AMERICAN RADIO SYSTEMS CORP /MA/
424B3, 1997-05-14
RADIO BROADCASTING STATIONS
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<PAGE>

                                                 Filed pursuant to Rule 424(b)3
                                                 Registration No. 333-26085
 

                               OFFER TO EXCHANGE
                                all outstanding
                11 3/8% CUMULATIVE EXCHANGEABLE PREFERRED STOCK
                                      for
           11 3/8% CUMULATIVE EXCHANGEABLE PREFERRED STOCK, SERIES B
 
                                     LOGO
 
  The Exchange Offer will expire at 5:00 p.m., New York City Time on June 23,
                             1997, unless extended
 
                                  -----------
 
American Radio Systems Corporation ("American" or the "Company"), hereby
offers, on the terms and subject to the conditions set forth in this
Prospectus and the accompanying Letter of Transmittal (the "Letter of
Transmittal"), to exchange one share of 11 3/8% Cumulative Exchangeable
Preferred Stock, Series B, $100 liquidation preference per share (the "New
Preferred Stock"), for each share of 11 3/8% Cumulative Exchangeable Preferred
Stock, $100 liquidation preference per share (the "Old Preferred Stock"), of
American (the "Exchange Offer"). The powers, preferences and relative rights
of the New Preferred Stock and the Old Preferred Stock are substantially
identical, except that the shares of New Preferred Stock have been registered
under the Securities Act of 1933, as amended (the "Securities Act"), and will
not bear any legends restricting their transfer. The Exchange Offer is being
made in order to satisfy certain contractual obligations of American. See "The
Exchange Offer" and "Description of the New Preferred Stock".
 
American will accept for exchange any and all shares of Old Preferred Stock
validly tendered and not withdrawn prior to 5:00 p.m., New York City time, on
June 23, 1997, unless the Exchange Offer is extended by American (as so
extended, the "Expiration Date"). Tenders of shares of Old Preferred Stock may
be withdrawn at any time prior to the Expiration Date. The Exchange Offer is
subject to certain customary conditions but is not conditioned upon any
minimum number of shares of Old Preferred Stock being tendered for exchange.
See "The Exchange Offer".
 
Each broker-dealer that receives shares of New Preferred Stock for its own
account pursuant to the Exchange Offer must acknowledge that it will deliver a
prospectus in connection with any resale of such shares of New Preferred
Stock. The Letter of Transmittal states that by so acknowledging and by
delivering a prospectus, a broker-dealer will not be deemed to admit that it
is an "underwriter" within the meaning of the Securities Act. This Prospectus,
as it may be amended or supplemented from time to time, may be used by a
broker-dealer in connection with resales of shares of New Preferred Stock
received in exchange for shares of Old Preferred Stock acquired by such
broker-dealer as a result of market-making activities or other trading
activities. American has agreed that it will make this Prospectus available to
any broker-dealer for use in connection with any such resale for a period of
180 days from the date of this Prospectus, or such shorter period as will
terminate when all Old Preferred Stock acquired by broker-dealers for their
own accounts as a result of market-making activities or other trading
activities have been exchanged for New Preferred Stock and resold by such
broker-dealers. See "Plan of Distribution".
 
Following the completion of the Exchange Offer, holders of shares of Old
Preferred Stock not tendered will not have any further registration rights and
such shares will continue to be subject to restrictions on transfer.
Accordingly, the liquidity of the market for a holder's shares of Old
Preferred Stock could be adversely affected if the holder does not participate
in the Exchange Offer.
 
FOR A DISCUSSION OF CERTAIN FACTORS THAT SHOULD BE CONSIDERED IN CONNECTION
WITH AN INVESTMENT IN THE SECURITIES OFFERED HEREBY, SEE "RISK FACTORS"
BEGINNING ON PAGE 14.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS
PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
 
                 The date of this Prospectus is May 13, 1997.
<PAGE>
 
                             AVAILABLE INFORMATION
 
  American has filed with the Securities and Exchange Commission (the
"Commission") a Registration Statement on Form S-4 under the Securities Act
with respect to the New Preferred Stock offered hereby. As permitted by the
rules and regulations of the Commission, this Prospectus omits certain
information, exhibits and undertakings contained in the Registration
Statement. American is subject to the informational requirements of the
Securities Exchange Act of 1934, as amended (the "Exchange Act"), and in
accordance therewith files reports and other information with the Commission.
For further information with respect to American and the New Preferred Stock
offered hereby, reference is made to the Registration Statement, including the
exhibits thereto and the financial statements, notes and schedules filed as a
part thereof, as well as the periodic reports and other information filed by
American with the Commission, all of which may be inspected and copied at the
public reference facilities of the SEC at Room 1024, Judiciary Plaza, 450
Fifth Street, N.W., Washington, D.C. 20549, and at the following Regional
Offices of the Commission: 500 West Madison Street, Suite 1400, Chicago,
Illinois 60661-2511 and Seven World Trade Center, 13th Floor, New York, New
York 10048. Copies of such material may also be obtained from the Public
Reference Section of the SEC at Judiciary Plaza, 450 Fifth Street, N.W.,
Washington, D.C. 20549, at prescribed rates. American's Class A Common Stock
is listed on the New York Stock Exchange ("NYSE") under the symbol "AFM", and
such reports, proxy statements and certain other information can also be
inspected at the office of the NYSE at 20 Broad Street, New York, New York
10005. The Commission maintains a web site that contains reports, proxy
information statements and other information regarding American; the address
of such site is http://www.sec.gov. Statements contained in this Prospectus as
to the contents of any contract or other document are not necessarily
complete, and in each instance reference is made to the copy of such contract
or other document filed as an exhibit to the Registration Statement, each such
statement being qualified in all respects by such reference.
 
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
  The following documents, which have been filed by American with the
Commission (File No. 0-26102), are incorporated herein by reference: (i)
Annual Report on Form 10-K for the year ended December 31, 1996 (the "American
10-K"), (ii) Current Reports on Form 8-K/A dated September 16, 1996, October
2, 1996 and April 17, 1997, (iii) Current Reports on Form 8-K dated January 3,
1997, January 22, 1997, February 10, 1997, February 18, 1997, March 18, 1997,
March 24, 1997 and April 18, 1997 and (iv) Schedule 14A dated April 21, 1997.
All documents filed by American pursuant to Section 13(a), 13(c), 14 or 15(d)
of the Exchange Act subsequent to the date of this Prospectus and prior to the
termination of the offering made hereby shall be deemed to be incorporated by
reference into this Prospectus and to be a part hereof from the date any such
document is filed.
 
  The following documents, which have been filed by EZ Communications, Inc.
with the Commission (File No. 0-16265), are incorporated herein by reference:
(i) Annual Report on Form 10-K for the year ended December 31, 1996 (the "EZ
10-K").
 
  THIS PROSPECTUS INCORPORATES DOCUMENTS BY REFERENCE WHICH ARE NOT PRESENTED
HEREIN OR DELIVERED HEREWITH. THESE DOCUMENTS ARE AVAILABLE UPON REQUEST FROM
BRUCE G. DANZIGER, DIRECTOR OF INVESTOR RELATIONS, AMERICAN RADIO SYSTEMS
CORPORATION, 116 HUNTINGTON AVENUE, BOSTON, MASSACHUSETTS 02116, TELEPHONE
NUMBER (617) 375-7500. IN ORDER TO ENSURE TIMELY DELIVERY OF THE DOCUMENTS,
ANY REQUEST SHOULD BE MADE BY JUNE 23, 1997.
 
                                       i
<PAGE>
 
  The term "American Probable Transactions" means the acquisitions and
dispositions of radio stations described under "Business--Recent Transactions".
It does not, however, include those referred to under "Business--Recent
Transactions--Other Transactions" and "--Tower Subsidiary (other than the
Meridian Transaction)" because those are not, at this time, considered
"probable" within the meaning of the applicable SEC accounting rules.
 
                                    SUMMARY
 
  The following is a summary of certain information contained in this
Prospectus. This summary is not intended to be complete and is qualified in its
entirety by reference to the more detailed information set forth elsewhere in
this Prospectus.
 
                                    AMERICAN
 
  American is a national radio broadcasting company committed to acquiring,
developing and operating leading clusters of complementary radio stations in
major and growing advertising markets. American will be among the five largest
radio groups in the nation owning and/or operating 95 radio stations in 20
markets across the United States upon consummation of the American Probable
Transactions. Consistent with its strategy of operating in the top 60 markets
(with an emphasis on markets ranked 10 through 50), American will, upon such
consummation, own stations in the following markets: Boston, Seattle, St.
Louis, Baltimore, Cincinnati, Portland, Pittsburgh, Sacramento, Charlotte,
Kansas City, Hartford, Austin, Buffalo, Las Vegas, San Jose, West Palm Beach,
Rochester, Dayton, Fresno and Riverside/San Bernardino. Giving effect to the
American Probable Transactions, American station groups ranked first or second
among station operators in radio advertising revenues in 18 of its 20 markets
based on the 1997 edition of Duncan's Radio Market Guide (the "Duncan Guide").*
 
  As a key part of the Company's acquisition strategy, on April 4, 1997, EZ
Communications, Inc. ("EZ") was merged into American (the "EZ Merger").
Pursuant to the EZ Merger (excluding the consummation of the prospective EZ
transactions which are included in American Probable Transactions), American
acquired 18 FM and six AM stations in eight markets, assumed approximately
$222.4 million of long-term debt, paid approximately $108.9 million in cash and
issued approximately 8.3 million shares of Class A Common Stock to the EZ
stockholders.
 
  In July 1995, the Company organized American Tower Systems, Inc. (the "Tower
Subsidiary" or "Tower") for the purpose of acquiring, developing and operating
communications towers throughout the United States, principally for other radio
and telecommunications companies.
 
  American's stations have demonstrated significant same station growth in net
revenues and broadcast cash flow. Growth in net revenues and, to a greater
extent, broadcast cash flow from such same stations is affected by a number of
factors, among the most significant of which are the number of stations
acquired in a particular period, the stage of development of the acquired
stations and the period of time such stations have been operated by American.
Net revenues and broadcast cash flow from stations owned and/or operated by
American as of December 31, 1996 (including for periods prior to their
acquisition by American) increased by 12.1% and 20.7%, respectively, from 1995
to 1996. Giving effect to the American Probable Transactions as though all of
them had been consummated at January 1, 1996, net revenues and broadcast cash
flow in 1996 would have been approximately $360.9 million and $120.7 million,
respectively. See "Summary--Selected Combined Financial Data" and "Unaudited
Pro Forma Condensed Consolidated Financial Statements of American".
 
  Management believes that American's substantial same station growth is a
result of a number of factors that include the following:
 
- --------
* The Duncan Guide is published by a company partially owned by James H.
Duncan, Jr., a director of American.
 
                                       1
<PAGE>
 
 
  .   Market Selection. American has targeted markets that offer geographic
      diversity and fast growing economic bases. Five of American's markets are
      among the ten fastest growing U.S. markets and eight are among the top
      25, as identified by the U.S. Department of Commerce, Bureau of Economic
      Analysis, "Projection of Economic Growth", as of May 1996.
 
  .   Station Groups. American operates at least three FMs in each market
      (other than Austin, Cincinnati, Kansas City and Riverside/San Bernardino)
      and in most markets has developed radio station groups with many
      complementary FM and AM stations. These groups are generally composed of
      a mixture of leading and underperforming stations. Management believes
      this configuration enables American to accelerate the growth potential of
      these station groups, while reducing the risks associated with launching
      new formats and undertaking other means of improving underperforming
      radio properties. Management estimates that approximately one quarter of
      its stations, assuming consummation of the American Probable
      Transactions, have negligible or negative broadcast cash flow. American
      seeks to improve the performance of these stations by leveraging the
      enhanced management, programming, promotional and operational resources
      available to multiple station groups.
 
      American also believes that the operation of station clusters may: (i)
      enhance net revenue growth by increasing the appeal of the stations to
      advertisers and enabling such stations to compete more effectively with
      other advertising media; (ii) achieve operating efficiencies by
      consolidating broadcast facilities, eliminating duplicative management
      and staff functions and reducing overhead; (iii) enhance the
      competitiveness of American in bidding for top quality talent; (iv)
      facilitate cross promotion, sponsorship of larger events and increased
      spending on television, outdoor and other advertising designed to
      establish "brand" identity for the station cluster; (v) support more
      extensive and specialized market research; and (vi) promote the
      development of enhanced client services for advertisers.
 
  .   Station Operating Strategies. American views itself as a product oriented
      company that seeks to establish and maintain listener loyalty through
      sound audience research, employment of high profile personalities, strong
      production values, and tailored marketing approaches that vary according
      to market, format and individual station need. American also seeks to
      assemble a large group of stations in each market, enabling it to attract
      a broad range of demographic audiences and to respond to differing needs
      of individual advertisers. Through these and other strategies American
      seeks to increase its share of total advertising dollars, targeting in
      particular its two most direct competitors, newspapers and broadcast
      television. These strategies have enabled American to build station
      groups with leading revenue and audience market share.
 
  .   Diversified Programming. American's programming diversification has
      helped to insulate it from changes in listening preferences. American
      currently programs 18 different formats at its stations, a substantial
      increase from the six formats programmed in January 1994.
 
  .   Management Structure. In order to manage a national group of radio
      stations and to provide a strong operational focus to each market,
      American has divided its markets into three groups, with a highly
      experienced Co-Chief Operating Officer responsible for each. While the
      management structures in each market vary according to the number of
      stations, their stage of development, and other factors, in most markets
      overall responsibility for the market is assigned to a single individual
      market leader. American believes this structure facilitates the
      coordination of programming and selling and reduction of operating
      expenses, while maintaining accountability for individual station
      performance. Individual market leaders each report to a Co-Chief
      Operating Officer, who in turn report to Steven B. Dodge, Chairman and
      Chief Executive Officer.
 
                                       2
<PAGE>
 
 
  The following table sets forth certain information regarding American and its
markets, assuming all of the American Probable Transactions had been
consummated as of January 1, 1996. For important information regarding the
stations set forth below, including the source and calculation of "Market
Ranking by Revenue" and "Market Revenue Rank", see the table under "Business--
Operations".
<TABLE>
<CAPTION>
                                                                     NUMBER
                                                  MARKET   MARKET  OF STATIONS
                                                RANKING BY REVENUE -----------
                                                 REVENUE    RANK    FM    AM
                                                ---------- ------- ----- -----
<S>                                             <C>        <C>     <C>   <C>
Boston.........................................      9         2       3     3
Seattle........................................     13         2       4     1
St. Louis......................................     18         1       3     1
Cincinnati.....................................     20         2       2    --
Baltimore......................................     21         1       3     2
Portland.......................................     22         1       5     1
Pittsburgh.....................................     24         2       3    --
Sacramento.....................................     25         1       5     3
Charlotte......................................     27         1       5     2
Kansas City....................................     29         3       2     1
Hartford.......................................     35         1       3     1
Austin.........................................     37         4       2     1
Las Vegas......................................     39         2       4     2
Buffalo........................................     42         2       4     1
San Jose.......................................     43         1       5    --
West Palm Beach................................     49         2       4    --
Rochester......................................     53         1       4    --
Dayton.........................................     58         1       5     1
Fresno.........................................     62         1       5     2
Riverside/San Bernardino.......................     64         1       2    --
</TABLE>
 
  American was incorporated under the laws of the State of Delaware in 1993.
American's principal offices are located at 116 Huntington Avenue, Boston,
Massachusetts 02116, and its telephone number is (617) 375-7500.
 
 
                                       3
<PAGE>
 
                               THE EXCHANGE OFFER
 
The Exchange Offer....  One share of New Preferred Stock in exchange for
                        each outstanding share of Old Preferred Stock. As
                        of the date hereof, 2,047,391 shares of Old
                        Preferred Stock are issued and outstanding. The New
                        Preferred Stock offered hereby is identical in all
                        material respects to the Old Preferred Stock,
                        except that shares of New Preferred Stock will be
                        freely transferable by the holders thereof except
                        as otherwise provided herein. See "Description of
                        the New Preferred Stock".
 
                        Based on an interpretation by the Commission's
                        staff set forth in no-action letters issued to
                        third parties unrelated to it, American believes
                        that the shares of New Preferred Stock issued
                        pursuant to the Exchange Offer in exchange for Old
                        Preferred Stock may be offered for sale, sold and
                        otherwise transferred by any person receiving the
                        New Preferred Stock, whether or not that person is
                        the registered holder (other than any such holder
                        or such other person that is an "affiliate" of
                        American within the meaning of Rule 405 under the
                        Securities Act), without compliance with the
                        registration and prospectus delivery provisions of
                        the Securities Act, provided that (i) the shares of
                        New Preferred Stock are acquired in the ordinary
                        course of business of that holder or such other
                        person, (ii) neither the holder nor such other
                        person is engaging in or intends to engage in a
                        distribution of the New Preferred Stock, and (iii)
                        neither the holder nor such other person has an
                        arrangement or understanding with any person to
                        participate in the distribution of the New
                        Preferred Stock. See "The Exchange Offer--Purpose
                        and Effect". Each broker-dealer that receives
                        shares of New Preferred Stock for its own account
                        in exchange for shares of Old Preferred Stock,
                        where those shares of Old Preferred Stock were
                        acquired by the broker-dealer as a result of its
                        market-making activities or other trading
                        activities, must acknowledge that it will deliver a
                        prospectus in connection with any resale of such
                        shares of New Preferred Stock. See "Plan of
                        Distribution".
 
Registration Rights
 Agreement............  The shares of Old Preferred Stock were sold by
                        American on January 30, 1997, in a private
                        placement in reliance on Section 4(2) of the
                        Securities Act and immediately resold by the
                        initial purchasers thereof to certain qualified
                        institutional buyers in reliance on Rule 144A under
                        the Securities Act and to a limited number of
                        institutional "accredited investors" (as defined in
                        Rule 501(A)(1), (2), (3) or (7) under the
                        Securities Act) (the "Original Offering"). In
                        connection with the sale, American entered into a
                        Registration Rights Agreement with the initial
                        purchasers of the Old Preferred Stock (the
                        "Registration Rights Agreement") requiring American
                        to make the Exchange Offer. The Registration Rights
                        Agreement further provides that American must use
                        its best efforts to (i) cause the Registration
                        Statement with respect to the Exchange Offer to be
                        declared effective on or before July 29, 1997 and
                        (ii) consummate the Exchange Offer on or before
                        September 12, 1997. See "The Exchange Offer--
                        Purpose and Effect".
 
Expiration Date.......  The Exchange Offer will expire at 5:00 p.m., New
                        York City time, June 23, 1997, or such later date
                        and time to which it is extended by American.
 
Withdrawal............  The tender of shares of Old Preferred Stock
                        pursuant to the Exchange Offer may be withdrawn at
                        any time prior to 5:00 p.m., New York City time, on
                        the Expiration Date. Any shares of Old Preferred
                        Stock not accepted for exchange for any reason will
                        be returned without expense to the tendering holder
                        thereof as promptly as practicable after the
                        expiration or termination of the Exchange Offer.
 
                                       4
<PAGE>
 
 
Dividends on the New
 Preferred Stock and
 Old Preferred
 Stock................
                        Dividends on each share of New Preferred Stock will
                        accrue from the last dividend payment (or deemed
                        dividend payment) on the Old Preferred Stock. No
                        additional dividends will be paid on Old Preferred
                        Stock tendered and accepted for exchange.
 
Conditions to the
 Exchange Offer.......  The Exchange Offer is subject to certain customary
                        conditions, certain of which may be waived by
                        American. It is not, however, conditioned on any
                        minimum number of shares of Old Preferred Stock
                        being tendered for exchange. See "The Exchange
                        Offer--Conditions to the Exchange Offer."
 
Termination...........  American may terminate the Exchange Offer if it
                        determines that its ability to proceed with the
                        Exchange Offer could be materially impaired due to
                        any legal or governmental action, any new law,
                        statute, rule or regulation or any interpretation
                        by the staff of the Commission of any existing law,
                        statute, rule or regulation. Holders of Old
                        Preferred Stock will have certain rights against
                        American under the Registration Rights Agreement
                        should American fail to consummate the Exchange
                        Offer. No federal or state regulatory requirements
                        must be complied with or approvals obtained in
                        connection with the Exchange Offer, other than
                        applicable requirements under federal and state
                        securities laws.
 
Procedures for
 Tendering Old          Each holder of shares of Old Preferred Stock
 Preferred Stock......  wishing to accept the Exchange Offer must complete,
                        sign and date the Letter of Transmittal, or a copy
                        thereof, in accordance with the instructions
                        contained herein and therein, and mail or otherwise
                        deliver the Letter of Transmittal, or copy thereof,
                        together with certificates representing the shares
                        of Old Preferred Stock and any other required
                        documentation, to the Exchange Agent at the address
                        set forth herein. Persons holding shares of Old
                        Preferred Stock through the Depository Trust
                        Company ("DTC") and wishing to accept the Exchange
                        Offer must do so pursuant to the DTC's Automated
                        Tender Offer Program, by which each tendering
                        participant will agree to be bound by the Letter of
                        Transmittal. By executing or agreeing to be bound
                        by the Letter of Transmittal, each holder will
                        represent to American that, among other things, (i)
                        the shares of New Preferred Stock acquired pursuant
                        to the Exchange Offer are being obtained in the
                        ordinary course of business of the person receiving
                        such New Preferred Stock, whether or not such
                        person is the registered holder of the Old
                        Preferred Stock, (ii) neither the holder nor any
                        such other person is engaging in or intends to
                        engage in a distribution of such New Preferred
                        Stock, (iii) has an arrangement or understanding
                        with any person to participate in the distribution
                        of such New Preferred Stock, and (iv) neither the
                        holder nor any such other person is an "affiliate",
                        as defined under Rule 405 promulgated under the
                        Securities Act, of American. Pursuant to the
                        Registration Rights Agreement, American is required
                        to file a "shelf" registration statement for a
                        continuous offering pursuant to Rule 415 under the
                        Securities Act in respect of the Old Preferred
                        Stock if (i) because of any change in law or in
                        currently prevailing interpretations of the staff
                        of the Commission, American is not permitted to
                        effect the Exchange Offer, (ii) the Exchange Offer
                        is not consummated within 225 days of the Original
                        Offering, (iii) the holders of
 
                                       5
<PAGE>
 
                        not less than a majority of shares of the Old
                        Preferred Stock determine that the interests of the
                        holders would be adversely affected by consummation
                        of the Exchange Offer, or (iv) any holder of Old
                        Preferred Stock participates in the Exchange Offer
                        and does not receive freely transferrable shares of
                        New Preferred Stock in exchange for Old Preferred
                        Stock (other than as a result of the status of such
                        holder as an "affiliate" of American within the
                        meaning of the Securities Act). See "The Exchange
                        Offer--Purpose and Effect".
 
Acceptance of Old
 Preferred Stock and
 Delivery of New
 Preferred Stock......
                        The Company will accept for exchange any and all
                        shares of Old Preferred Stock which are properly
                        tendered (and not withdrawn) in the Exchange Offer
                        prior to 5:00 p.m., New York City time, on the
                        Expiration Date. The New Preferred Stock issued
                        pursuant to the Exchange Offer will be delivered
                        promptly following the Expiration Date. See "The
                        Exchange Offer--Terms of the Exchange Offer".
 
Exchange Agent........  Harris Trust Company of New York is serving as
                        Exchange Agent (the "Exchange Agent") in connection
                        with the Exchange Offer.
 
Federal Income Tax
 Consequences.........  The exchange pursuant to the Exchange Offer should
                        not be a taxable event for federal income tax
                        purposes. See "Certain Federal Income Tax
                        Consequences".
 
Effect of Not           Shares of Old Preferred Stock that are not tendered
 Tendering............  or that are tendered but not accepted will,
                        following the completion of the Exchange Offer,
                        continue to be subject to the existing restrictions
                        upon transfer thereof. American will have no
                        further obligation to provide for the registration
                        under the Securities Act of such shares of Old
                        Preferred Stock.
 
    SUMMARY OF THE TERMS OF THE NEW PREFERRED STOCK AND EXCHANGE DEBENTURES
 
                              NEW PREFERRED STOCK
 
Securities Offered....  3,600,000 shares of 11 3/8% Cumulative Exchangeable
                        Preferred Stock, Series B, $100 liquidation
                        preference per share.
 
Dividends.............  Cumulative from the last dividend payment (or
                        deemed dividend payment) of the Old Preferred Stock
                        at the annual rate of 11 3/8% of the liquidation
                        preference per share of the New Preferred Stock,
                        payable quarterly on January 15, April 15, July 15
                        and October 15 of each year, commencing July 15,
                        1997, out of funds legally available therefor,
                        when, as and if declared by the Board of Directors
                        of American. American may, at its option, pay
                        dividends on any dividend payment date occurring on
                        or before January 15, 2002 either in cash or in
                        additional shares of New Preferred Stock (or, at
                        American's option, cash in lieu of fractional
                        shares).
 
Liquidation             $100 per share, plus accumulated and unpaid
 Preference...........  dividends.
 
Optional Redemption...  The New Preferred Stock is redeemable for cash at
                        any time after January 15, 2002, at the option of
                        American, in whole or in part, at a redemption
                        price initially of 105.688% of the liquidation
                        preference, declining ratably immediately after
                        January 15 of each year thereafter to a redemption
                        price of
 
                                       6
<PAGE>
 
                        100% of the liquidation preference, after January
                        15, 2007, plus in each case, without duplication,
                        accumulated and unpaid dividends. In addition,
                        prior to January 15, 2000, American may, at its
                        option, use the net proceeds of one or more Public
                        or Rule 144A Equity Offerings to redeem up to 35%
                        of the outstanding New Preferred Stock at 111.375%
                        of the liquidation preference, plus, without
                        duplication, accumulated and unpaid dividends to
                        the date of redemption; provided, however, that,
                        after any such redemption, there must be at least
                        $130.0 million aggregate liquidation preference of
                        New Preferred Stock outstanding.
 
Mandatory               American is required, subject to certain
 Redemption...........  conditions, to redeem all of the New Preferred
                        Stock outstanding on January 15, 2009 at a
                        redemption price equal to the liquidation
                        preference, plus, without duplication, accumulated
                        and unpaid dividends to the date of redemption.
 
Change of Control.....  Under certain circumstances involving a Change of
                        Control, American is required to offer to purchase
                        each share of New Preferred Stock at a purchase
                        price equal to the 101% of the liquidation
                        preference thereof, plus, without duplication,
                        accumulated and unpaid dividends. There can be no
                        assurance that American will have sufficient funds
                        to purchase all of the New Preferred Stock in the
                        event of a Change of Control or that it would be
                        able to obtain financing for such purpose on
                        favorable terms, if at all. American's debt
                        instruments also contain provisions relating to a
                        change of control which require repayment of such
                        debt in the event of a change of control as defined
                        therein.
 
Ranking...............  The New Preferred Stock will rank, with respect to
                        dividends and upon liquidation, dissolution or
                        winding up of American, senior to all classes of
                        American's Common Stock and junior to any other
                        series of Preferred Stock that may hereafter be
                        created that states it ranks senior to the New
                        Preferred Stock. The New Preferred Stock will rank
                        pari passu with any Old Preferred Stock which is
                        not exchanged and the 137,500 shares of 7%
                        Convertible Exchangeable Preferred Stock, $1,000
                        liquidation preference per share, issued in June
                        1996 (the "Convertible Preferred Stock").
 
Voting Rights.........  Except as required by law or with respect to an
                        amendment of the Restated Certificate of
                        Incorporation of American, as amended (the
                        "Restated Certificate") adversely affecting the
                        rights of the New Preferred Stock, the holders of
                        the New Preferred Stock will not be entitled to any
                        voting rights except as follows: (i) amending
                        certain rights of the holders of the New Preferred
                        Stock or (ii) with respect to the creation,
                        authorization or issuance of capital stock ranking
                        senior (in certain respects) to the New Preferred
                        Stock. In addition, if (i) the equivalent of six
                        quarterly dividends payable on the New Preferred
                        Stock are in arrears, (ii) American fails to make a
                        mandatory redemption or an Offer to Purchase
                        following a Change of Control, or (iii) American
                        fails to comply with certain covenants in the New
                        Preferred Stock or to make certain payments on its
                        Indebtedness, the number of directors of American
                        will be increased by two and the holders of the New
                        Preferred Stock, voting separately as a class with
                        the holders of shares of any other series of parity
                        Preferred Stock upon which like voting rights have
                        been conferred and are exercisable, will be
                        entitled to elect two directors, who shall serve
                        until such time as, in the case of a dividend
                        default, all dividends in arrears have been paid or
                        declared and set apart for payment, and, in all
                        other cases, any failure, breach or default giving
                        rise to such voting rights is
 
                                       7
<PAGE>
 
                        remedied or waived by the holders of not less than
                        a majority of the shares of New Preferred Stock
                        then outstanding.
 
Certain Restrictive     The holders of shares of New Preferred Stock will
 Covenants............  be entitled to the benefit of certain restrictive
                        provisions that, among other things, will limit the
                        ability of American and its Restricted Subsidiaries
                        to incur additional Indebtedness, pay dividends or
                        make certain other Restricted Payments, or merge or
                        consolidate with or sell all or substantially all
                        of their assets to any other person and will limit
                        the ability of Restricted Subsidiaries to issue
                        equity interests.
 
Senior Debt             American's debt instruments contain provisions
 Restrictions.........  which restrict, and if a default under any thereof
                        exists prohibit, redemption or repurchase of the
                        New Preferred Stock, including upon a Change of
                        Control or through the issue of Exchange
                        Debentures, and the payment of cash dividends on
                        the New Preferred Stock. See "Risk Factors--Factors
                        Relating to American and its Business--Restrictions
                        Imposed by Terms of Indebtedness" and "Description
                        of Capital Stock--Dividend Restrictions" and
                        "Indebtedness of American".
 
Exchange Debentures...  The New Preferred Stock will be exchangeable,
                        subject to certain conditions, at the option of
                        American, in whole but not in part, on any dividend
                        payment date commencing July 15, 1997, for
                        American's 11 3/8% Subordinated Exchange Debentures
                        due 2009 (the "Exchange Debentures") in an
                        aggregate principal amount equal to the liquidation
                        preference, plus, without duplication, accumulated
                        and unpaid dividends to the date of exchange.
 
Federal Income Tax
 Consequences.........  There are certain federal income tax consequences
                        associated with the purchasing, holding and
                        disposing of the New Preferred Stock (or the
                        Exchange Debentures), including the fact that a
                        redemption of shares of the New Preferred Stock for
                        cash or an exchange of the New Preferred Stock for
                        Exchange Debentures will be a taxable transaction
                        and that any Exchange Debentures may be issued with
                        original issue discount resulting in income without
                        a cash distribution. See "Certain Federal Income
                        Tax Consequences".
 
                            THE EXCHANGE DEBENTURES
 
Issue.................  11 3/8% Subordinated Exchange Debentures due 2009
                        issuable in exchange for the New Preferred Stock in
                        an aggregate principal amount equal to the
                        liquidation preference of the New Preferred Stock,
                        plus, without duplication, accrued and unpaid
                        dividends to the date fixed for the exchange
                        thereof (the "Exchange Date"), plus any additional
                        Exchange Debentures issued in lieu of cash
                        interest.
 
Maturity..............  January 15, 2009.
 
Interest Rate and
 Payment Dates........  The Exchange Debentures will bear interest at a
                        rate of 11 3/8% per annum. Interest will accrue
                        from the date of issuance or from the most recent
                        interest payment date to which interest has been
                        paid or provided for or, if no interest has been
                        paid or provided for, from the Exchange Date.
                        Interest will be payable semi-annually in cash (or,
                        at the option of American, on or prior to
 
                                       8
<PAGE>
 
                        January 15, 2002, in additional Exchange
                        Debentures) in arrears on each January 15 and July
                        15, commencing with the first such date after the
                        Exchange Date.
 
Optional Redemption...  The Exchange Debentures are redeemable, at the
                        option of American, in whole or in part, at any
                        time on or after January 15, 2002 at the redemption
                        prices set forth herein, plus accrued and unpaid
                        interest to the date of redemption. In addition,
                        prior to January 15, 2000, American may, at its
                        option, redeem up to 35% of the outstanding
                        Exchange Debentures from the net cash proceeds of a
                        Public or Rule 144A Equity Offering at 111.375% of
                        their principal amount, plus accrued and unpaid
                        interest to the date of redemption; provided,
                        however, that after any such redemption, the
                        aggregate principal amount of the Exchange
                        Debentures outstanding must equal at least $130.0
                        million.
 
Ranking...............  The Exchange Debentures will be subordinated to all
                        existing and future Senior Debt of American. In
                        addition, the Exchange Debentures will be
                        effectively subordinated to all existing and future
                        Indebtedness of American's subsidiaries (including
                        guarantees of American's Indebtedness). The
                        Exchange Debentures will rank pari passu or senior
                        to any class or series of Indebtedness that
                        expressly provides that it ranks pari passu or
                        subordinate to the Exchange Debentures, as the case
                        may be. After giving effect to the American
                        Probable Transactions, the financing thereof, the
                        Original Offering and, in each case, the use of the
                        proceeds therefrom, as though each had occurred on
                        December 31, 1996, there would have been
                        approximately $690.7 million of Senior Debt
                        outstanding. The debentures issuable upon exchange
                        of the Convertible Preferred Stock will be Senior
                        Debt unless American otherwise designates prior to
                        their issuance.
 
Change of Control.....  In the event of a Change of Control, American will,
                        subject to certain conditions, be required to offer
                        to purchase all outstanding Exchange Debentures at
                        a purchase price equal to 101% of the principal
                        amount thereof, plus accrued and unpaid interest to
                        the date of purchase. There can be no assurance
                        that American will have sufficient funds to
                        purchase all the Exchange Debentures in the event
                        of a Change of Control or that American would be
                        able to obtain financing for such purpose on
                        favorable terms, if at all. American's debt
                        instruments also contain provisions relating to a
                        change of control which require repayment of such
                        debt in the event of a change of control as defined
                        herein.
 
Certain Restrictive     The Exchange Indenture will contain certain
 Covenants............  restrictive covenants, including limitations on (i)
                        the incurrence of indebtedness and issuance of
                        preferred stock by the Company and the Restricted
                        Subsidiaries; (ii) the payment of dividends and the
                        making of restricted payments; (iii) transactions
                        with affiliates; (iv) the existence of liens; (v)
                        the disposition of proceeds of asset sales; (vi)
                        Asset Swaps; (vii) the making of guarantees by the
                        Company and the Restricted Subsidiaries; (viii)
                        transfers and issuances of stock of the Restricted
                        Subsidiaries; (ix) the imposition of restrictions
                        on certain payments by the Restricted Subsidiaries;
                        (x) investments in Unrestricted Subsidiaries; and
                        (xi) certain mergers and sales of assets. See
                        "Description of the Exchange Debentures--Certain
                        Covenants" and "--Limitation on Merger,
                        Consolidation and Sale of Assets".
 
                                       9
<PAGE>
 
 
Senior Debt             American's debt instruments contain provisions
 Restrictions.........  which restrict, and if a default under any thereof
                        exists prohibit, redemption or repurchase of the
                        Exchange Debentures, including upon a Change of
                        Control. See "Risk Factors--Factors Relating to
                        American and its Business--Restrictions Imposed by
                        Terms of Indebtedness" and "Indebtedness of
                        American".
 
                                USE OF PROCEEDS
 
  There will be no cash proceeds to American from the exchange pursuant to the
Exchange Offer.
 
  The net proceeds from the Old Preferred Offering were used initially to repay
indebtedness under the Credit Agreements and, thereafter, to finance American's
acquisition program. See "Use of Proceeds".
 
                                  RISK FACTORS
 
  An investment in the New Preferred Stock involves certain risks that a
prospective investor should carefully consider. See "Risk Factors".
 
                                       10
<PAGE>
 
                        SELECTED COMBINED FINANCIAL DATA
 
  The following Selected Combined Financial Data has been derived from the
consolidated financial statements of American and the Selected Financial Data
of the predecessor entities of American (Stoner, Atlantic, Multi Market and
Boston AM (the "American Predecessor Entities")), which are contained in the
American 10-K for the year ended December 31, 1996 which has been filed with
the Commission pursuant to the Exchange Act and which is incorporated herein by
reference. The Selected Combined Financial Data should be read in conjunction
with American's financial statements and the notes thereto and with
"Management's Discussion and Analysis of Financial Condition and Results of
Operations". The following financial information presents the combined
operating results of the American Predecessor Entities for periods prior to the
date of the formation of American (the "American Reorganization") (November 1,
1993) for 1992 and the ten months ended October 31, 1993 as if such entities
had combined effective January 1, 1992 or, if later, the date of commencement
of operations of certain American Predecessor Entities. The information for the
two months ended December 31, 1993 and the years ended December 31, 1994, 1995
and 1996 is based on the historical American consolidated financial statements.
The pro forma financial information with respect to the year ended December 31,
1996 included below reflects certain adjustments, as explained elsewhere in
this Prospectus, and therefore any comparison of the pro forma 1996 financial
information with the Selected Combined Financial Data appearing below and
elsewhere in this Prospectus for periods prior to 1996 is inappropriate. Such
pro forma financial information gives effect, among other things, to the
American Pro Forma Transactions (which term means the EZ Merger (excluding the
prospective EZ transactions which were not then consummated and are included in
the American Probable Transactions), the Hartford Transaction, the HBC Merger
(excluding the Omaha stations which are under an agreement to be sold), the
BayCom Transaction and the Baltimore Transaction. The American Pro Forma
Transactions do not include all of the American Probable Transactions, or the
transactions referred to under "Business--Recent Transactions--Other
Transactions". See "Management's Discussion and Analysis of Financial Condition
and Results of Operations" in the American 10-K and the financial statements of
EZ in the EZ 10-K, all of which are incorporated herein by reference.
 
                                       11
<PAGE>
 
 
                       AMERICAN RADIO SYSTEMS CORPORATION
<TABLE>
<CAPTION>
                                                        COMBINED PREDECESSOR
                    COMBINED PREDECESSOR                    ENTITIES AND
                        ENTITIES(1)        AMERICAN(1)      AMERICAN(1)                      AMERICAN
                  ------------------------ ------------ -------------------- ------------------------------------
                                                                                      YEAR ENDED DECEMBER 31,
                                                                             ------------------------------------
                               TEN MONTHS   TWO MONTHS                                                     PRO
                   YEAR ENDED     ENDED       ENDED     COMBINED YEAR ENDED         HISTORICAL            FORMA
                  DECEMBER 31, OCTOBER 31, DECEMBER 31,     DECEMBER 31,     --------------------------  --------
                    1992(2)       1993         1993           1993(1)        1994(2)  1995(2)  1996(2)   1996(3)
                  ------------ ----------- ------------ -------------------- -------  -------  --------  --------
                                                             (IN THOUSANDS)
<S>               <C>          <C>         <C>          <C>                  <C>      <C>      <C>       <C>       
STATEMENT OF
 OPERATIONS
 DATA(2):
Net revenues....    $46,306      $45,010      $8,943          $53,953        $68,034  $97,772  $178,019  $319,512
Operating
 expenses.......     36,698       37,058       6,493           43,551         50,129   66,448   120,004   211,602
Net LMA
 expenses(4)....        --           --          --               --             --       600     8,128     8,128
Depreciation and
 amortization...      4,465        5,900       1,415            7,315          9,920   12,364    17,810    60,405
Corporate
 general and
 administrative
 expenses.......      3,657        2,897         944            3,841          2,229    3,908     5,046     6,046
                    -------      -------      ------          -------        -------  -------  --------  --------
Operating income
 (loss).........      1,486         (845)         91             (754)         5,756   14,452    27,031    33,331
Net interest
 expense........     (4,370)      (5,517)       (801)          (6,318)        (7,051) (10,062)  (16,762)  (42,196)
Gains (losses)
 on sale of
 assets, net....       (964)       3,133         --             3,133          2,345   11,544      (308)     (308)
Other non-
 operating
 income
 (expense),
 net............         (3)          42         --                42           (568)     --        --        --
                    -------      -------      ------          -------        -------  -------  --------  --------
Income (loss)
 before income
 taxes and other
 items(3).......     (3,851)      (3,187)       (710)          (3,897)           482   15,934     9,961    (9,173)
Provision
 (benefit) for
 income
 taxes(5).......        382        1,690        (263)           1,427            556    6,829     4,826    (2,373)
                    -------      -------      ------          -------        -------  -------  --------  --------
Income (loss)
 before
 extraordinary
 item...........    $(4,233)     $(4,877)     $ (447)         $(5,324)           (74)   9,105     5,135    (6,800)
                    =======      =======      ======          =======
Extraordinary
 losses.........                                                              (1,159)    (817)      --        --
                                                                             -------  -------  --------  --------
Net income
 (loss).........                                                              (1,233)   8,288     5,135    (6,800)
Preferred stock
 and Series C
 Common Stock
 dividends......                                                              (1,887)    (815)   (4,973)  (27,723)
                                                                             -------  -------  --------  --------
Net income
 (loss)
 applicable to
 common
 stockholders...                                                             $(3,120) $ 7,473  $    162  $(34,523)
                                                                             =======  =======  ========  ========
OTHER FINANCIAL
 DATA:
Broadcast cash
 flow(6)........    $ 9,608      $ 7,952      $2,450          $10,402        $17,905  $31,324  $ 58,015  $107,910
EBITDA(6).......      5,951        5,055       1,506            6,561         15,676   27,416    52,969   101,864
After-tax cash
 flow(6)........        --           --          --               --           7,959   20,654    17,972    25,882
Ratio of
 earnings to
 fixed charges
 and preferred
 stock
 dividends(7)...        --           --          --               --             --     2.09x     1.17x       --
Ratio of total
 debt to
 EBITDA.........                                                                                   6.24x     5.13x
Ratio of EBITDA
 to net interest
 expense and
 preferred stock
 dividends......                                                                                   2.44x     1.46x
</TABLE>
 
<TABLE>
<CAPTION>
                                                          DECEMBER 31, 1996
                                                       -----------------------
                                                       HISTORICAL PRO FORMA(3)
                                                       ---------- ------------
                                                           (IN THOUSANDS)
<S>                                                    <C>        <C>
BALANCE SHEET DATA:
Cash and cash equivalents.............................  $ 10,447   $  13,500
Working capital, excluding current portion of long-
 term debt............................................    35,547      50,251
Intangible assets, net................................   493,260   1,234,258
Total assets..........................................   796,303   1,615,931
Long-term debt, including current portion.............   330,672     522,594
Cumulative Exchangeable Preferred Stock...............       --      200,000
Stockholders' equity..................................   396,163     711,875
</TABLE>
 
                                       12
<PAGE>
 
- --------
(1) The information for the Combined American Predecessor Entities includes the
    results of operations of the following entities for the following periods:
    Stoner and Atlantic--the year ended December 31, 1992 and ten months ended
    October 31, 1993; Multi Market--the fiscal year ended August 31, 1992
    (included in calendar year 1992) and the sum of (a) eight-twelfths of the
    fiscal year ended August 31, 1993 and (b) the historical results for the
    two months ended October 31, 1993 (included in the ten months ended October
    31, 1993); and Boston AM--the one-month period ended December 31, 1992 (in
    calendar year 1992) and the ten months ended October 31, 1993 (in that
    period). In addition, the 1993 financial information combines the American
    Predecessor Entities for the ten months ended October 31, 1993 and
    historical American financial statements for the two month period ended
    December 31, 1993.
(2) Year-to-year comparisons are significantly affected by the timing of
    acquisitions and dispositions of radio stations, which have been numerous
    during the periods shown. See "Business--Recent Transactions" and
    "Management's Discussion and Analysis of the Financial Condition and
    Results of Operations" in the American 10-K for a description of the
    acquisitions and dispositions made in 1994, 1995 and 1996.
(3) The unaudited pro forma Statement of Operations Data and Other Financial
    Data for the year ended December 31, 1996 give effect to (i) the American
    Pro Forma Transactions and (ii) the offering of the Old Preferred Stock
    (the "Original Offering") and the use of the proceeds thereof and the
    Exchange Offer, as if each of the foregoing had occurred on January 1,
    1996. The term "American Pro Forma Transactions" means the EZ Merger
    (including the prospective EZ transactions which are included in the
    American Probable Transactions), the BayCom Transaction, the Hartford
    Transaction, the HBC Merger (excluding the Omaha stations which are under
    an agreement to be sold) and the Baltimore Transaction and does not include
    all of the American Probable Transactions. See "Business--Recent
    Transactions" and "Unaudited Pro Forma Condensed Consolidated Financial
    Statements of American".
(4) In connection with a number of American Probable Transactions (and certain
    consummated acquisitions) American entered into local marketing agreements
    ("LMAs"). Net LMA expense represents the excess of monthly payments payable
    by American to the station owners over LMA revenue received by American.
    Net LMA expense is, in effect, a reimbursement to the station owners of
    their depreciation and amortization and interest expense and, upon
    acquisition of the stations by American, will be replaced by such expenses.
(5) The American Predecessor Entities' provision (benefit) for income taxes for
    the periods prior to 1994 represents the historical provision (benefit) for
    Stoner. Atlantic was a partnership and Boston AM was an S corporation and,
    accordingly, taxable income or loss flowed through to the partners and
    stockholder, respectively, of those entities. Multi Market has net
    operating loss carryforwards available to reduce future taxable income. As
    the realization of the benefit of those losses was not assured, no income
    tax benefit was recorded. Based on these circumstances, a combined tax
    provision for periods prior to 1994 has not been presented.
(6) "Broadcast cash flow" means operating income (loss) before net LMA
    expenses, depreciation and amortization and corporate general and
    administrative expenses. "EBITDA" means operating income (loss) before LMA
    expenses and depreciation and amortization. LMA expenses are, as explained
    in note (4), fees paid by American which permit American to program
    stations prior to their acquisition. "After-tax cash flow" means income
    (loss) before extraordinary items, plus depreciation and amortization, less
    stock dividends. Broadcast cash flow, EBITDA and after-tax cash flow should
    not be considered in isolation from, or as a substitute for, operating
    income, net income or cash flow and other consolidated income or cash flow
    statement data computed in accordance with generally accepted accounting
    principles or as a measure of American's profitability or liquidity.
    Although these measures of performance are not calculated in accordance
    with generally accepted accounting principles, they are widely used in the
    broadcasting industry as a measure of a radio company's operating
    performance because they assist in comparing radio station performance on a
    consistent basis across radio companies without regard to depreciation and
    amortization, which can vary significantly depending on accounting methods
    (particularly where acquisitions are involved) or non-operating factors
    such as historical cost bases. Broadcast cash flow also excludes the effect
    of corporate general and administrative expenses, which generally do not
    relate directly to station performance.
(7) For the purposes of this calculation, "earnings" consist of net income
    (loss) before income taxes, extraordinary items and fixed charges. "Fixed
    charges" consist of interest expense and amortization of debt discount and
    related expenses and the component of rental expense believed by management
    to be representative of the interest factor thereon. Earnings were
    insufficient to cover fixed charges and preferred stock dividends for each
    of the three years ended December 31, 1994 by approximately $4.4 million,
    $4.7 million and $1.4 million, respectively, and by approximately $37.9
    million for the pro forma year ended December 31, 1996.
 
  Giving effect to (i) the American Pro Forma Transactions, (ii) the remaining
American Probable Transactions not included therein and (iii) the Original
Offering and the use of the proceeds thereof, as if each had occurred on
January 1, 1996 (December 31, 1996, in the case of balance sheet data), for the
year ended December 31, 1996, net revenues would have been $360.9 million,
broadcast cash flow would have been $120.7 million, EBITDA would have been
$114.7 million, net interest expense and preferred stock dividends requirements
would have been $88.2 million, and long-term debt, including current portion,
would have been $690.7 million. On such basis, the ratio of total debt to
EBITDA would have been 6.02x and the ratio of EBITDA to interest expense and
preferred stock dividend requirements would have been 1.30x.
 
                                       13
<PAGE>
 
                                 RISK FACTORS
 
  Prospective investors in the securities offered hereby should carefully
review the information contained elsewhere in this Prospectus and should
particularly consider the following matters:
 
FACTORS RELATING TO AMERICAN AND ITS BUSINESS
 
  FINANCIAL LEVERAGE; DEBT SERVICE REQUIREMENTS. At December 31, 1996,
American had approximately $330.7 million in long-term debt (including the
current portion thereof) outstanding. After giving effect to the Original
Offering, the application of the net proceeds therefrom, and the American
Probable Transactions, as if each had occurred on December 31, 1996,
American's long-term debt outstanding would have been approximately $690.7
million, which would have comprised approximately 43.1% of American's total
capitalization, and its combined long-term debt and liquidation and redemption
obligations relating to the Convertible Preferred Stock and the Old Preferred
Stock (and/or the New Preferred Stock) would have been $1,028.2 million, which
would have comprised approximately 64.5% of American's total capitalization.
Had the Original Offering and the American Probable Transactions, as well as
the acquisitions and dispositions consummated during 1996 or thereafter,
occurred on January 1, 1996, pro forma net interest expense and net
distribution requirements on the Convertible Preferred Stock and Old Preferred
Stock (and/or the New Preferred Stock) for the year ended December 31, 1996
would have been approximately $88.2 million.
 
  In order to finance acquisitions of radio stations and for general corporate
purposes, American has borrowed and expects to continue to borrow and issue
indebtedness. A substantial portion of American's cash flow from operations is
required for debt service. American believes that cash flow from operations
will be sufficient to meet debt service requirements for interest and
scheduled payments of principal under the terms of its outstanding
indebtedness. However, American's leverage could make it vulnerable to a
downturn in the operating performance of its radio stations or a downturn in
economic conditions. If such cash flow was not sufficient to meet such debt
service requirements or payments of principal, American could be required to
sell equity securities, refinance its obligations or dispose of one or more of
its stations in order to make scheduled payments. There can be no assurance
that American would be able to effect any such transactions on favorable
terms. See "Management's Discussion and Analysis of Financial Condition and
Results of Operations--Liquidity and Capital Resources" in the American 10-K.
 
  American and the Tower Subsidiary are parties to three credit agreements (in
the case of American, the "Credit Agreements" and in the case of the Tower
Subsidiary, the "Tower Credit Agreement"), the borrowings under which bear
interest at variable rates. Therefore, increases in interest rates on
borrowings under such agreements would adversely affect American's income and
cash flow otherwise available for principal and operating requirements and the
ability of American to implement fully its strategic plan. Although American
intends to manage its exposure to fluctuating interest rates by entering into
interest rate protection and similar agreements, including interest rate
swaps, collars and caps with respect to a portion of the borrowings
thereunder, there can be no assurance that American will continue to be able
to enter into such agreements. See "Indebtedness of American".
 
  RESTRICTIONS IMPOSED BY TERMS OF INDEBTEDNESS. The indentures under which
the 9% Senior Subordinated Notes due 2006 of American (the "American Notes")
are outstanding (the "American Note Indenture") and the indenture under which
the 9 3/4% Senior Subordinated Notes of American (the "American-EZ Notes") are
outstanding (the "American-EZ Note Indenture" and, collectively with the
American Note Indenture, the "Note Indentures") contain certain restrictive
covenants, including limitations on (i) the incurrence of indebtedness and the
issuance of preferred stock by American and the Restricted Subsidiaries (as
defined in the Note Indentures); (ii) the payment of dividends and the making
of restricted payments; (iii) transactions with affiliates; (iv) the existence
of liens; (v) the disposition of proceeds of asset sales; (vi) Asset Swaps (as
defined in the Note Indentures); (vii) the making of guarantees by American
and the Restricted Subsidiaries; (viii) transfers and issuances of stock of
the Restricted Subsidiaries; (ix) the imposition of restrictions on certain
payments by the Restricted Subsidiaries; (x) investment in Unrestricted
Subsidiaries (as defined in the Note Indentures); and (xi) certain mergers and
sales of assets. The American-EZ Note Indenture
 
                                      14
<PAGE>
 
requires American to offer to purchase all of the American-EZ Notes at 101% of
their principal amount, upon consummation of the EZ Merger. Such offer
commenced on April 19, 1997 and expires May 19, 1997 and, to the extent it is
accepted, American will borrow the funds necessary to purchase tendered
American-EZ Notes under the applicable Credit Agreement. American will pay
$1,056.31 per $1,000 aggregate principal amount of EZ Notes tendered in
accordance with the offer to purchase.
 
  The Credit Agreements contain certain other and more restrictive covenants
than those contained in the Note Indentures, including requirements that
certain conditions be satisfied prior to the consummation of future
acquisitions of radio stations not in the largest 75 radio markets and
limitations on station dispositions. These covenants may adversely affect
American's ability to pursue its acquisition strategy. The Credit Agreements
also require American to maintain specific financial ratios and to satisfy
certain financial condition tests. The ability of American to meet these
financial ratios and financial condition tests can be affected by events
beyond its control, and there can be no assurance that American will meet
those tests.
 
  The breach of any of these covenants could result in a default under the
Credit Agreements, either Note Indenture, or all of them. In the event of a
default under the Credit Agreements or either Note Indenture, the lenders or
the noteholders, as the case may be, could seek to declare all amounts
outstanding under either or both of the Credit Agreements or the applicable
Note Indenture, as the case may be, together with accrued and unpaid interest,
if any, to be immediately due and payable. Under such circumstances, cross
default provisions would probably result in the amounts outstanding under all
such instruments becoming due and payable. If American were unable to repay
those amounts, the lenders under the Credit Agreements could proceed against
the collateral granted to them to secure that indebtedness. The Credit
Agreements provide for a lien on the capital stock of American's Restricted
Subsidiaries (including its FCC broadcast license holding subsidiary), and all
instruments and material agreements.
 
  The Tower Credit Agreement restricts the Tower Subsidiary's ability to pay
dividends to, or make loans to, or engage in other transactions with, American
and the Restricted Subsidiaries. The Tower Subsidiary is an unrestricted
subsidiary under the Credit Agreements and the Note Indentures. See
"Indebtedness of American" and "Management's Discussion and Analysis of
Financial Condition and Results of Operations--Liquidity and Capital
Resources" and the Notes to the Consolidated Financial Statements of American
in the American 10-K.
 
  COMPETITION. Radio broadcasting is a highly competitive business. Each of
American's radio stations competes for audience share and advertising revenue
directly with other radio stations, as well as with other media such as
newspapers, broadcast and cable television, magazines, billboards, direct
mail, compact discs and music videos. There are typically other well-
capitalized firms competing in the same geographic markets as American, many
of which have substantial financial resources. With the elimination of any
restrictions on the number of radio stations which may be owned nationally by
a single operator and the liberalization of local ownership restrictions
effected by the Telecommunications Act of 1996 (the "Telecommunications Act"),
the radio industry is experiencing a consolidation of ownership, as a result
of which competition may intensify as companies with substantial resources
emerge.
 
  The financial success of each of American's radio stations is dependent
principally upon each such station's share of the overall advertising revenue
within its geographic market, its promotion and other expenses incurred to
obtain that revenue and the economic health of the geographic market. Radio
advertising revenues are, in turn, highly dependent upon audience share.
Audience share is influenced by factors including: changes in listener
preference, audience migration to other media supplying music, news and other
entertainment and the programming decisions and promotional efforts of
competing stations in American's markets. The broadcast cash flow of
American's affected stations could decrease due to increased promotion and
other expenses incurred to respond to changes in its markets and/or lower
advertising revenues resulting from lower ratings.
 
                                      15
<PAGE>
 
  In addition to management experience, factors that may materially influence
a station's competitiveness include audience characteristics, local program
acceptance and the characteristics of other stations in the market area.
 
  As noted above, radio broadcasting is also subject to competition from
electronic and print media. Potential advertisers can substitute advertising
through broadcast television, cable television systems (which can offer
through cable interconnects concurrent exposure on a number of cable networks
to enlarge the potential audience), daily, weekly and free-distribution
newspapers, other print media, direct mail and on-line computer services for
radio advertising. Competing media frequently target the customers of their
competitors, and advertisers regularly shift dollars from radio to these
competing media and vice versa.
 
  Radio broadcasting is also subject to competition from new media
technologies that are being developed or introduced, such as the delivery of
audio programming by cable television systems or the introduction of digital
audio broadcasting ("DAB"). DAB may deliver by satellite to nationwide and
regional audiences, multi-channel, multi-format digital radio services with
sound quality equivalent to compact discs. The FCC has allotted and auctioned
spectrum for DAB to two companies that plan to implement DAB within the next
five years. Another possible competitor to traditional radio is In Band On
Channel ("IBOC") digital radio broadcasting. IBOC could provide multi-channel,
multi-format digital radio services in the same bandwidth currently occupied
by traditional FM radio services. American cannot predict the effect, if any,
that new technologies may have on the radio broadcasting industry. See
"Business--Federal Regulation of Radio Broadcasting".
 
  For information concerning additional potential competition from other
media, entertainment and telecommunications companies which might be able to
enter the radio broadcasting industry in the event of legislative or
regulatory change, see "--Regulatory Matters" below.
 
  There can be no assurance that any of American's radio stations will be able
to maintain or increase their current audience ratings and revenue market
share. See "Management's Discussion and Analysis of Financial Condition and
Results of Operations" in the American 10-K and "Business--Operating
Philosophy" and "--Advertising Sales".
 
  CONTROL BY THE PRINCIPAL STOCKHOLDERS; RESTRICTIONS ON CHANGE OF CONTROL. As
of March 31, 1997, Steven B. Dodge, Chairman of the Board, President and Chief
Executive Officer, and Thomas H. Stoner, Chairman of the Executive Committee
of the Board, together with their affiliates (the "Principal Stockholders"),
owned approximately 49.89% of the combined votes of the American voting stock.
After giving effect to the consummation of the EZ Merger, as of such date, the
Principal Stockholders would have owned approximately 43.95% of such combined
votes. Accordingly, the Principal Stockholders may, in effect, be able to
control the vote on all matters submitted to a vote of the holders of the
Common Stock, except with respect to (i) the election of two independent
directors, (ii) those matters which the Restated Certificate or applicable law
requires a 66 2/3% vote, and (iii) those matters requiring a class vote by
law. Control by the Principal Stockholders may have the effect of discouraging
certain types of transactions involving an actual or potential change of
control of American. See "Description of Capital Stock".
 
  The Credit Agreements, each of the Note Indentures, the Old Preferred Stock
and the Convertible Preferred Stock, as well as the agreement relating to the
broadcast of Boston Red Sox games, restrict, and the New Preferred Stock will
restrict, certain changes in control of American. In addition, the
Communications Act of 1934, as amended, including by the Telecommunications
Act (the "Communications Act"), and the rules of the FCC require the prior
consent of the FCC to any change of control of American. See "Business--
Federal Regulation of Radio Broadcasting".
 
  In addition to the stock ownership by the Principal Stockholders and the FCC
restrictions referred to above, certain provisions of the Restated Certificate
and Delaware law may have the effect of discouraging a third party from making
an acquisition proposal for the Company and may thereby inhibit a change of
control. See "Description of Capital Stock--Ownership Restrictions" and "--
Delaware Business Combination Provisions".
 
                                      16
<PAGE>
 
  DEPENDENCE ON KEY PERSONNEL. American's business is partially dependent upon
the performance of certain key individuals, including its executive officers,
station general managers and on-air announcers who are well recognized and
established in the markets in which American conducts business. American has
not entered into employment agreements with any of its executive officers, but
has entered into employment agreements, which contain non-compete provisions,
with certain of its station general managers and high-profile on-air
announcers. As additional incentive, certain of American's general managers
and executive officers have been granted options to purchase shares of Common
Stock which are subject to vesting provisions over a five year period.
However, there can be no assurance that American will be able to retain such
officers, managers or announcers, the loss of whom could have a material
adverse effect upon American, or that American will be able to prevent them
from competing with American in the event of their departure. American does
not maintain key man life insurance of any significance on the lives of any of
such officers, managers or announcers.
 
  ACQUISITION STRATEGY. As a result of recent acquisitions, including the EZ
Merger, American has experienced significant expansion. Since January 1, 1996,
American has consummated or has pending acquisitions for an aggregate
consideration of approximately $1.4 billion. American intends to continue its
active acquisition strategy as described elsewhere in this Prospectus.
Inherent in such a strategy are certain risks, such as increasing leverage and
debt service requirements, combining disparate company cultures and
facilities, and operating stations in many geographically diverse markets,
which could adversely affect ratings and revenues in a given market. Certain
of these risks may be increased to the extent that American's future
acquisitions are in larger markets and/or involve multiple stations in several
markets, as did the EZ Merger. Accordingly, there can be no assurance that one
or more of American's past or future acquisitions may not have an adverse
effect on its business.
 
  The Credit Agreements impose certain restrictions on acquisitions of radio
stations not in the largest 75 radio markets and, in addition, the Credit
Agreements and each Note Indenture contain borrowing limits. Since American
may, from time to time, be at or near its borrowing limits, there can be no
assurance that the lenders will consent to increased borrowing levels, and
this may inhibit the ability of American to implement its acquisition
strategy. The Note Indentures also contain restrictions which, under certain
circumstances, could impair the ability of American to make acquisitions.
 
  American competes and will continue to compete with many other buyers, both
radio operators and financial institutions, for the acquisition of radio
stations. Certain of those competitors have greater financial and other
resources than those of American. In addition, if the prices sought by sellers
of radio stations continue to rise, American may find fewer acceptable
acquisition opportunities. For information concerning additional potential
competition from other media, entertainment and telecommunication companies
for acquisitions, see "Business--Federal Regulation of Radio Broadcasting".
 
  American may not be able to implement its acquisition strategy because of
the application of the FCC's cross ownership rules, cross-interest policy or
other rules and policies. These rules and policies could prevent American from
making future acquisitions if the Principal Stockholders or certain other
stockholders or officers and directors also have or acquire attributable
interests in broadcast or other media properties. It is not possible to know,
however, whether future legislative or regulatory action may change applicable
ownership rules or policies or, if it does, whether such changes would make
those limitations more or less restrictive. See "Business--Acquisition
Strategy" and "--Federal Regulation of Radio Broadcasting".
 
  ANTITRUST MATTERS. As a consequence of the consolidation of ownership in the
radio broadcast industry resulting from the enactment of the
Telecommunications Act, the Antitrust Division of the United States Department
of Justice (the "Antitrust Division") has been giving closer scrutiny to
acquisitions in the industry, including some of those of American. The
consummation of many of the acquisitions are subject to notification filing
requirements, applicable waiting periods and possible review by the Antitrust
Division or the Federal Trade Commission ("FTC") under the Hart-Scott-Rodino
Antitrust Improvements Act of 1976, as amended (the "HSR Act"). The Antitrust
Division issued Second Requests for additional information in connection with
acquisitions
 
                                      17
<PAGE>
 
by American in Rochester, Sacramento and West Palm Beach. See "Business--
Recent Transactions--Consummated Transactions--Rochester" and "--Sacramento".
The Antitrust Division also issued a Civil Investigative Demand to both EZ and
American in connection with one of the American Probable Transactions in
Charlotte. See "Business--Recent Transactions--Pending Acquisitions and
Dispositions--Charlotte." In October 1996, American entered into a consent
decree (the "Rochester Consent Decree") with the Antitrust Division with
respect to the American Probable Transactions in Rochester resulting in a
negotiated settlement with the Antitrust Division which modified the Rochester
Transaction. In February 1997, American entered into consent decrees (the
"Charlotte Consent Decree" and the "Sacramento Consent Decree") with the
Antitrust Division with respect to the American Probable Transactions in
Charlotte and Sacramento, respectively, resulting in a negotiated settlement
with the Antitrust Division with respect to the disposition of one FM station
in each of those markets. See "Business--Recent Transactions--Pending
Acquisitions and Dispositions--Charlotte" and "--Sacramento". Antitrust
Division review of certain transactions has caused, and may continue to cause,
delays in anticipated consummations of certain transactions and, in some
cases, resulted and may result in negotiated modifications of the proposed
transactions. Antitrust agency review and/or such delays and modifications
could have an adverse effect on American and could result in the required
divestiture of presently owned stations or the abandonment of some of these or
other attractive transactions.
 
  As part of its increased scrutiny of radio broadcast industry transactions,
the Antitrust Division is currently reviewing its internal guidelines for
antitrust review of other widespread radio broadcasting agreements, including
local marketing agreements ("LMAs"), time brokerage agreements ("TBAs") and
certain joint sales and service agreements ("JSAs"). The Antitrust Division
has informally contacted industry representatives to express certain concerns
regarding LMAs and TBAs and has suggested that radio broadcasting companies
file notification and obtain clearance under the HSR Act prior to commencing
certain LMAs or TBAs. As a result of these informally expressed concerns,
American has instituted internal policies to obtain any required HSR Act
clearance prior to commencing any future LMAs or TBAs. See "Business--Federal
Regulation of Radio Broadcasting--Local Marketing Agreements" for a
description of local marketing agreements and time brokerage agreements. The
Antitrust Division has also informally expressed to American that it is
investigating whether the terms of certain JSAs in certain markets may violate
antitrust laws. A JSA involves the purchase by a third party of some or all of
the commercial advertising time of a particular radio station for resale by
the third party directly to advertisers. As part of the Rochester Consent
Decree, American terminated a JSA in that market. Although American believes
that each of its LMAs and TBAs is in compliance with the antitrust laws, the
Antitrust Division or others could take action under the antitrust laws to
enjoin or otherwise challenge such arrangements. There can be no assurance
that such a challenge will not be made or, if made, will not be successful.
 
  REGULATORY MATTERS. The radio broadcasting industry is subject to extensive
and changing regulation governing, among other things, technical operations,
ownership, business and employment practices, and certain types of program
content (including indecent and obscene program material). The FCC regulates
radio broadcast stations pursuant to the Communications Act. The
Communications Act permits the operation of radio broadcast stations only in
accordance with a license issued by the FCC upon a finding that the grant of a
license would serve the public interest, convenience and necessity. The
Communications Act provides for the FCC to exercise its licensing authority to
provide a fair, efficient and equitable distribution of broadcast service
through out the United States. Among other things, the FCC assigns frequency
bands for radio broadcasting; determines the particular frequencies, locations
and operating power of radio broadcast stations; issues, renews, revokes and
modifies radio broadcast station licenses; regulates transmitting equipment
used by radio broadcast stations; adopts and implements regulations and
policies that directly or indirectly affect the ownership, operation, program
content and employment and business practices of radio broadcast stations; and
has the power to impose penalties for violations of its rules and the
Communications Act.
 
  The FCC also regulates the ownership, operation and sale of radio broadcast
stations. The Communications Act prohibits the assignment of an FCC license,
or the transfer of control of an FCC licensee, without the prior approval of
the FCC. In determining whether to grant requests for consents to assignments
or transfers, and in determining whether to grant or renew a radio broadcast
license, the FCC considers a number of factors
 
                                      18
<PAGE>
 
pertaining to the legal and other qualifications of the licensee (and any
proposed licensee), including restrictions on foreign ownership, compliance
with FCC media ownership rules, licensee "character" and compliance with the
Anti-Drug Abuse Act of 1988, which allows courts to disqualify individuals
from the benefits of federal licenses as a penalty for certain drug-related
offenses.
 
  The Congress and the FCC have had under consideration, and may in the future
consider and adopt, new laws, regulations and policies regarding a wide
variety of matters that could, directly or indirectly, affect the operation,
ownership and profitability of American's radio broadcast stations, result in
the loss of audience share and advertising revenues for American's radio
broadcast stations or affect its ability to acquire additional radio broadcast
stations or make other acquisitions. American cannot predict whether or when
any proposed changes will be adopted nor can it predict what other matters
might be considered in the future, nor can it judge in advance the impact, if
any, the implementation of any of these proposals or changes might have on its
business. See "Business--Federal Regulation of Radio Broadcasting".
 
FACTORS RELATING TO THE SECURITIES
 
  DIVIDEND AND REPAYMENT RESTRICTIONS ON NEW PREFERRED STOCK AND EXCHANGE
DEBENTURES. American is and will be restricted under its debt instruments from
paying dividends on and repurchasing, redeeming or otherwise acquiring any
shares of Preferred Stock, including the New Preferred Stock, and from
repurchasing, redeeming or otherwise acquiring for value the Exchange
Debentures unless certain financial tests are met and then only in accordance
with a formula based on cash flow and only in the absence of a default. See
"Description of Capital Stock--Dividend Restrictions", "Indebtedness of
American" and "Management's Discussion and Analysis of Financial Condition and
Results of Operations--Liquidity and Capital Resources" in the American 10-K.
 
  American may elect to pay dividends on the New Preferred Stock on any
dividend payment date occurring on or before January 15, 2002 by issuing
additional shares of New Preferred Stock. If at any time American is in cash
dividend arrears on the Convertible Preferred Stock or any other Parity
Securities (as defined under "Description of the New Preferred Stock--
Ranking"), whether as a result of payment restrictions contained in American's
debt instruments or otherwise, American will be permitted to pay dividends on
the New Preferred Stock only pro rata with such Parity Securities (if at all),
even if American elects to pay such dividends by issuing additional shares of
New Preferred Stock.
 
  SUBORDINATION OF EXCHANGE DEBENTURES. The payment of principal of and
interest on the Exchange Debentures will be subordinated to all existing and
future Senior Debt (as defined in the Indenture relating to the Exchange
Debentures) of American. In addition, the Exchange Debentures will be
effectively subordinated to all existing and future Indebtedness of American's
subsidiaries (including guarantees of American's Indebtedness). As a result of
such subordination, in the event of American's insolvency, liquidation,
reorganization, dissolution or other winding up, or upon the acceleration of
any Senior Debt, the holders of Senior Debt must be paid in full before the
holders of the Exchange Debentures may be paid. Furthermore, payments on the
Exchange Debentures will not be permitted if a default exists or would be
caused with respect to any Senior Debt. Senior Debt includes indebtedness
outstanding under the Credit Agreements, the American Notes, the American-EZ
Notes and, unless otherwise designated by American prior to their issuance,
the Convertible Exchange Debentures. See "Description of the Exchange
Debentures--Subordination of Exchange Debentures" and "Indebtedness of
American".
 
  RISK OF INABILITY TO FINANCE CHANGE OF CONTROL OFFER. In the event of a
Change of Control, American will be required to make an offer to purchase all
New Preferred Stock or Exchange Debentures, as the case may be, then
outstanding at a purchase price, in cash, equal to 101% of the liquidation
preference or principal amount thereof plus accumulated and unpaid dividends
or interest, if any, to the date of purchase. There can be no assurance that
American would be able to obtain such funds through a refinancing of the New
Preferred Stock or Exchange Debentures, as the case may be, to be purchased or
otherwise, or that the purchase would be permitted
 
                                      19
<PAGE>
 
under the Credit Agreements or either Note Indenture. American's debt
instruments also contain provisions relating to a change of control which
require repayment of such debt in the event of a change of control as defined
therein. Also, the requirement that American make an offer to purchase all New
Preferred Stock or Exchange Debentures, as the case may be, then outstanding
in the event of a Change of Control may have the effect of deterring a third
party from effecting a transaction that would constitute a Change of Control.
American's debt instruments restrict, and if a default under any thereof
exists prohibit, repurchase of the New Preferred Stock and the Exchange
Debentures, including upon a change of control. See "Description of the New
Preferred Stock--Change of Control", "Description of the Exchange Debentures--
Certain Covenants--Change of Control" and "Indebtedness of American".
 
  LACK OF TRADING MARKET FOR THE NEW PREFERRED STOCK. There is no existing
trading market for the Old Preferred Stock, and there can be no assurance
regarding the future development of a market for the New Preferred Stock, or
the ability of holders to sell, or the price at which such holders may be able
to sell, their New Preferred Stock. If such a market were to develop, the New
Preferred Stock could trade at prices that may be higher or lower than the
initial offering price depending on many factors, including prevailing
interest rates, American's operating results and the market for similar
securities. Credit Suisse First Boston, Alex. Brown & Sons Incorporated, BT
Securities Corporation, Morgan Stanley & Co Incorporated and Smith Barney Inc.
(the "Initial Purchasers") have advised American that they currently intend to
make a market in the New Preferred Stock. The Initial Purchasers are not
obligated to do so, however, and any market making with respect to the New
Preferred Stock may be discontinued at any time without notice. Therefore,
there can be no assurance as to the liquidity of any trading market for the
New Preferred Stock or that an active market for the New Preferred Stock will
develop. The foregoing considerations would also apply to any Exchangeable
Debentures. American does not intend to list the New Preferred Stock on any
securities exchange or to seek approval for quotation through any automated
quotation system.
 
                                      20
<PAGE>
 
                              THE EXCHANGE OFFER
 
PURPOSE AND EFFECT
 
  The shares of Old Preferred Stock were sold by American on January 30, 1997,
in the Original Offering. In connection with that placement, American entered
into the Registration Rights Agreement, which requires American to file a
registration statement under the Securities Act with respect to the New
Preferred Stock and, upon the effectiveness of that registration statement, to
offer to the holders of the Old Preferred Stock the opportunity to exchange
their shares of Old Preferred Stock for the same number of shares of New
Preferred Stock, which will be issued without a restrictive legend and which
may be reoffered and resold by the holder without registration under the
Securities Act. The Registration Rights Agreement further provides that
American must use its best efforts to (i) cause the Registration Statement
with respect to the Exchange Offer to be declared effective on or before July
29, 1997 and (ii) consummate the Exchange Offer on or before September 12,
1997. Except as provided below, upon the completion of the Exchange Offer,
American's obligations with respect to the registration of the Old Preferred
Stock and the New Preferred Stock will terminate. A copy of the Registration
Rights Agreement has been filed with the Commission and is part of the
Registration Statement of which this Prospectus is a part and the summary
herein of certain provisions thereof does not purport to be complete and is
subject to, and is qualified in its entirety by reference to, such agreement.
As a result of the filing and the effectiveness of the Registration Statement,
certain additional dividends provided for in the certificate of designations
governing the Old Preferred Stock will not become payable by American.
Following the completion of the Exchange Offer (except as set forth in the
paragraph immediately below), holders of shares of Old Preferred Stock not
tendered will not have any further registration rights and those shares of Old
Preferred Stock will continue to be subject to certain restrictions on
transfer. Accordingly, the liquidity of the market for the Old Preferred Stock
could be adversely affected upon completion of the Exchange Offer.
 
  In order to participate in the Exchange Offer, a holder must represent to
American, among other things, that (i) the shares of New Preferred Stock
acquired pursuant to the Exchange Offer are being obtained in the ordinary
course of business of the person receiving the New Preferred Stock, (ii)
neither the holder nor any such other person is engaging in or intends to
engage in a distribution of the New Preferred Stock, (iii) neither the holder
nor any such other person has an arrangement or understanding with any person
to participate in the distribution of the New Preferred Stock, and (iv)
neither the holder nor any such other person is an "affiliate," as defined in
Rule 405 under the Securities Act, of American. Pursuant to the Registration
Rights Agreement, American is required to file a "shelf" registration
statement for a continuous offering pursuant to Rule 415 under the Securities
Act in respect of the Old Preferred Stock if (i) because of any change in law
or in currently prevailing interpretations of the staff of the Commission,
American is not permitted to effect the Exchange Offer, (ii) the Exchange
Offer is not consummated within 225 days of the Original Offering, (iii) the
holders of not less than a majority of shares of Old Preferred Stock determine
that the interests of the holders would be adversely affected by the
consummation of the Exchange Offer, or (iv) any holder of Old Preferred Stock
participates in the Exchange Offer and does not receive freely transferrable
shares of New Preferred Stock in exchange for Old Preferred Stock (other than
as a result of the status of such holder as an "affiliate" of American. In the
event that American is obligated to file a "shelf" registration statement, it
will be required to keep such "shelf" registration statement effective until
such time as all of the New Preferred Stock has been sold thereunder or on the
date which all New Preferred Stock held by persons that are not "affiliates"
of American may be resold without registration pursuant to Rule 144(b) under
the Securities Act. Other than as set forth in this paragraph, no holder will
have the right to participate in the "shelf" registration statement nor
otherwise to require that American register such holder's shares of Old
Preferred Stock under the Securities Act. See "--Procedures for Tendering."
 
  Based on an interpretation by the Commission's staff set forth in no-action
letters issued to third-parties unrelated to American, American believes that,
with the exceptions set forth below, shares of New Preferred Stock issued
pursuant to the Exchange Offer in exchange for Old Preferred Stock may be
offered for resale, resold and otherwise transferred by any person receiving
such New Preferred Stock, whether or not such person is the holder (other than
any such holder or such other person which is an "affiliate" of American)
without
 
                                      21
<PAGE>
 
compliance with the registration and prospectus delivery provisions of the
Securities Act, provided that the shares of New Preferred Stock are acquired
in the ordinary course of business of the holder or such other person and
neither the holder nor such other person has an arrangement or understanding
with any person to participate in the distribution of such New Preferred
Stock. Any holder who tenders in the Exchange Offer for the purpose of
participating in a distribution of the New Preferred Stock cannot rely on this
interpretation by the Commission's staff and must comply with the registration
and prospectus delivery requirements of the Securities Act in connection with
an secondary resale transaction. Each broker-dealer that receives shares of
New Preferred Stock for its own account in exchange for Old Preferred Stock,
where the shares of Old Preferred Stock were acquired by that broker-dealer as
a result of market-making activities or other trading activities, must
acknowledge that it will deliver a prospectus in connection with any resale of
such New Preferred Stock. See "Plan of Distribution."
 
CONSEQUENCES OF FAILURE TO EXCHANGE
 
  Following the completion of the Exchange Offer (except as set forth in the
second paragraph under "--Purpose and Effect" above), holders of shares of Old
Preferred Stock not tendered will not have any further registration rights and
untendered shares of Old Preferred Stock will continue to be subject to
certain restrictions on transfer. Accordingly, the liquidity of the market for
a holder's shares of Old Preferred Stock could be adversely affected upon
completion of the Exchange Offer if the holder does not participate in the
Exchange Offer.
 
TERMS OF THE EXCHANGE OFFER
 
  Upon the terms and subject to the conditions set forth in this Prospectus
and in the Letter of Transmittal, American will accept any and all shares of
Old Preferred Stock validly tendered and not withdrawn prior to 5:00 p.m., New
York City time, on the Expiration Date. American will issue one share of New
Preferred Stock in exchange for each share of outstanding Old Preferred Stock
accepted in the Exchange Offer. Holders may tender some or all of their shares
of Old Preferred Stock pursuant to the Exchange Offer.
 
  The powers, preferences and relative rights of the New Preferred Stock are
substantially the same as those of the Old Preferred Stock except that the
shares of New Preferred Stock have been registered under the Securities Act
and will not bear legends restricting their transfer.
 
  As of April 15, 1997, 2,047,391 shares of Old Preferred Stock were issued
and outstanding and there was one registered holder, a nominee of DTC. This
Prospectus, together with the Letter of Transmittal, is being sent to such
registered holder and to others believed to have beneficial interests in the
Old Preferred Stock. Holders of shares of Old Preferred Stock do not have any
appraisal or dissenters' rights under the General Corporation Law of the State
of Delaware in connection with the Exchange Offer. American intends to conduct
the Exchange Offer in accordance with the applicable requirements of the
Exchange Act and the rules and regulations of the Commission promulgated
thereunder.
 
  American shall be deemed to have accepted validly tendered shares of Old
Preferred Stock when, as and if American has given oral or written notice
thereof to the Exchange Agent. The Exchange Agent will act as agent for the
tendering holders for the purpose of receiving the shares of New Preferred
Stock from American. If any tendered shares of Old Preferred Stock are not
accepted for exchange because of an invalid tender, the occurrence of certain
other events set forth herein or otherwise, certificates for any such
unaccepted shares of Old Preferred Stock will be returned, without expense, to
the tendering holder thereof as promptly as practicable after the Expiration
Date.
 
  Holders who tender shares of Old Preferred Stock in the Exchange Offer will
not be required to pay brokerage commissions or fees or, subject to the
instructions in the Letter of Transmittal, transfer taxes with respect to the
exchange of shares of Old Preferred Stock pursuant to the Exchange Offer.
American will pay all charges and expenses, other than certain applicable
taxes, in connection with the Exchange Offer. See "--Fees and Expenses".
 
                                      22
<PAGE>
 
EXPIRATION DATE; EXTENSIONS; AMENDMENTS
 
  The term "Expiration Date" shall mean 5:00 p.m., New York City time, on June
23, 1997, unless American, in its sole discretion, extends the Exchange Offer,
in which case the term "Expiration Date" shall mean the latest date and time
to which the Exchange Offer is extended. In order to extend the Exchange
Offer, American will notify the Exchange Agent and issue a notice of such
extension by press release or other public announcement prior to 9:00 a.m.,
New York City time, on the next business day after the previously scheduled
Expiration Date. American reserves the rights, in its sole discretion, (i) to
delay accepting any shares of Old Preferred Stock, to extend the Exchange
Offer or, if any of the conditions set forth under "--Conditions to Exchange
Offer" shall not have been satisfied, to terminate the Exchange Offer, by
giving oral or written notice of such delay, extension or termination to the
Exchange Agent, or (ii) to amend the terms of the Exchange Offer in any
manner.
 
PROCEDURES FOR TENDERING
 
  Only a registered holder of shares of Old Preferred Stock may tender the Old
Preferred Stock in the Exchange Offer. Except as set forth under "--Book-Entry
Transfer" below, to tender in the Exchange Offer a holder must complete, sign,
and date the Letter of Transmittal, or a copy thereof, have the signatures
thereon guaranteed if required by the Letter of Transmittal, and mail or
otherwise deliver the Letter of Transmittal or copy thereof to the Exchange
Agent prior to the Expiration Date. In addition, either (i) certificates for
such shares of Old Preferred Stock must be received by the Exchange Agent
along with the Letter of Transmittal, or (ii) a timely confirmation of a book-
entry transfer (a "Book-Entry Confirmation") of such shares of Old Preferred
Stock, if that procedure is available, into the Exchange Agent's account at
DTC (the "Book-Entry Transfer Facility") pursuant to the procedure for book-
entry transfer described below, must be received by the Exchange Agent prior
to the Expiration Date, or (iii) the holder must comply with the guaranteed
delivery procedures described below. To be tendered effectively, the Letter of
Transmittal and other required documents must be received by the Exchange
Agent at the address set forth under "--Exchange Agent" below prior to the
Expiration Date.
 
  Tender of Old Preferred Stock by a holder that is not withdrawn before the
Expiration Date will constitute an agreement between that holder and American
in accordance with the terms and subject to the conditions set forth herein
and in the Letter of Transmittal.
 
  THE METHOD OF DELIVERY OF SHARES OF OLD PREFERRED STOCK AND THE LETTER OF
TRANSMITTAL AND ALL OTHER REQUIRED DOCUMENTS TO THE EXCHANGE AGENT IS AT THE
ELECTION AND RISK OF THE HOLDER. INSTEAD OF DELIVERY BY MAIL, IT IS
RECOMMENDED THAT HOLDERS USE AN OVERNIGHT OR HAND DELIVERY SERVICE. IN ALL
CASES, SUFFICIENT TIME SHOULD BE ALLOWED TO ASSURE DELIVERY TO THE EXCHANGE
AGENT BEFORE THE EXPIRATION DATE. NO LETTER OF TRANSMITTAL OR OLD PREFERRED
STOCK SHOULD BE SENT TO AMERICAN. HOLDERS MAY REQUEST THEIR RESPECTIVE
BROKERS, DEALERS, COMMERCIAL BANKS, TRUST COMPANIES, OR NOMINEES TO EFFECT
THESE TRANSACTIONS FOR SUCH HOLDERS.
 
  Any beneficial owner whose shares of Old Preferred Stock are registered in
the name of a broker, dealer, commercial bank, trust company, or other nominee
and who wishes to tender should contact the registered holder promptly and
instruct the registered holder to tender on the beneficial owner's behalf. If
the beneficial owner wishes to tender on the owner's own behalf, the owner
must, prior to completing and executing the Letter of Transmittal and
delivering the owner's shares of Old Preferred Stock, either make appropriate
arrangements to register ownership of the Old Preferred Stock in the
beneficial owner's name or obtain a properly completed power from the
registered holder. The transfer of registered ownership may take considerable
time.
 
  Signatures on a Letter of Transmittal or a notice of withdrawal, as the case
may be, must be guaranteed by an Eligible Institution (as defined below)
unless shares of Old Preferred Stock tendered pursuant thereto are tendered
(i) by a registered holder who has not completed the box entitled "Special
Delivery Instructions" on
 
                                      23
<PAGE>
 
the Letter of Transmittal or (ii) for the account of an Eligible Institution.
If signatures on a Letter of Transmittal or a notice of withdrawal, as the
case may be, are required to be guaranteed, the guarantee must be by any
eligible guarantor institution that is a member of or participant in the
Securities Transfer Agents Medallion Program, the New York Stock Exchange
Medallion Signature Program, the Stock Exchange Medallion Program, or an
"eligible guarantor institution" within the meaning of Rule 17Ad-15 under the
Exchange Act (an "Eligible Institution").
 
  If the Letter of Transmittal is signed by a person other than the registered
holder of any shares of Old Preferred Stock listed therein, the shares of Old
Preferred Stock must be endorsed or accompanied by a properly completed stock
power, signed by the registered holder as that registered holder's name
appears on the Old Preferred Stock.
 
  If the Letter of Transmittal or any shares of Old Preferred Stock or stock
powers are signed by trustees, executors, administrators, guardians,
attorneys-in-fact, officers of corporations, or others acting in a fiduciary
or representative capacity, such persons should so indicate when signing, and
evidence satisfactory to American of their authority to so act must be
submitted with the Letter of Transmittal unless waived by American.
 
  All questions as to the validity, form, eligibility (including time of
receipt), acceptance, and withdrawal of tendered shares of Old Preferred Stock
will be determined by American in its sole discretion, which determination
will be final and binding. American reserves the absolute right to reject any
and all shares of Old Preferred Stock not properly tendered or any shares of
Old Preferred Stock American's acceptance of which would, in the opinion of
counsel for American, be unlawful. American also reserves the right to waive
any defects, irregularities, or conditions of tender as to particular shares
of Old Preferred Stock. American's interpretation of the terms and conditions
of the Exchange Offer (including the instructions in the Letter of
Transmittal) will be final and binding on all parties. Unless waived, any
defects or irregularities in connection with tenders of shares of Old
Preferred Stock must be cured within such time as American shall determine.
Although American intends to notify holders of defects or irregularities with
respect to tenders of shares of Old Preferred Stock, neither American, the
Exchange Agent, nor any other person shall incur any liability for failure to
give such notification. Tenders of shares of Old Preferred Stock will not be
deemed to have been made until such defects or irregularities have been cured
or waived. Any shares of Old Preferred Stock received by the Exchange Agent
that are not properly tendered and as to which the defects or irregularities
have not been cured or waived will be returned by the Exchange Agent to the
tendering holders, unless otherwise provided in the Letter of Transmittal, as
soon as practicable following the Expiration Date.
 
  In addition, American reserves the right in its sole discretion to purchase
or make offers for any shares of Old Preferred Stock that remain outstanding
after the Expiration Date or, as set forth under "--Conditions" below, to
terminate the Exchange Offer and, to the extent permitted by applicable law,
purchase shares of Old Preferred Stock in the open market, in privately
negotiated transactions, or otherwise. The terms of any such purchases or
offers could differ from the Exchange Offer.
 
  By tendering, each holder will represent to American that, among other
things, (i) the shares of New Preferred Stock acquired pursuant to the
Exchange Offer are being obtained in the ordinary course of business of the
person receiving such New Preferred Stock, whether or not such person is the
registered holder, (ii) neither the holder nor any such other person is
engaging in or intends to engage in a distribution of such New Preferred
Stock, (iii) neither the holder nor any such other person has an arrangement
or understanding with any person to participate in the distribution of such
New Preferred Stock, and (iv) neither the holder nor any such other person is
an "affiliate," as defined in Rule 405 under the Securities Act, of American.
 
  In all cases, issuance of shares of New Preferred Stock for Old Preferred
Stock that are accepted for exchange pursuant to the Exchange Offer will be
made only after timely receipt by the Exchange Agent of certificates for such
shares of Old Preferred Stock or a timely Book-Entry Confirmation of such
shares of Old Preferred Stock into the Exchange Agent's account at the Book-
Entry Transfer Facility, a properly completed and duly executed Letter of
Transmittal (or, with respect to the DTC and its participants, electronic
instructions
 
                                      24
<PAGE>
 
in which the tendering holder acknowledges its receipt of and agreement to be
bound by the Letter of Transmittal), and all other required documents. If any
tendered shares of Old Preferred Stock are not accepted for any reason set
forth in the terms and conditions of the Exchange Offer or if certificates
representing Old Preferred Stock are submitted for a greater number of shares
than the holder desires to exchange, such unaccepted or non-exchanged shares
of Old Preferred Stock will be returned without expense to the tendering
Holder thereof (or, in the case of shares of Old Preferred Stock tendered by
book-entry transfer into the Exchange Agent's account at the Book-Entry
Transfer Facility pursuant to the book-entry transfer procedures described
below, such nonexchanged shares of Old Preferred Stock will be credited to an
account maintained with such Book-Entry Transfer Facility) as promptly as
practicable after the expiration or termination of the Exchange Offer.
 
BOOK-ENTRY TRANSFER
 
  The Exchange Agent will make a request to establish an account with respect
to the Old Preferred Stock at the Book-Entry Transfer Facility for purposes of
the Exchange Offer within two business days after the date of this Prospectus,
and any financial institution that is a participant in the Book-Entry Transfer
Facility's systems may make book-entry delivery of Old Preferred Stock being
tendered by causing the Book-Entry Transfer Facility to transfer such Old
Preferred Stock into the Exchange Agent's account at the Book-Entry Transfer
Facility in accordance with such Book-Entry Transfer Facility's procedures for
transfer. However, although delivery of shares of Old Preferred Stock may be
effected through book-entry transfer at the Book-Entry Transfer Facility, the
Letter of Transmittal or copy thereof, with any required signature guarantees
and any other required documents, must, in any case other than as set forth in
the following paragraph, be transmitted to and received by the Exchange Agent
at the address set forth under "--Exchange Agent" below on or prior to the
Expiration Date or the guaranteed delivery procedures described below must be
complied with.
 
  DTC's Authorized Tender Offer Program ("ATOP") is the only method of
processing exchange offers through DTC. To accept the Exchange Offer through
ATOP, participants in DTC must send electronics instructions to DTC through
DTC's communication system in lieu of sending a signed, hard copy Letter of
Transmittal. DTC is obligated to communicate those electronic instructions to
the Exchange Agent. To tender shares of Old Preferred Stock through ATOP, the
electronic instructions sent to DTC and transmitted by DTC to the Exchange
Agent must contain the character by which the participant acknowledges its
receipt of, and agrees to be bound by the terms of, the Letter of Transmittal.
 
GUARANTEED DELIVERY PROCEDURES
 
  If a registered holder of the shares of Old Preferred Stock desires to
tender such Old Preferred Stock and the shares of Old Preferred Stock are not
immediately available, or time will not permit such holder's Old Preferred
Stock or other required documents to reach the Exchange Agent before the
Expiration Date, or the procedure for book-entry transfer cannot be completed
on a timely basis, a tender may be effected if (i) the tender is made through
an Eligible Institution, (ii) prior to the Expiration Date, the Exchange Agent
received from such Eligible Institution a properly completed and duly executed
Letter of Transmittal (or a facsimile thereof) and Notice of Guaranteed
Delivery, substantially in form provided by American (by telegram, telex,
facsimile transmission, mail or hand delivery), setting forth the name and
address of the holder of shares of Old Preferred Stock and the amount of
shares of Old Preferred Stock tendered, stating that the tender is being made
thereby and guaranteeing that within three New York Stock Exchange ("NYSE")
trading days after the date of execution of the Notice of Guaranteed Delivery,
the certificates for all physically tendered shares of Old Preferred Stock, in
proper form for transfer, or a Book-Entry Confirmation, as the case may be,
and any other documents required by the Letter of Transmittal will be
deposited by the Eligible Institution with the Exchange Agent, and (iii) the
certificates for all physically tendered shares of Old Preferred Stock, in
proper form for transfer, or a Book-Entry Confirmation, as the case may be,
and all other documents required by the Letter of Transmittal, are received by
the Exchange Agent within three NYSE trading days after the date of execution
of the Notice of Guaranteed Delivery.
 
                                      25
<PAGE>
 
WITHDRAWAL RIGHTS
 
  Tenders of shares of Old Preferred Stock may be withdrawn at any time prior
to 5:00 p.m., New York City time, on the Expiration Date.
 
  For a withdrawal of a tender of shares of Old Preferred Stock to be
effective, a written or (for DTC participants) electronic ATOP transmission
notice of withdrawal must be received by the Exchange Agent at its address set
forth in this Prospectus prior to 5:00 p.m., New York City time, on the
Expiration Date. Any such notice of withdrawal must (i) specify the name of
the person having deposited the shares of Old Preferred Stock to be withdrawn
(the "Depositor"), (ii) identify the shares of Old Preferred Stock to be
withdrawn (including the certificate number of numbers and principal amount of
such shares of Old Preferred Stock), (iii) be signed by the holder in the same
manner as the original signature on the Letter of Transmittal by which such
shares of Old Preferred Stock were tendered (including any required signature
guarantees) or be accompanied by documents of transfer sufficient to have the
Exchange Agent registered the transfer of such Old Preferred Stock into the
name of the person withdrawing the tender, and (iv) specify the name in which
any such shares of Old Preferred Stock are to be registered, if different from
that of the Depositor. All questions as to the validity, form, and eligibility
(including time of receipt) of such notices will be determined by American,
whose determination shall be final and binding on all parties. Any shares of
Old Preferred Stock so withdrawn will be deemed not to have been validly
tendered for exchange for purposes of the Exchange Offer. Any shares of Old
Preferred Stock which have been tendered for exchange but which are not
exchanged for any reason will be returned to the holder thereof without cost
to such holder as soon as practicable after withdrawal, rejection of tender or
termination of the Exchange Offer. Properly withdrawn shares of Old Preferred
Stock may be retendered by following one of the procedures under "--Procedures
for Tendering" above at any time on or prior to the Expiration Date.
 
CONDITIONS TO THE EXCHANGE OFFER
 
  Notwithstanding any other provision of the Exchange Offer, American shall
not be required to accept for exchange, or to issue shares of New Preferred
Stock in exchange for, any shares of Old Preferred Stock and may terminate or
amend the Exchange Offer if, any time before the acceptance of such Old
Preferred Stock for exchange or the exchange of the New Preferred Stock for
such Old Preferred Stock, American determines that the Exchange Offer violates
applicable law, any applicable interpretation of the staff of the Commission
or any order of any governmental agency or court of competent jurisdiction.
 
  The foregoing conditions are for the sole benefit of American and may be
asserted by American regardless of the circumstances giving rise to any such
condition or may be waived by American in whole or in part at any time and
from time to time in its sole discretion. The failure by American at any time
to exercise any of the foregoing rights shall not be deemed a waiver of any
such right and each such right shall be deemed on ongoing right which may be
asserted at any time from time to time.
 
  In addition, American will not accept for exchange any shares of Old
Preferred Stock tendered, and no shares of New Preferred Stock will be issued
in exchange for any such Old Preferred Stock, if at such time any stop order
shall be threatened or in effect with respect to the Registration Statement of
which this Prospectus constitutes a part. In any such event American is
required to use every reasonable effort to obtain the withdrawal of any stop
order at the earliest possible time.
 
                                      26
<PAGE>
 
EXCHANGE AGENT
 
  All executed Letters of Transmittal should be directed to the Exchange
Agent. Harris Trust Company of New York has been appointed as Exchange Agent
for the Exchange Offer. Questions, requests for assistance and requests for
additional copies of this Prospectus or of the Letter of Transmittal should be
directed to the Exchange Agent addressed as follows:
 
By Mail:               Harris Trust Company of New York
                       P.O. Box 1010
                       Wall Street Station
                       New York, N.Y. 10268
                       Attention: Reorganization Department
 
By Hand or Overnight Courier:
                       Harris Trust Company of New York
                       77 Water Street, 4th Floor
                       New York, N.Y. 10004
                       Attention: Reorganization Department
 
Facsimile Transmission:(212) 701-7636
 
Confirm by Telephone:  (212) 701-7624
 
FEES AND EXPENSES
 
  American will not make any payments to brokers, dealers, or others
soliciting acceptances of the Exchange Offer. The principal solicitation is
being made by mail; however, additional solicitations may be made in person or
by telephone by officers and employees of American.
 
  The estimated cash expenses to be incurred in connection with the Original
Offering and the Exchange Offer will be paid by American and are estimated in
the aggregate to be approximately $600,000, which includes fees and expenses
of the Exchange Agent, accounting, legal, printing, and related fees and
expenses.
 
TRANSFER TAXES
 
  Holders who tender their Old Preferred Stock for exchange will not be
obligated to pay any transfer taxes in connection therewith, except that
holders who instruct American to register shares of New Preferred Stock in the
name of, or request that shares of Old Preferred Stock not tendered or not
accepted in the Exchange Offer be returned to, a person other than the
registered tendering holder will be responsible for the payment of any
applicable transfer tax thereon.
 
                                      27
<PAGE>
 
                                USE OF PROCEEDS
 
  American will not receive any cash proceeds upon consummation of the
Exchange Offer.
 
  The net proceeds from the sale of the Old Preferred Stock were used
initially to repay indebtedness under the Credit Agreements, and thereafter
were used, along with borrowings under the Credit Agreements and proceeds from
certain asset dispositions described herein, to finance the consummation of
the EZ Merger and the remaining acquisitions and obligations included in the
American Probable Transactions. American may also utilize borrowings under the
Credit Agreements to finance, among other things, acquisitions of additional
radio stations. However, American has no binding agreements or letters of
intent with respect to any such acquisition other than as described elsewhere
in this Prospectus. As of December 31, 1996, there was an aggregate of
approximately $154.0 million outstanding under American's previous credit
agreements. After giving effect to the American Pro Forma Transactions, the
Original Offering and the use of the proceeds thereof, as if each of the
foregoing had occurred on December 31, 1996, there would have been
approximately $195.9 million of borrowings outstanding under the Credit
Agreements. Giving further effect to the American Probable Transactions that
were not part of the American Pro Forma Transactions, there would have been
approximately $364.0 million of borrowings outstanding under the Credit
Agreements. See "Capitalization".
 
                                      28
<PAGE>
 
                                CAPITALIZATION
 
  The following table sets forth the actual and pro forma capitalization of
American after giving effect to (a) the American Pro Forma Transactions and
(b) in addition, the Original Offering and the use of the proceeds thereof and
the Exchange Offer (assuming 100% acceptance), as if each had occurred on
December 31, 1996.
 
<TABLE>
<CAPTION>
                                                     DECEMBER 31, 1996
                                            ------------------------------------
                                                               PRO FORMA
                                                       -------------------------
                                                                     AFTER THE
                                                                      ORIGINAL
                                                         AMERICAN   OFFERING AND
                                                        PRO FORMA     EXCHANGE
                                            HISTORICAL TRANSACTIONS    OFFER
                                            ---------- ------------ ------------
                                                       (IN THOUSANDS)
<S>                                         <C>        <C>          <C>
Cash and cash equivalents.................   $ 10,447   $   13,500   $   13,500
                                             ========   ==========   ==========
Long-term debt, including current
 portion(1):
 Borrowings under credit facilities.......   $154,000   $  388,322   $  195,922
 American-EZ Notes(2).....................                 150,000      150,000
 American Notes(3)........................    173,665      173,665      173,665
 Other long-term debt.....................      3,007        3,007        3,007
                                             --------   ----------   ----------
   Total long-term debt...................    330,672      714,994      522,594
                                             --------   ----------   ----------
New Preferred Stock offered hereby(4)(5)..        --           --       200,000
                                             --------   ----------   ----------
Stockholders' equity(5):
 Preferred Stock:
 Convertible Preferred Stock ($137.5
  million aggregate liquidation
  preference).............................          1            1            1
American Common Stock:
 Class A Common Stock.....................        151          234          234
 Class B Common Stock.....................         47           47           47
 Class C Common Stock.....................         13           13           13
Additional paid-in capital................    390,731      713,960      706,360
Retained earnings.........................      5,955        5,955        5,955
Other (net)...............................       (735)        (735)        (735)
                                             --------   ----------   ----------
   Total stockholders' equity.............    396,163      719,475      711,875
                                             --------   ----------   ----------
   Total capitalization...................   $726,835   $1,434,469   $1,434,469
                                             ========   ==========   ==========
</TABLE>
- --------
(1) See Notes to Consolidated Financial Statements of American in the American
    10-K and "Indebtedness of American" for additional information regarding
    the components and terms of American's long-term debt. The pro forma
    information includes approximately $47.5 million of long-term debt
    expected to be incurred or assumed to finance the American Pro Forma
    Transactions. See Note (2) below. Approximately $168.1 million of
    additional long-term debt borrowings are expected to be required (on a net
    basis) to finance the American Probable Transactions not included in the
    American Pro Forma Transactions.
(2) At par value which approximates estimated fair value. American has, as
    required, offered to purchase the American-EZ Notes at 101% of their
    principal amount. American intends to borrow any funds required for such
    purpose under the applicable Credit Agreement.
(3) Net of unamortized discount of $1.3 million.
(4) Consists of shares of Old Preferred Stock and New Preferred Stock, $100
    liquidation preference, authorized (3,700,000) and outstanding (2,000,000)
    pro forma for the Original Offering and the Exchange Offer (excluding
    47,391 additional shares issued on April 15, 1997 pursuant to deemed
    dividend payments). Such stock has been reflected at fair value at
    issuance; Initial Purchasers discount and expenses of the Original
    Offering and the Exchange Offer have been offset against additional paid-
    in capital.
(5) Consists of (a) Preferred Stock, par value $.01 per share, authorized,
    10,000,000 shares; 137,500 shares of Convertible Preferred Stock, $1,000
    liquidation preference per share, issued and outstanding (historical and
    pro forma) and (i) shares of Old Preferred Stock and New Preferred Stock
    as shown in note (4); (b) Class A Common Stock, par value $.01 per share,
    authorized 100,000,000 shares; 15,101,022 shares issued and outstanding
    (historical); 23,444,530 shares issued and outstanding (pro forma); (c)
    Class B Common Stock, par value $.01 per share, authorized 15,000,000
    shares; 4,658,096 shares issued and outstanding (historical and pro
    forma); and (d) Class C Common Stock, par value $.01 per share, authorized
    6,000,000 shares; 1,295,518 shares issued and outstanding (historical and
    pro forma).
 
                                      29
<PAGE>
 
             UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL
                            STATEMENTS OF AMERICAN
 
  The following unaudited pro forma condensed consolidated financial
statements of American consist of an unaudited pro forma condensed
consolidated balance sheet as of December 31, 1996 and an unaudited pro forma
condensed consolidated statement of operations for the year ended December 31,
1996. With respect to acquisitions, the pro forma financial information gives
effect only to the Pro Forma Transactions (which means the EZ Merger, the
Hartford Transaction, the HBC Merger (excluding the Omaha stations which are
under an agreement to be sold), the BayCom Transaction and the Baltimore
Transaction) based on their significance in relation to all of the American
Probable Transactions. See "Business--Recent Transactions--Consummated
Transactions". The unaudited pro forma condensed consolidated financial
statements should be read in conjunction with American's consolidated
financial statements and notes thereto, as well as the consolidated financial
statements and notes thereto of EZ and certain businesses that have been or
may be acquired, which are incorporated by reference in this Prospectus. For
purposes of presenting the unaudited pro forma condensed statement of
operations for the year ended December 31, 1996, the pro forma amounts
included for EZ do not give effect to acquisitions either consummated during
1996 or probable of completion during 1997. See Note 3 to the EZ 10-K
incorporated herein by reference. The unaudited pro forma condensed
consolidated financial statements are not necessarily indicative of the
results that would have been reported had such events actually occurred on the
date specified, nor are they indicative of American's future results of
operations.
 
                                      30
<PAGE>
 
                       AMERICAN RADIO SYSTEMS CORPORATION
 
            UNAUDITED PRO FORMA CONDENSED CONSOLIDATED BALANCE SHEET
 
                               DECEMBER 31, 1996
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                 ADJUSTMENTS
                                                                   FOR THE
                                       ADJUSTMENTS                 ORIGINAL
                                           FOR                     OFFERING
                                        PRO FORMA     AMERICAN       AND
                          HISTORICAL TRANSACTIONS(A) PRO FORMA  EXCHANGE OFFER PRO FORMA
                          ---------- --------------- ---------- -------------- ----------
<S>                       <C>        <C>             <C>        <C>            <C>
         ASSETS
Cash and cash
 equivalents............   $ 10,447     $  3,053     $   13,500                $   13,500
Accounts receivable,
 net....................     51,897       23,659         75,556                    75,556
Other current assets....      6,973        5,036         12,009                    12,009
Property and equipment,
 net....................     90,247       51,382        141,629                   141,629
Station investment
 notes(b)...............     69,920                      69,920                    69,920
Intangible assets, net..    493,260      740,998      1,234,258                 1,234,258
Deposits and other
 assets(b)..............     26,064       (4,500)        21,564                    21,564
Net assets held under
 exchange agreement.....     47,495                      47,495                    47,495
                           --------     --------     ----------   ---------    ----------
  Total.................   $796,303     $819,628     $1,615,931   $     --     $1,615,931
                           ========     ========     ==========   =========    ==========
    LIABILITIES AND
  STOCKHOLDERS' EQUITY
Current liabilities,
 excluding current
 portion of long-term
 debt...................   $ 33,770     $ 17,044     $   50,814                $   50,814
Deferred income taxes...     33,205       94,950        128,155                   128,155
Other long-term
 liabilities............      2,149                       2,149                     2,149
Long-term debt,
 including current
 portion(a)(c)..........    330,672      384,322        714,994   $(192,400)      522,594
Minority interest.......        344                         344                       344
Old/New Preferred
 Stock(d)...............                                            200,000       200,000
Stockholders' equity....    396,163      323,312        719,475      (7,600)      711,875
                           --------     --------     ----------   ---------    ----------
  Total.................   $796,303     $819,628     $1,615,931   $       0    $1,615,931
                           ========     ========     ==========   =========    ==========
</TABLE>
 
     See Notes to Unaudited Pro Forma Condensed Consolidated Balance Sheet.
 
                                       31
<PAGE>
 
       NOTES TO UNAUDITED PRO FORMA CONDENSED CONSOLIDATED BALANCE SHEET
 
  (a) The Pro Forma Transactions will be accounted for under the purchase
method of accounting. The following adjustments have been recorded as of
December 31, 1996: (i) American (A) will borrow, after giving effect to the
sale of the Omaha stations, approximately $47.5 million, net and use currently
outstanding escrow deposits to finance the Pro Forma Transactions (other than
the EZ Merger); and (B) borrowed approximately $186.8 million, which included
$114.4 of additional debt and the refunding of approximately $72.4 million of
existing EZ debt, assumed $150.0 million principal amount of American-EZ Notes
and issued approximately 8,343,508 shares of Class A Common Stock valued at
$310.8 million, (based on the closing price of the American Class A Common
Stock during a reasonable period before and after August 5, 1996) in
connection with the consummation of the EZ Merger; (ii) the American-EZ Notes
have been recorded at par value, which approximates estimated fair value, and
effect has not given to American's offer to purchase the American-EZ Notes at
101% of principal amount and accrued interest through May 19, 1997, or
$1,056.31 per $1,000 aggregate principal amount. Estimated fair value may
change upon completion of the offer to purchase (the impact of such offer will
be determined upon consummation of such offer); (iii) the excess of purchase
price over property, plant and equipment and FCC licenses has been recorded in
intangible assets; and (iv) a deferred tax liability has been recorded to
reflect the temporary differences associated with the book and tax basis of
assets acquired. Transaction costs estimated at approximately $5.5 million
have been included in the estimated purchase price allocation. The preliminary
estimates of fair value of property, plant and equipment and FCC licenses may
change upon final appraisal.
 
  (b) Relates to certain American Probable Transactions that are not included
within American Pro Forma Transactions, except for $0.7 million of station
investment notes which were repaid at their principal amount ($1.2 million) in
February 1997. Station investment notes represent American's loans to entities
(or their affiliates) owning stations as follows: Boston--$0.7 million; West
Palm Beach--$9.9 million; Buffalo--$8.0 million; Dayton--$15.6 million; Jensen
Beach--$7.2 million; and Rochester--$28.5 million. Such loans have stated
annual interest rates ranging from 6%-12% or, in certain cases, American's
borrowing rate under the Credit Agreements. Substantially all of the station
investment notes were issued in connection with the prospective acquisitions
of the related stations.
 
  (c) Excludes approximately $168.1 million of additional long-term debt
required (on a net basis) to finance the American Probable Transactions which
are not included in the American Pro Forma Transactions.
 
  (d) Excludes 47,391 additional shares issued on April 15, 1997 pursuant to
deemed dividend payments.
 
                                      32
<PAGE>
 
                       AMERICAN RADIO SYSTEMS CORPORATION
 
       UNAUDITED PRO FORMA CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS
 
                          YEAR ENDED DECEMBER 31, 1996
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                ADJUSTMENTS FOR
                                                                 THE ORIGINAL
                                      ADJUSTMENTS                  OFFERING
                                     FOR PRO FORMA   AMERICAN         AND
                         HISTORICAL TRANSACTIONS(A)  PRO FORMA  EXCHANGE OFFER   PRO FORMA
                         ---------- ---------------  ---------  ---------------  ---------
<S>                      <C>        <C>              <C>        <C>              <C>
Net revenues............  $178,019     $141,493      $319,512                    $319,512
Operating expenses......   120,004       91,598       211,602                     211,602
Net LMA expenses........     8,128                      8,128                       8,128
Depreciation and
 amortization...........    17,810       42,595        60,405                      60,405
Corporate general and
 administrative
 expenses...............     5,046        1,000         6,046                       6,046
                          --------     --------      --------                    --------
Operating income........    27,031        6,300        33,331                      33,331
                          --------     --------      --------                    --------
Other (income) expense:
 Interest expense, net..    16,762       42,315        59,077      $(16,881)(c)    42,196
 (Gains) losses on sale
  of assets, net........       308                        308                         308
                          --------     --------      --------      --------      --------
  Total other (income)
   expense..............    17,070       42,315        59,385       (16,881)       42,504
                          --------     --------      --------      --------      --------
Income (loss) before
 income taxes...........     9,961      (36,015)      (26,054)       16,881        (9,173)
Provision (benefit) for
 income taxes...........     4,826      (14,120)(b)    (9,294)        6,921 (b)    (2,373)
                          --------     --------      --------      --------      --------
Net income (loss).......     5,135      (21,895)      (16,760)        9,960        (6,800)
Preferred stock
 dividends..............    (4,973)                    (4,973)      (22,750)(d)   (27,723)
                          --------     --------      --------      --------      --------
Net income (loss)
 applicable to common
 stockholders...........  $    162     $(21,895)     $(21,733)     $(12,790)     $(34,523)
                          ========     ========      ========      ========      ========
</TABLE>
 
      See Notes to Unaudited Pro Forma Condensed Consolidated Statement of
                                  Operations.
 
                                       33
<PAGE>
 
              NOTES TO UNAUDITED PRO FORMA CONDENSED CONSOLIDATED
                            STATEMENT OF OPERATIONS
 
  The unaudited pro forma condensed consolidated statement of operations for
the year ended December 31, 1996 gives effect to the EZ Merger, the Hartford
Transaction, the HBC Merger (excluding the Omaha stations which are under an
agreement to be sold), the BayCom Transaction and the Baltimore Transaction
(collectively, the Pro Forma Transactions), as if each of the foregoing had
occurred on January 1, 1996.
 
  (a) To record the results of operations for the Pro Forma Transactions. The
results of operations have been adjusted to (i) reverse historical interest
expense of $25.9 million and $1.3 million of interest income recorded on the
Hartford Transaction station investment notes and (ii) record interest expense
of $41.0 million for the year ended December 31, 1996, as a result of
approximately $161.9 million of additional debt and the refunding of
approximately $72.4 million of existing EZ debt, both bearing interest at an
assumed rate of 8.75%, and the assumption of $150.0 million principal amount
of American-EZ Notes bearing interest at 9.75%, all to be incurred in
connection with the Pro Forma Transactions. Each 1/4% change in the interest
rate applicable to the change in floating rate debt would increase or
decrease, as appropriate, the net adjustment to interest expense by
approximately $0.6 million.
 
  The results of operations have also been adjusted to reverse historical
depreciation and amortization expense of $13.4 million for the year ended
December 31, 1996 and record depreciation and amortization expense of $42.6
million for the year ended December 31, 1996 based on estimated allocations of
purchase prices. Depreciation expense for property, plant and equipment
acquired has been determined based on an average life of ten years. Costs of
acquired FCC licenses and goodwill for the transactions are amortized over 25
and 40 years, respectively. The preliminary estimates of the fair value of
property, plant and equipment, FCC licenses and goodwill may change upon final
appraisal.
 
  Corporate general and administrative expenses of the prior owners have not
been carried forward into the pro forma condensed financial statements as
these costs represent duplicative facilities and compensation to owners and/or
executives not retained by American. Because American maintains a separate
corporate headquarters which provides to all stations services substantially
similar to those represented by these costs, they are not expected to recur
following acquisition. After giving effect to an estimated $1.0 million of
incremental costs, American believes that it has existing management capacity
sufficient to provide such services without incurring additional incremental
costs.
 
  The following table sets forth the historical results of operations for the
Pro Forma Transactions for the periods in which they were not owned by
American for the year ended December 31, 1996.
 
<TABLE>
<CAPTION>
                             EZ      HARTFORD    HBC      BAYCOM     BALTIMORE   PRO FORMA
                           MERGER   TRANSACTION MERGER  TRANSACTION TRANSACTION ADJUSTMENTS  TOTAL
                          --------  ----------- ------  ----------- ----------- ----------- --------
<S>                       <C>       <C>         <C>     <C>         <C>         <C>         <C>
Net revenues............  $105,963    $4,117    $8,371    $ 9,789     $13,253               $141,493
Operating expenses......    68,084     2,594     4,762      7,358       8,800                 91,598
Depreciation and
 amortization...........     9,104       129       374      2,012       1,829    $ 29,147     42,595
Merger costs............    10,433                                                (10,433)
Corporate general and
 administrative.........     3,808               1,913        441       1,943      (7,105)     1,000
                          --------    ------    ------    -------     -------    --------   --------
Operating income
 (loss).................    14,534     1,394     1,322        (22)        681     (11,609)     6,300
Other (income) expense..
 Interest expense, net..    20,360               1,395      4,105                  16,455     42,315
 Other expense
  (income)..............       450         7                  (22)        104        (539)
                          --------    ------    ------    -------     -------    --------   --------
Income (loss) from
 operations before
 income taxes...........  $ (6,276)   $1,387    $  (73)   $(4,105)    $   577    $(27,525)  $(36,015)
                          ========    ======    ======    =======     =======    ========   ========
</TABLE>
 
                                      34
<PAGE>
 
  Merger costs of EZ have not been carried forward into the pro forma
condensed financial statements as these costs represent costs incurred by EZ
as a result of the EZ Merger and are not expected to recur following the EZ
Merger. Such costs consist primarily of professional fees, compensation to
employees of EZ and regulatory related costs, including $4.5 million which was
paid pursuant to a license renewal proceeding, satisfactory arrangements with
respect to the station involved were a condition precedent to closing.
 
  (b) To record the tax effect of the pro forma adjustments and impact on
American's estimated effective tax rate. The actual effective tax rate may be
different once the final allocation of purchase price is determined.
 
  (c) Estimated reduction in interest expense from an application of the net
proceeds from the Original Offering at an assumed rate of 8.75%.
 
  (d) Based on an annual dividend rate of 11 3/8% on the Old Preferred Stock
as if the Original Offering had taken place on January 1, 1996.
 
                                      35
<PAGE>
 
                                   BUSINESS
 
GENERAL
 
  American is a national radio broadcasting company committed to acquiring,
developing and operating clusters of complementary radio stations in major and
growing advertising markets. American will be among the five largest radio
groups in the nation owning and/or operating 95 radio stations in 20 markets
across the United States upon consummation of the American Probable
Transations. Consistent with its strategy of operating in the top 60 markets
(with an emphasis on markets ranked 10 through 50), American will, upon such
consummation, own stations in the following markets: Boston, Seattle, St.
Louis, Baltimore, Cincinnati, Portland, Pittsburgh, Sacramento, Charlotte,
Kansas City, Hartford, Austin, Buffalo, Las Vegas, San Jose, West Palm Beach,
Rochester, Dayton, Fresno and Riverside/San Bernardino. Giving effect to the
American Probable Transactions, American station groups ranked first or second
among station operators in radio advertising revenues in 18 of its 20 markets,
based on the Duncan Guide.
 
  American's stations have demonstrated significant same station growth in net
revenues and broadcast cash flow. Growth in net revenues and, to a greater
extent, broadcast cash flow from such same stations is affected by a number of
factors, among the most significant of which are the number of stations
acquired in a particular period, the stage of development of the acquired
stations and the period of time such stations have been operated by American.
Net revenues and broadcast cash flow from stations owned and/or operated by
American as of December 31, 1996 (including for periods prior to their
acquisition by American) increased by 12.1% and 20.7%, respectively, from 1995
to 1996. Giving effect to the American Probable Transactions as though all of
them had been consummated at January 1, 1996, net revenues and broadcast cash
flow in 1996 would have been approximately $360.9 million and $120.7 million,
respectively. See "Summary--Selected Combined Financial Data" and "Unaudited
Pro Forma Condensed Consolidated Financial Statements of American".
 
  Management believes that its substantial same station growth is a result of
a number of factors that include the following:
 
  .   Market Selection. American has targeted markets that offer geographic
      diversity and fast growing economic bases. Five of American's markets
      are among the ten fastest growing U.S. markets and eight are among the
      top 25, as identified by the U.S. Department of Commerce, Bureau of
      Economic Analysis, "Projection of Economic Growth", as of May 1996.
 
  .   Station Groups. American operates at least three FMs in each market
      (other than Austin, Cincinnati, Kansas City and San
      Bernardino/Riverside) and in most markets has developed radio station
      groups with many complementary FM and AM stations. These groups are
      generally composed of a mixture of leading and underperforming stations.
      Management believes this configuration enables American to accelerate
      the growth potential of these station groups, while reducing the risks
      associated with launching new formats and undertaking other means of
      improving underperforming radio properties. Management estimates that
      approximately one quarter of its stations, assuming consummation of the
      American Probable Transactions, have negligible or negative broadcast
      cash flow. American seeks to improve the performance of these stations
      by leveraging the enhanced management, programming, promotional and
      operational resources available to multiple station groups.
 
      American also believes that the operation of station clusters may: (i)
      enhance net revenue growth by increasing the appeal of the stations to
      advertisers and enabling such stations to compete more effectively with
      other advertising media; (ii) achieve operating efficiencies by
      consolidating broadcast facilities, eliminating duplicative management
      and staff functions and reducing overhead; (iii) enhance the
      competitiveness of American in bidding for top quality talent; (iv)
      facilitate cross promotion, sponsorship of larger events and increased
      spending on television, outdoor and other advertising designed to
      establish "brand" identity for the station cluster; (v) support more
      extensive and specialized market research; and (vi) promote the
      development of enhanced client services for advertisers.
 
                                      36
<PAGE>
 
  .    Station Operating Strategies. American views itself as a product
       oriented company that seeks to establish and maintain listener loyalty
       through sound audience research, employment of high profile
       personalities, strong production values, and tailored marketing
       approaches that vary according to market, format and individual station
       need. American also seeks to assemble a large group of stations in each
       market, enabling it to attract a broad range of demographic audiences
       and to respond to differing needs of individual advertisers. Through
       these and other strategies American seeks to increase its share of
       total advertising dollars, targeting in particular its two most direct
       competitors, newspapers and broadcast television. These strategies have
       enabled American to build station groups with leading revenue and
       audience market share.
 
  .    Diversified Programming. American's programming diversification has
       helped to insulate its performance from changes in listening
       preferences. American currently programs 18 different formats at its
       stations, a substantial increase from the six formats programmed in
       January 1994.
 
  .    Management Structure. In order to manage a national group of radio
       stations and to provide a strong operational focus to each market,
       American has divided its markets into three groups, with a highly
       experienced Co-Chief Operating Officer responsible for each. While the
       management structures in each market vary according to the number of
       stations, their stage of development, and other factors, in most
       markets overall responsibility for the market is assigned to a single
       individual market leader. American believes this structure facilitates
       the coordination of programming and selling and reduction of operating
       expenses, while maintaining accountability for individual station
       performance. Individual market leaders each report to a Co-Chief
       Operating Officer, who in turn report to Steven B. Dodge, Chairman and
       Chief Executive Officer.
 
OPERATING PHILOSOPHY
 
  American's objective is to operate leading radio station groups in each of
its markets as measured by audience ratings and revenue share. American
operates its stations in clusters to (i) enhance growth by increasing the
appeal of American's stations to advertisers and enabling such stations to
compete more effectively with other advertising media and (ii) achieve
operating efficiencies by consolidating broadcast facilities, eliminating
duplicative management and staff positions and reducing overhead. Management
believes that station groups create the opportunity to develop leadership
positions within American's markets, which significantly improve its stations'
appeal to advertisers and their revenue and profit potential. American
believes that group, rather than individual station, results present a more
meaningful measure of performance because a significant percentage of revenues
in most of its markets is earned by companies owning multiple stations.
Consistent with such belief, American seeks to enhance the overall performance
of its station groups through means such as complementary programming and
joint marketing of its individual stations.
 
  To maintain or improve its position in each market, American combines
extensive research with an assessment of its competitors' vulnerabilities in
order to identify specific audience opportunities within each market. American
then tailors the programming, marketing and promotion of each station to
maximize its appeal to its target audience. Management seeks to create a
distinct and marketable personality for each of its stations in order to
enhance audience share and listener loyalty. To help achieve this objective,
American employs and promotes distinctive, high-profile on-air personalities
in many of its stations.
 
  American's radio stations employ a number of programming formats, each of
which is designed to appeal to a specific target audience in each local
market. American's portfolio of stations is diversified in terms of format,
target audience and geographic location. Management believes this
diversification helps to insulate its performance from potential local
economic downturns and changes in listening preferences. American's station
groups are, in many instances, composed of stations in different phases of
development. Management believes this configuration enables it to maximize the
growth potential of those station groups, while reducing the risks associated
with launching new formats and undertaking other means of improving
underperforming properties.
 
 
                                      37
<PAGE>
 
  Management employs an operating philosophy designed to achieve market
leadership which includes: (i) owning multiple stations and establishing
program formats within its individual markets that target specific diverse
demographics, (ii) developing and maintaining popular programming to attract a
large share of the target audience, (iii) promoting its radio stations
frequently to develop high awareness among its target listeners,
(iv) leveraging the skills of experienced general managers with strong local
market knowledge, and (v) developing well trained client-oriented local sales
professionals.
 
  Strategic Programming of Station Groups. Giving effect to the American
Probable Transactions, American will own and/or operate at least three FM
stations in each of its markets other than Austin, Cincinnati, Kansas City and
Riverside/San Bernardino (in each of which it owns two FM stations). American
customizes the programming of its groups to maximize their combined audience
share and revenue potential. American does not utilize a predetermined formula
to target demographic niches; instead, American believes that each market has
individual characteristics and should be evaluated independently.
 
  American believes that clustering of radio stations promotes the development
of specialized or "niche" formats that can effectively expand the overall
demographic reach of a station group while delivering new target audiences to
advertisers. American believes that the flexibility to program niche formats
provides station groups with potential competitive advantages generally
unavailable to stations operated on a stand-alone basis. In markets where one
American station is a leader in a demographic group, American may use its
other stations to expand audience reach. American may, under certain
circumstances, utilize a strongly performing group to enhance the relative
position of one of its leading stations by initiating a format competition
between one of its other stations and another leading station in the market.
 
  Popular Programming. American tailors the programming, marketing and
promotion of each station to maximize its appeal to that station's target
audience and to create a distinct and marketable personality for each station.
An important element of this approach is American's strong preference for
employing and promoting high profile and marketable on-air personalities,
especially in the morning drive day part, which is 6-10 a.m. In order to
adjust to developing trends and identify new opportunities, American conducts
frequent market research to provide its stations with the information
necessary to refine and improve their programming to identify and exploit new
audience opportunities.
 
  Aggressive Station Promotion. American's stations typically engage in
significant local promotional activities, including extensive community
involvement. American's stations also typically advertise on local television,
utilize billboards and print media, participate in telemarketing and direct
mailings and sponsor local contests, concerts and events. In Boston, WBMX-FM
sponsors events such as "MIX Fest", WRKO-AM sponsors "Taste of Boston" and
WEEI-AM sponsors "The Hot Dog Safari". In Hartford, WZMX-FM sponsors an annual
"penny pitch" charity event designed to raise funds for the Hartford
Children's Hospital. See
"--Community Involvement". The operation of radio clusters also creates unique
cross-promotional opportunities and enables American, through the broader
combined reach of its station groups, to compete more effectively with
television stations and newspapers in sponsoring local community events,
employment fairs and trade shows. American believes that such sponsorships may
provide radio station group owners with opportunities to realize substantial
"non-traditional" radio revenues. American has also invested in database
marketing programs with the objective of developing more personal contact with
listeners.
 
  Strong Local Management and Sales Effort. In each of its markets, American
employs a highly experienced general manager who is responsible for the
performance of the stations in his or her market. The general managers of
American's stations have an average of six years experience as general
managers and an average of more than twenty years experience in the radio
industry. A portion of each general manager's compensation is dependent on the
financial results of the stations in his or her markets, aligning the
manager's goals with those of American. As incentive compensation, American's
general managers and executive officers have been granted options to purchase
shares of Common Stock which are subject to vesting provisions over a five-
year period. Since a significant portion of American's revenues are generated
from local advertising, American also focuses on developing a high quality,
client-oriented local sales force at each radio station. Such
 
                                      38
<PAGE>
 
a sales force allows American to establish and maintain direct relationships
with advertisers and capture significant advertising dollars.
 
ACQUISITION STRATEGY
 
  American intends to continue to pursue the acquisition of additional radio
stations in new and existing markets in order, among other things, to
implement its business strategy discussed above and to achieve greater
geographic diversification. American expects to concentrate these efforts in
markets ranked in the top 60 (with an emphasis on markets ranked 10 through
50) in terms of radio advertising revenues. When evaluating acquisition
opportunities in new markets, American also assesses the potential to attract
listeners and to increase audience share and to generate strong cash flow
growth through improved programming, marketing, sales and operating
efficiencies. While American intends to continue to focus its principal
acquisition efforts on radio stations, it also intends to continue to expand
its ownership and operation of communications towers and to explore the
syndication of radio programming. See "--Recent Transactions--Tower
Subsidiary".
 
  American intends to pursue acquisitions opportunistically and to evaluate
both market and station characteristics.
 
  Market Selection Considerations. American intends to make acquisitions in
markets that provide the opportunity to expand audience and revenue. In
assessing potential acquisitions, American evaluates the existence of
underserved audience segments and competitors with perceived vulnerabilities.
In addition, American considers the potential to acquire two or more FM
stations in the market. American believes the potential to acquire two or more
FM stations is essential to its ability to compete with electronic and print
media, expand audience, gain broad acceptance with advertisers, and achieve
sustainable growth in profitability. American will also consider the
acquisition of AM stations which it believes have profit potential and whose
ownership will enhance American's overall appeal to advertisers.
 
  American seeks to acquire stations in markets that have already experienced
or are poised for significant growth activity. American also closely examines
the state of the economy in its potential markets, specifically the size,
historical growth rates and projected future growth rates of the market's
radio advertising revenue, population and retail sales.
 
  Station Selection Considerations. Within markets meeting the above criteria,
American intends to acquire stations in varying stages of development, based
primarily on management's evaluation of the target station's facilities,
including the relative strength and market coverage of its signal, and its
past and current operating performance. When entering a new market, American
generally plans to employ a "core station" strategy, acquiring a profitable
station, thereby reducing the risk of entry. Having established its presence
in a new market, American may then continue its selective acquisition of
underperforming stations which generally represent greater growth potential
than well-established and profitable stations. By applying its turnaround
expertise, and leveraging the core station's management and market presence,
American believes that it will be able to promote the development of
underperforming stations and thereby enhance asset value.
 
  Purchase Price Considerations. American has never applied a fixed formula to
determine the purchase price of radio stations. In determining the purchase
price for an acquisition, management places emphasis on multiples of projected
station broadcast cash flow rather than historical measures. This is because
American frequently considers acquisitions of radio stations requiring
significant reconfiguration which have nominal or negative historical station
broadcast cash flow.
 
  American believes that its acquisition strategy, if properly implemented,
could have a number of benefits, including the following: (i) diversification
of revenues and broadcast cash flow across a greater number of stations and
markets, (ii) more efficient utilization of its senior management team, (iii)
enhanced appeal to top industry management talent, and (iv) increased overall
scale which should broaden the range of and facilitate American's capital
raising activities. See "Risk Factors--Acquisition Strategy".
 
                                      39
<PAGE>
 
  Although American has had discussions with a number of other radio operators
concerning potential acquisitions, it is not currently a party to any binding
agreement or letter of intent relating to any such acquisition, except as
described elsewhere in this Prospectus.
 
HISTORY
 
  On November 1, 1993 the American Reorganization became effective with the
merger of four radio broadcasting entities: Stoner Broadcasting Systems, Inc.
("Stoner"), Atlantic Radio, L.P. ("Atlantic"), Multi Market Communications,
Inc. ("Multi Market") and Boston AM Radio Corporation ("Boston AM")
(collectively, the "American Predecessor Entities"). As a result, American
owned and operated 11 FM and seven AM stations in eight markets consisting of
Boston, Hartford, Buffalo, Rochester, Dayton, Des Moines, Binghamton and
Louisville. Between November 1, 1993 and January 1, 1996, American entered
three new markets, Baltimore, Austin and West Palm Beach, and disposed of all
of its stations in Des Moines, Binghamton and Louisville. During such period,
American also agreed to purchase or acquired options to purchase additional
stations in several existing and new markets. See Notes to the Consolidated
Financial Statements of American in the American 10-K.
 
RECENT TRANSACTIONS
 
  Consistent with American's acquisition strategy, since January 1, 1996,
American has consummated or has pending the following transactions.
 
 Consummated Transactions
 
  EZ Merger: Pursuant to the consummation of the EZ Merger on April 4, 1997,
American acquired 18 FM and six AM stations in eight markets: Seattle, St.
Louis, Pittsburgh, Sacramento, Charlotte, Kansas City, New Orleans and
Philadelphia, assumed approximately $222.4 million of long-term debt, paid
approximately $108.9 million and issued approximately 8.3 million shares of
Class A Common Stock to the EZ stockholders. The foregoing station information
does not give effect to the consummation of certain prospective EZ
transactions which are included in the American Probable Transactions. See "--
Seattle" below and "--Pending Acquisitions and Dispositions--Seattle", "--
St. Louis" and "--Charlotte".
 
  Marlin Transaction: In May 1996, American consummated the transactions
contemplated by a merger agreement (the "Marlin Transaction") with Marlin
Broadcasting, Inc. ("Marlin"). American acquired WFLN- FM in Philadelphia,
WQRS-FM in Detroit and WTMI-FM in Miami for an aggregate purchase price of
approximately $58.5 million, together with the assumption of approximately
$9.0 million of long-term debt which was paid in full at closing. The
principal stockholder of Marlin immediately thereafter acquired WTMI- FM from
American for approximately $18.0 million. American retained certain
Philadelphia real estate and tower assets valued at approximately $1.5
million. In February 1997, American exchanged the Philadelphia station for two
stations serving Sacramento and sold the Detroit station for approximately
$20.0 million in cash, to an unaffiliated party which had been programming and
marketing the Philadelphia and Detroit stations under LMAs. See "--Sacramento"
below.
 
  Boston, Worcester: In January 1997, American acquired WAAF-FM and WWTM-AM in
Worcester, Massachusetts for approximately $24.8 million in cash. American
began programming and marketing the stations pursuant to an LMA in August
1996.
 
  Seattle: In April 1997, American (as successor to EZ) exchanged WEZB-FM,
WRNO-FM and WBYU-AM, serving New Orleans, for KBKS-FM (formerly KCIN-FM) and
KRPM-AM, serving Seattle. The parties began programming and marketing the
stations to be acquired by each pursuant to separate LMAs in March 1996.
 
 
                                      40
<PAGE>
 
  Baltimore: In October 1996, American acquired WBGR-AM serving Baltimore for
a purchase price of approximately $2.8 million.
 
  In February 1997, American acquired WWMX-FM and WOCT-FM serving Baltimore
for approximately $90.0 million. American began programming and marketing the
stations pursuant to an LMA in November 1996.
 
  Cincinnati: In April 1997, American exchanged WVOR-FM, WHAM-AM and WHTK-AM
serving Rochester, together with $16.0 million, for WKRQ-FM serving
Cincinnati. See "--Rochester" below.
 
  In an unrelated transaction, in January 1997, American merged with an
unaffiliated corporation pursuant to which it became a party to an agreement
to acquire WGRR-FM serving Cincinnati, for approximately $30.0 million in
cash. In addition, American issued 18,341 shares of Class A Common Stock
pursuant to such merger. The acquisition of WGRR-FM is expected to be
consummated in the second quarter of 1997.
 
  Portland, Oregon: In July 1996, American consummated a merger (the "HBC
Merger") pursuant to which Henry Broadcasting Company ("HBC") merged into
American. Pursuant to the HBC Merger, American issued an aggregate of
1,879,034 shares of Class A Common Stock valued at $64.0 million, paid
approximately $10.4 million in cash, and assumed long-term debt of
approximately $37.3 million which was paid in full at closing. As part of a
related transaction, American acquired certain real estate used in the
business of HBC for approximately $2.0 million and obtained a five-year option
to acquire certain other real estate for approximately $1.0 million. HBC owned
an aggregate of twelve stations, of which nine were included as part of the
HBC Merger as follows: KUFO-FM and KUPL-AM (formerly KBBT-AM) in Portland,
Oregon, KYMX-FM and KCTC-AM in Sacramento, KGOR-FM and KFAB-AM in Omaha and
KSKS-FM, KKDJ-FM and KMJ-AM in Fresno.
 
  In July 1996, American acquired KBBT-FM (formerly KDBX-FM) for a purchase
price of approximately $14.0 million. As part of such arrangement, American
granted the seller the right, effective at any time after August 31, 1998, to
cause American to exercise its option to acquire WBNW-AM in Boston for $6.0
million and to sell such station to the seller of KBBT-FM. See Notes to
Consolidated Financial Statements of American in the American 10-K for
information concerning that option. In February 1997, such seller and the
owner of WBNW-AM consummated a purchase and sale agreement with respect to
such station.
 
  In August 1996, American acquired KUPL-FM and KKJZ-FM, together with two FM
stations in San Jose (the "BayCom Transaction"), for an aggregate purchase
price of approximately $103.0 million.
 
  Sacramento: As part of the HBC Merger, American acquired KYMX-FM and KCTC-AM
in Sacramento in July 1996. See "--Portland, Oregon" above.
 
  In July 1996, American acquired KSTE-AM for a purchase price of
approximately $7.25 million. American had been programming and marketing this
station pursuant to an LMA since April 1996. In March 1997, American
consummated a station asset swap agreement to exchange KSTE-AM as part of the
acquisition of three stations serving West Palm Beach. The other party to the
agreement began programming and marketing KSTE-AM pursuant to an LMA in August
1996. See "--West Palm Beach" below.
 
  In September 1996, American acquired KSSJ-FM for a purchase price of
approximately $14.0 million. American had been programming and marketing the
station pursuant to an LMA since July 1996. See "--Pending Acquisitions and
Dispositions--Portland" for information concerning the proposed exchange of
KSSJ-FM.
 
  In February 1997, American consummated an agreement to exchange the
Philadelphia station which it acquired as part of the Marlin Transaction for
KSFM-FM and KMJI-AM serving Sacramento. As part of such transaction (the
"Secret Transaction"), American sold the Detroit station acquired as part of
the Marlin Transaction to the owner of the Sacramento stations for
approximately $20.0 million. American began programming and marketing the
Sacramento stations under an LMA, and the prospective acquiror of the
 
                                      41
<PAGE>
 
Philadelphia and Detroit stations began programming and marketing those
stations under LMAs, in June 1996. In April 1997, American sold KMJI-AM for
approximately $1.5 million in cash.
 
  In March 1997, American acquired KXOA-FM, KQPT-AM (formerly KXOA-AM) and
KQPT-FM serving Sacramento for approximately $50.0 million in cash. American
has been programming and marketing the stations pursuant to an LMA in August
1996. See "--Pending Acquisitions and Dispositions--Sacramento" for
information with respect to the sale of KXOA-FM, including the transfer in
April 1997 to an independent and insulated trustee (under a trust for the
benefit of American).
 
  Subsequent to October 1996, American received Second Requests for additional
information with respect to each of the pending American transactions which
involve, in whole or in part, Sacramento-area radio stations from the
Antitrust Division. As a consequence of ongoing discussions with the Antitrust
Division to address those concerns, in February 1997, American entered into
the Sacramento Consent Decree with the Justice Department pursuant to which it
agreed, among other things, to divest its ownership of KSSJ-FM. The Sacramento
Consent Decree also provides that, in the event a class B FM license has not
been issued to KSSJ-FM prior to January 1, 1998, the Justice Department shall
have the right to require American to divest a different class B FM station
serving Sacramento. American believes that the class B FM license will be
granted to KSSJ-FM prior to December 31, 1997, although there can be no
assurance that such grant will occur. The Sacramento Consent Decree is subject
to approval by the United States District Court for the District of Columbia
and a sixty-day public comment period. In the unlikely event that the District
Court does not approve the Sacramento Consent Decree, the Antitrust Division
or others could take action under the antitrust laws to enjoin or otherwise
challenge the Sacramento Transactions. In such event, there can be no
assurance that such a challenge will not be made or, if made, will not be
successful. See "--Pending Acquisitions and Dispositions--Portland" for
information concerning the proposed exchange of KSSJ-FM.
 
  Hartford: In May 1996, American consummated the acquisition of WTIC-FM and
WTIC-AM in Hartford. In August 1995, American had entered into a series of
transactions (the "Hartford Transaction") with the owner of those stations and
certain affiliates, pursuant to which, among other things, American agreed to
purchase the assets of those stations for approximately $39.0 million,
including approximately $1.1 million of working capital and an obligation to
make payments aggregating $8.5 million pursuant to a consulting and non-
competition agreement with an affiliate of the owner of the stations. Also as
part of the Hartford Transaction, American paid $1.0 million for a two-year
option to purchase for $1.00 the New England Weather Service (which provides
weather information to subscribers). Because American was prevented under the
then current FCC regulations from acquiring these stations, it loaned an
aggregate of $35.5 million to the owner of such stations and an affiliate
thereof and made a $2.0 million escrow deposit. A portion of the loans was
used to finance the acquisition of the stations and the balance was used to
satisfy American's obligations under the consulting and non-competition
agreement. The Company also paid $3.5 million to purchase the tower of one of
the stations in October 1995.
 
  In December 1996, American sold WNEZ-AM serving New Britain, Connecticut for
approximately $0.7 million.
 
  Austin: In February 1997, American exercised its option to acquire, and in
March 1997 acquired, KAMX-FM, KKMJ-FM and KJCE-AM, serving Austin, Texas for
approximately $28.7 million. American commenced programming and marketing the
stations pursuant to an LMA in August 1995.
 
  Las Vegas: In July 1996, American acquired KMXB-FM (formerly KJMZ-FM) for
approximately $8.0 million. American had been programming and marketing the
station pursuant to an LMA since April 1996.
 
  In July 1996, American acquired KLUC-FM and KXNO-AM for approximately $11.0
million.
 
  In September 1996, American acquired KXNT-AM (formerly KVEG-AM) for
approximately $1.9 million. American had been programming and marketing this
station pursuant to an LMA since May 1996.
 
 
                                      42
<PAGE>
 
  In October 1996, American acquired KMZQ-FM and KXTE-FM (formerly KFBI-FM)
for a purchase price of approximately $28.0 million. American began
programming and marketing the stations pursuant to an LMA in May 1996. As part
of such transaction, American paid an additional $0.2 million to acquire the
seller's right (and obligation) to purchase KXNT-AM for approximately $1.9
million which, as noted above, it did in September 1996.
 
  Buffalo: In August 1996, American acquired WSJZ-FM in Buffalo for a purchase
price of approximately $12.5 million. This station had been programmed and
marketed by American pursuant to an LMA since April 1996.
 
  San Jose: As part of the BayCom Transaction, American acquired KSJO-FM and
KUFX-FM in August 1996. See "--Portland, Oregon" above.
 
  In February 1997, American acquired KBAY-FM and KKSJ-AM serving San Jose for
approximately $31.0 million in cash. American began programming and marketing
the stations pursuant to an LMA in August 1996. See "--Pending Acquisitions
and Dispositions--Portland" for information concerning the proposed exchange
of KBAY-FM and "--San Jose" for information concerning the proposed sale of
KKSJ-AM.
 
  West Palm Beach: In March 1997, American exchanged KSTE-AM serving
Sacramento plus $33.0 million in cash for WEAT-FM, WEAT-AM and WOLL-FM serving
West Palm Beach. American began programming and marketing the West Palm
stations pursuant to an LMA in August 1996. See "--Pending Acquisitions and
Dispositions--West Palm Beach" for information concerning the proposed sale of
WOLL-FM, WEAT-AM and two other West Palm Beach stations.
 
  Omaha: As part of the HBC Merger, American acquired KGOR-FM and KFAB-AM in
Omaha in July 1996. See "--Portland, Oregon" above. See also "--Pending
Acquisitions and Dispositions--Omaha" below for information concerning
proposed sale of these stations.
 
  Rochester: In February 1997, American acquired two FM (WVOR-FM and WPXY-FM)
and two AM (WHAM-AM and WHTK-AM) stations serving the Rochester market for a
purchase price of approximately $31.5 million including working capital (the
"Rochester Acquisition"). American used the loans which it had made in July
1996 to the owner of the Rochester stations to be acquired of approximately
$28.5 million, together with an escrow deposit, to finance the acquisition. On
May 17, 1996, American and the seller had received Second Requests for
additional information from the Antitrust Division. American engaged in
ongoing negotiations with the Antitrust Division in an effort to reach a
settlement of the matter and as a result of those negotiations, on October 24,
1996, American and the seller entered into a consent decree with the Antitrust
Division and the Attorney General of the State of New York (the "Rochester
Consent Decree"), pursuant to which, among other things, American could
consummate the Rochester Acquisition. However, the Rochester Consent Decree
required it to divest WHAM-AM and WVOR-FM. As part of the Rochester Consent
Decree, American agreed not to acquire any additional stations in the
Rochester market, other than, with certain specified exceptions, one Class A
FM station which it acquired in April 1997.
 
  In December 1996, pursuant to the Rochester Consent Decree, American entered
into an asset swap agreement pursuant to which it agreed to exchange WHAM-AM,
WVOR-FM and WHTK-AM, together with $16.0 million, for WKRQ-FM serving
Cincinnati. The exchange was consummated in April 1997. Pursuant to the
Rochester Consent Decree, American terminated the joint sales agreement with,
and assigned its option to purchase, another FM station in Rochester to the
party with which it exchanged Rochester stations.
 
  In April 1997, American acquired WZNE-FM (formerly WAQB-FM), a newly
licensed Class A FM station for approximately $3.5 million.
 
  Fresno: As part of the HBC Merger, American acquired KSKS-FM, KKDJ-FM and
KMJ-AM in July 1996. See "--Portland, Oregon" above.
 
 
                                      43
<PAGE>
 
  In December 1996, American acquired KNAX-FM and KVSR-FM (formerly KRBT-FM)
in Fresno for approximately $11.0 million in cash. American began programming
and marketing the stations pursuant to an LMA in August 1996.
 
  In April 1997, American acquired KOQO-AM and KOQO-FM for approximately $6.0
million in cash. American had been programming and marketing the stations
pursuant to an LMA in August 1996.
 
  Dayton: In February 1997, American acquired WXEG-FM for approximately $3.6
million, using the loans described below to finance the purchase. In December
1995, American had loaned approximately $1.4 million to the buyer to finance
the acquisition of WXEG-FM and purchased from Mr. Steven B. Dodge, Chairman of
the Board, President and Chief Executive Officer of American, interim loans of
approximately $2.2 million (including accrued interest) which he had made to
the seller of the station and which had been assumed by the new owner of the
station.
 
  In February 1997, American acquired WLQT-FM and WBTT-FM for approximately
$12.0 million. American had an option to acquire these stations which, because
of then existing FCC regulations, it had assigned to Palm Beach Radio
Broadcasting, Inc. ("Palm Beach Broadcasting"). American loaned Palm Beach
Broadcasting approximately $12.0 million to finance the original acquisition
(which occurred in March 1996) and purchased the stations in February 1997,
using the loans to do so.
 
  All of the Dayton stations had been programmed and marketed by American
pursuant to LMAs.
 
 Pending Acquisitions and Dispositions
 
  Seattle: In December 1996, EZ entered into an agreement to sell the assets
of KMPS-AM in Seattle for approximately $2.0 million. Consummation of the
transaction, which is expected to be consummated in the second quarter of
1997, is subject to the approval of the FCC.
 
  St. Louis: In December 1996, EZ entered into an agreement to sell the assets
of KTRS-AM (formerly KSD-AM) in St. Louis for approximately $10.0 million.
Subject to the receipt of FCC approval, the acquisition is expected to be
consummated in the second quarter of 1997.
 
  Portland: In April 1997, American entered into an asset exchange agreement
pursuant to which it will acquire KINK-FM, serving Portland, KBRG-FM, serving
Fremont, California, $2.0 million in cash, and 150,000 shares of Common Stock
of Latin Communications, Inc. in exchange for KBAY-FM, serving San Jose, and
KSSJ-FM, serving Sacramento. The agreement also provides for the exchange of
KINK-FM for KBAY-FM in the event regulatory approval for the exchange of KBRG-
FM and KSSJ-FM cannot be obtained. Subject to certain conditions, including
the receipt of FCC approval and the expiration or earlier termination of the
HSR Act waiting period, and, in the case of the exchange of KSSJ-FM for KBRG-
FM, Justice Department approval of the acquisition pursuant to the Sacramento
Consent Decree, the acquisition is expected to be consummated in third quarter
of 1997.
 
  Pittsburgh: In February 1997, EZ entered into an exchange agreement pursuant
to which it will acquire WDSY-FM. See "--Charlotte" below.
 
  Sacramento: In October 1996, American entered into an agreement to sell
KXOA-FM for approximately $27.5 million in cash. After the expiration of the
HSR Act waiting period, the other party to the agreement began programming and
marketing KXOA-FM pursuant to an LMA in January 1997. As a condition to
consummation of the EZ Merger, KXOA-FM was transferred to an independent and
insulated trustee (under a trust for the benefit of American) and will be held
by the trustee subject to sale pursuant to the foregoing agreement. Subject
to the receipt of FCC approval, the sale from the trustee to the ultimate
purchaser is expected to be consummated in the second quarter of 1997.
 
  See "--Portland" above for information concerning the proposed exchange of
KSSJ-FM.
 
 
                                      44
<PAGE>
 
  Charlotte: In December 1996, EZ entered into an asset exchange agreement
with Evergreen Media Corporation ("Evergreen"), pursuant to which EZ will
exchange WIOQ-FM and WUSL-FM in Philadelphia for WRFX-FM, WPEG-FM, WBAV-FM,
WBAV-AM and WFNZ-AM serving Charlotte, and an asset purchase agreement with
Evergreen to purchase WNKS-FM serving Charlotte for approximately $10.0
million. Consummation of the asset exchange agreement is not conditioned on
consummation of the asset purchase agreement, although consummation of the
asset purchase agreement is conditioned on consummation of the asset exchange
agreement. On September 16, 1996, EZ and American each received a Civil
Investigative Demand from the Antitrust Division requesting certain
documentary materials regarding the purchase, sale, trade or other transfer of
radio stations in Charlotte, North Carolina. As a consequence of ongoing
discussions with the Justice Department, EZ and Evergreen entered into the
Charlotte Consent Decree in February 1997. Pursuant to the Charlotte Consent
Decree, and to comply with the FCC's multiple ownership rules, EZ agreed to
dispose of WRFX-FM (which will, upon consummation of the exchange be
transferred to an independent and insulated trustee). Consummation of the
exchange and the acquisition is expected in May 1997.
 
  In order to comply with the Charlotte Consent Decree and the FCC's multiple
ownership rules, in February 1997, EZ entered into an asset exchange agreement
pursuant to which it would exchange WRFX-FM for WDSY-FM, serving Pittsburgh
and $20.0 million in cash. Consummation of the exchange, which is expected in
the second or third quarter of 1997, is subject to, among other conditions,
the expiration or ealier termination of the HSR Act waiting period, approval
by the Antitrust Division pursuant to the Charlotte Consent Decree and the
consent of the FCC.
 
  Buffalo: In August 1995, American entered into an agreement to purchase
WBLK-FM serving Buffalo for approximately $8.0 million. Because of the then
current FCC regulations, American was not permitted to consummate this
acquisition and assigned its rights to purchase the station, and agreed to
make loans to finance the purchase, to Palm Beach Broadcasting which owns
WPBZ-FM serving West Palm Beach, as a consequence of an earlier assignment to
it by American. The acquisition was consummated by Palm Beach Broadcasting in
March 1996, using the proceeds of loans of approximately $8.0 million from
American to do so. This station is currently being programmed and marketed by
American pursuant to an LMA. American intends to exercise its option to
acquire this station or enter into a merger agreement with Palm Beach
Broadcasting, pursuant to which it will acquire WBLK-FM. Subject to certain
conditions, including the receipt of FCC approval and the expiration or
earlier termination of the HSR Act waiting period, American expects the
acquisition or merger to be consummated in the second half of 1997. See "--
West Palm Beach" below.
 
  San Jose: In March 1997, American entered into an agreement to acquire KEZR-
FM serving San Jose, CA and KLUE-FM serving Soledad, CA for approximately
$24.0 million, of which $20.0 million will be paid in the form of 723,402
shares of Class A Common Stock. Subject to certain conditions, including the
receipt of FCC approval and the expiration or earlier termination of the HSR
Act waiting period, the acquisition is expected to be consummated in the third
quarter of 1997.
 
  In May 1997, American entered into an agreement to sell KKSJ-AM for
approximately $3.2 million in cash. Subject to certain conditions, including
the receipt of FCC approval, the acquisition is expected to be consummated in
the third quarter of 1997.
 
  See "--Portland" above for information concerning the proposed exchange of
KBAY-FM serving San Jose and another station for, among other things, KBRG-FM,
serving Fremont.
 
  West Palm Beach: In August 1995, American purchased options to acquire WSTU-
AM in Stuart and WHLG-FM (which is in the process of constructing a signal
upgrade) in Jensen Beach, the latter of which is in the same radio market as
West Palm Beach, for an aggregate purchase price of approximately $7.2
million. Because American was prevented under then current FCC regulations
from acquiring these stations, it assigned its acquisition rights to Palm
Beach Broadcasting. American loaned Palm Beach Broadcasting approximately $7.2
million to finance the acquisitions. Palm Beach Broadcasting also owns WPBZ-
FM, as a result of an earlier assignment of the right to acquire such station
by American. In November 1996, Palm Beach Broadcasting sold
 
                                      45
<PAGE>
 
WSTU-AM to a third party. American expects to exercise its option to acquire
the stations or to enter into a merger agreement with Palm Beach Broadcasting
pursuant to which it will acquire WHLG-FM and WPBZ-FM and, in addition to the
cancellation of loans (including the $8.0 million loan used to finance the
acquisition of WBLK-FM, serving Buffalo which will also be acquired) in the
aggregate principal amount of $25.3 million, will pay approximately $3.0
million in cash for such stations (and WBLK- FM). Subject to certain
conditions, including the receipt of FCC approval and the expiration or
earlier termination of the HSR Act waiting period, American expects to
consummate the acquisition or merger in the second half of 1997.
  American expects to enter into an agreement in May 1997 to sell WKGR-FM,
WOLL-FM, WBZT-AM and WEAT-AM serving West Palm Beach for approximately $33.0
million. Subject to certain conditions, including the signing of a definitive
agreement, the receipt of FCC approval and the expiration or earlier
termination of the HSR Act waiting period, American expects to consummate the
sale in the third quarter of 1997.
 
 
  In December 1996, American acquired an option to purchase another station
serving West Palm Beach for approximately $11.0 million. American also agreed
to loan up to $150,000 to the party to this option agreement. American intends
to exercise the option and subject to certain conditions, including the
receipt of FCC approval, American expects to consummate the acquisition in the
third quarter of 1997.
 
  Omaha: In October 1996, American entered into an agreement, as amended, to
sell KGOR-FM, KFAB-AM and Business Music Service for approximately $38.0
million. FCC approval has been received and the HSR Act waiting period was
terminated early. American expects to consummate the sale in the second
quarter of 1997.
 
  Rochester: In February 1997, American entered into an agreement to sell
WCMF-AM for approximately $0.7 million. FCC approval has been obtained and
American expects to consummate the acquisition in the second quarter of 1997.
 
  Riverside/San Bernardino: In April 1997, American entered into an agreement
to acquire KFRG-FM, serving the Riverside/San Bernardino market, and KXFG-FM,
serving Sun City, California, for approximately $60.0 million in cash. Subject
to the receipt of FCC approval and expiration or earlier termination of the
HSR Act waiting period, the acquisition is expected to be consummated in the
first quarter of 1998.
 
  Other Transactions
 
  American has entered into letters of intent to acquire five stations (three
FM and two AM) for an aggregate cash purchase price of approximately $13.6
million. For information with respect to letters of intent relating to the
acquisition of affiliated companies owning and managing tower communication
sites, see "--Tower Subsidiary" below. The transactions contemplated by such
letters of intent have not been included in the American Probable Transactions
or reflected in the Pro Forma Financial Information included in this
Prospectus because of, among other things, the absence of definitive purchase
and sale agreements. Further, on May 8, 1997, American entered into an
agreement to acquire KKIK-FM, licensed to Temple, Texas, from Stellar
Communications, Inc. for approximately $3.7 million in cash. The station's
signal is currently being upgraded and the city of license changed to Taylor,
Texas. Upon completion the station will serve, in addition to Temple and
Taylor, the greater Austin radio market. Such transaction has also not been
included in the American Probable Transactions or reflected in the Pro Forma
Financial Information included in this Prospectus. While American continues to
discuss possible acquisitions and exchanges of radio stations, American has no
binding agreements or letters of intent with respect to any such acquisition
or exchange other than as described elsewhere in this Prospectus.
 
  Tower Subsidiary
 
  In July 1995, American organized the Tower Subsidiary to acquire, own and
operate telecommunications antenna sites and towers, principally for other
radio and telecommunications operators. In February 1996, the Tower Subsidiary
acquired Skyline Communications Limited Partnership and Skyline Antenna
Management, Inc. in exchange for an aggregate of 26,989 shares of its Class A
Common Stock, then valued at approximately $0.8 million, $2.2 million in cash
and the assumption of approximately $0.3 million of long-term debt which was
paid in full at closing. Skyline Communications Limited Partnership owns eight
towers, six in West Virginia and two in Northern Virginia. Skyline Antenna
Management, Inc. manages more than 200 antenna sites, primarily in the
northeast region of the United States.
 
 
                                      46
<PAGE>
 
  In April 1996, the Tower Subsidiary acquired BDS Communications, Inc. and
BRIDAN Communications Corporation for 257,495 shares of its Class A Common
Stock, then valued at approximately $7.4 million, and the assumption of $1.7
million of long-term debt of which $1.5 million was paid at closing. BDS
Communications, Inc. owns three towers in Pennsylvania and BRIDAN
Communications Corporation manages or has sublease agreements on approximately
40 tower sites located throughout the mid-Atlantic Region.
 
  In July 1996, the Tower Subsidiary became a member of a limited liability
company with an unaffiliated party relating to the ownership and operation of
a tower site in Needham, Massachusetts. In connection with such agreement,
American Tower advanced approximately $3.8 million and acquired a 50.1%
interest in the limited liability company.
 
  In October 1996, the Tower Subsidiary acquired tower sites located in
Hampton, Virginia and North Stonington, Connecticut for approximately $1.4
million and $1.0 million, respectively.
 
  In November 1996, the Tower subsidiary acquired for approximately $0.3
million a 32.5% interest in a partnership which owns and operates a tower site
in Los Angeles, California.
 
  In November 1996, the Tower Subsidiary entered into the Tower Credit
Agreement with The Toronto-Dominion Bank, as agent, and the banks named
therein relating to a $90.0 million eight-year secured revolving credit
facility.
 
  In December 1996, American transferred its towers and tower sites in
Philadelphia (acquired as part of the Marlin Transaction and not included in
the Secret Transaction) and in Peabody, Massachusetts to the Tower Subsidiary.
 
  In December 1996, the Tower Subsidiary entered into letters of intent with
two entities which are affiliated with each other, to acquire tower sites and
a tower site management business primarily in northern California for
approximately $42.0 million. In connection therewith, American agreed to loan
up to $1.35 million to the sellers on an unsecured basis. Consummation of the
transaction is conditioned on, among other things, negotiation and execution
of definitive purchase and sale agreements and the expiration or earlier
termination of the HSR Act waiting period. Subject to such execution and
expiration or termination, the acquisitions are expected to be consummated in
the second quarter of 1997.
 
  In February 1997, the Tower Subsidiary entered into asset purchase
agreements with three entities that are affiliated with each other (the
"Meridian Transaction") to purchase tower sites and a tower site management
business in southern California for an aggregate purchase price of
approximately $32.1 million. Consummation of the transaction is conditioned
on, among other things, the expiration or earlier termination of the HSR Act
waiting period. Subject to such contingencies, the acquisitions are expected
to be consummated in the second quarter of 1997.
 
  In March 1997, the Tower Subsidiary entered into a letter of intent to
acquire the assets of a company relating to 63 sites in northern California on
which communication towers are to be constructed. The letter of intent
provides for the formation of a joint venture with the seller to construct the
towers in which the Tower Subsidiary would own 70% and the seller would own
30%. The seller would also receive approximately $1.1 million in cash. The
Tower Subsidiary is obligated to provide equity financing for construction of
those towers as well as any others that the joint venture may construct in the
future. Consummation of the transaction is conditioned on, among other things,
negotiation and execution of definitive purchase and sale agreement and joint
venture agreement. Subject to such execution, the acquisition is expected to
be consummated in the second quarter of 1997.
 
  In May 1997, the Tower Subsidiary entered into an agreement to purchase an
aggregate of 21 tower sites and a tower site management business in Georgia,
North Carolina and South Carolina for approximately $5.3 million. The
agreement will also provide for additional payments if the seller is able to
arrange the purchase or
 
                                      47
<PAGE>
 
management of tower sites presently owned by an unaffiliated public utility in
South Carolina, which payments are estimated could aggregate up to
approximately $1.2 million. Consummation of the transaction is expected in the
second quarter of 1997.
 
  In May 1997, the Tower Subsidiary expects to enter into an agreement to
acquire two companies that are affiliated with one another and are engaged in
the business of acquiring and developing tower sites for unaffiliated third
parties in various locations in the United States for approximately $12.5
million. Consummation of the transaction is conditioned on, among other things,
negotiation and execution of definitive purchase and sale agreement. Subject to
such execution, the acquisition is expected to be consummated in the second
quarter of 1997.
 
  Equity and Debt Financings
 
  February Public Offerings. In February 1996, American consummated an offering
of 5,514,707 shares of Class A Common Stock at an offering price of $27 per
share, including 4,501,337 shares sold by American and 1,013,370 shares sold by
the selling stockholders. Proceeds to American, net of underwriters' discount
and associated costs, were approximately $114.5 million. Concurrent with the
stock offering, American sold $175,000,000 principal amount of the American
Notes at a discount of $1,419,250 to yield 9.125%. Proceeds of the debt
offering to American, net of the underwriters' discount and associated costs,
were approximately $167.5 million.
 
  June Private Offering. In June 1996, American consummated an offering exempt
from registration under the Securities Act of 137,500 shares of Convertible
Preferred Stock. Net proceeds to American from the offering were approximately
$132.8 million. The Convertible Preferred Stock is convertible into shares of
Class A Common Stock at a conversion price of $42.50, subject to adjustment for
certain dilutive stock issuances, and exchangeable at American's option after
June 30, 1997 for the Convertible Exchange Debentures which are convertible
into Class A Common Stock on the same terms as the Convertible Preferred Stock.
 
  Original Offering. In January 1997, American consummated the Original
Offering. Net proceeds to American from the offering were approximately $192.4
million.
 
  Credit Agreements. In January 1997, American entered into the Credit
Agreements pursuant to which American may borrow a maximum combined principal
amount of $900.0 million, of which $150.0 million is available only to finance
the repurchase of American-EZ Notes. See "Indebtedness of American".
 
                                       48
<PAGE>
 
OPERATIONS
 
  The following table sets forth information about each of American's stations
and each of the stations which will be owned by American upon consummation of
the American Probable Transactions.
 
<TABLE>
<CAPTION>
                                                                                     STATION RANK STATION
                           MARKET   MARKET            STATION             PRIMARY     IN PRIMARY  RANK IN
                         RANKING BY REVENUE        BROADCASTING         DEMOGRAPHIC  DEMOGRAPHIC   ADULTS
   MARKET/STATION(1)     REVENUE(2) RANK(2)           FORMAT             TARGET(3)    TARGET(4)   25-54(4)
   -----------------     ---------- -------        ------------         ------------ ------------ --------
<S>                      <C>        <C>     <C>                         <C>          <C>          <C>
BOSTON, WORCESTER MA....      9         2
 WBMX-FM................                     Modern Adult Contemporary  Women 25-44        3          4
 WEEI-AM................                            Sports/Talk          Men 35-54         1          8
 WRKO-AM................                               Talk              Adults 35+        2         13
 WEGQ-FM................                            70's Oldies         Adults 25-44      11+        15
 WAAF-FM................                        Album Oriented Rock      Men 18-34         2         18
 WWTM-AM................                            Sports/Talk          Men 35-54        --         --
SEATTLE, WA.............     13         2
 KMPS-FM................                              Country           Adults 25-54       6          6
 KZOK-FM................                           Classic Rock          Men 25-54         2          3+
 KYCW-FM................                              Country           Adults 18-34       7          9+
 KBKS-FM................                    Rhythmic Adult Contemporary Adults 18-34       8         18
 KRPM-AM(5).............                    Rhythmic Adult Contemporary Adults 18-34      --         --
ST. LOUIS, MO...........     18         1
 KEZK-FM................                        Adult Contemporary      Women 25-54        1          2
 KYKY-FM................                        Adult Contemporary      Women 25-54        2          4
 KSD-FM.................                           Classic Rock          Men 25-54         4          7+
 KFNS-AM................                            Sports/Talk          Men 25-54        13         18+
BALTIMORE, MD...........     21         1
 WQSR-FM................                            60's Oldies         Adults 35-54       1          2
 WWMX-FM................                      Hot Adult Contemporary    Women 25-44        1          1
 WOCT-FM................                            70's Oldies         Adults 25-44       9+         9
 WBGR-AM................                             Religious           Adults 18+       --         --
 WBMD-AM................                             Religious           Adults 18+       --         --
CINCINNATI, OH..........     20         2
 WGRR-FM................                              Oldies            Adults 35-64       2          5
 WKRQ-FM................                      Contemporary Hit Radio    Adults 18-34       3          6+
PORTLAND, OR............     22         1
 KUPL-FM................                              Country           Adults 25-54       3          3
 KINK-FM*...............                      Adult Album Alternative    Men 25-54        11+         5
 KUFO-FM................                        Album Oriented Rock      Men 18-34         1         11+
 KBBT-FM................                     Modern Adult Contemporary  Adults 18-34       4         11+
 KKJZ-FM................                            Smooth Jazz         Adults 35-54       7          9
 KUPL-AM................                              Country           Adults 25-54      --         --
PITTSBURGH, PA..........     24         2
 WDSY-FM*...............                              Country           Adults 25-54       2          2
 WBZZ-FM................                      Contemporary Hit Radio    Adults 18-34       3          4
 WZPT-FM................                            70's Oldies         Adults 25-54      12         12
SACRAMENTO, CA..........     25         1
 KSFM-FM................                      Contemporary Hit Radio    Adults 18-34       1          4
 KNCI-FM................                              Country           Adults 25-54       6          6
 KZZO-FM................                     Modern Adult Contemporary  Women 25-44        1          2
 KYMX-FM................                      Soft Adult Contemporary   Women 35-54        1          8
 KHTK-AM................                            Talk/Sports         Adults 25-54       6         11
 KRAK-FM................                              Country           Adults 25-54       6         12
 KCTC-AM................                             Nostalgia           Adults 45+        2         21+
 KQPT-AM................                              Oldies            Adults 35-54      15         17+
</TABLE>
 
                                      49
<PAGE>
 
<TABLE>
<CAPTION>
                                                                                   STATION RANK STATION
                           MARKET   MARKET           STATION            PRIMARY     IN PRIMARY  RANK IN
                         RANKING BY REVENUE       BROADCASTING        DEMOGRAPHIC  DEMOGRAPHIC   ADULTS
   MARKET/STATION(1)     REVENUE(2) RANK(2)          FORMAT            TARGET(3)    TARGET(4)   25-54(4)
   -----------------     ---------- -------       ------------        ------------ ------------ --------
<S>                      <C>        <C>     <C>                       <C>          <C>          <C>
CHARLOTTE, NC...........     27         1
 WSOC-FM................                             Country          Adults 25-54       2          2
 WPEG-FM*...............                              Urban           Adults 18-34       1          3
 WSSS-FM................                           70's Oldies        Adults 25-49       3          4
 WBAV-FM*...............                              Urban           Adults 25-54       7          7
 WNKS-FM*...............                     Contemporary Hit Radio   Adults 18-34       4         11
 WBAV-AM*...............                              Urban           Adults 25-54      17         17
 WFNZ-AM*...............                             Sports           Adults 25-54      18+        18+
KANSAS CITY, MO.........     29         3
 KFKF-FM................                             Country          Adults 25-54       1          1
 KBEQ-FM................                             Country          Adults 18-34       4          2+
 KOWW-AM................                             Country           Adults 35+       --         --
HARTFORD, CT............     35         1
 WRCH-FM................                     Soft Adult Contemporary  Women 35-54        1          1
 WTIC-AM................                            News/Talk          Adults 35+        1          5
 WTIC-FM................                     Contemporary Hit Radio   Adults 18-34       1          2
 WZMX-FM................                           70's Oldies        Adults 25-44       4          6
AUSTIN, TX..............     37         4
 KKMJ-FM................                     Soft Adult Contemporary  Women 35-54        1          2
 KAMX-FM................                     Hot Adult Contemporary   Women 25-44        6+        10
 KJCE-AM................                    Urban Adult Contemporary  Adults 35-54      13         14
LAS VEGAS, NV...........     39         2
 KMZQ-FM................                     Soft Adult Contemporary  Women 35-54        1          1
 KLUC-FM................                     Contemporary Hit Radio   Adults 18-34       1          3
 KMXB-FM................                    Modern Adult Contemporary Women 25-44        2+         6
 KXTE-FM................                        Alternative Rock      Adults 18-34       3          9+
 KXNT-AM................                           Sports/Talk         Men 35-54        12+        16
 KXNO-AM................                             Casino            Adults 18+       --         --
BUFFALO, NY.............     42         2
 WJYE-FM................                     Soft Adult Contemporary  Women 35-54        1          3+
 WYRK-FM................                             Country          Adults 25-54       5          5
 WBLK-FM*...............                              Urban           Adults 18-34       4          8
 WLCE-FM(6).............                    Modern Adult Contemporary Women 25-44        9         11
 WECK-AM................                            Big Band           Adults 45+        2         14
SAN JOSE, CA............     43         1
 KSJO-FM................                       Album Oriented Rock     Men 18-34         2+         8
 KEZR-FM*...............                       Adult Contemporary     Women 35-54        1          2
 KBRG-FM*(7)............                     Undetermined at Present  Undetermined     N/A        N/A
 KUFX-FM*(7)............                     Soft Adult Contemporary  Women 35-54      N/A        N/A
 KLUE-FM*(7)............                     Hot Adult Contemporary   Women 25-44       --         --
WEST PALM BEACH, FL.....     49         2
 WEAT-FM................                     Soft Adult Contemporary  Women 35-54        1          1
 WIRK-FM................                             Country          Adults 25-54       3          3
 WPBZ-FM*...............                        Alternative Rock      Adults 18-34       2          5+
 WMBX-FM*(8)............                    Modern Adult Contemporary Women 25-44       12+        20+
ROCHESTER, NY...........     53         1
 WRMM-FM................                     Soft Adult Contemporary  Women 35-54        1          2
 WCMF-FM................                       Album Oriented Rock     Men 18-34         1          3
 WPXY-FM................                     Contemporary Hit Radio   Adults 18-34       2          4
 WZNE-FM(9).............                    Modern Adult Contemporary Women 25-44       --         --
DAYTON, OH..............     58         1
 WMMX-FM................                     Hot Adult Contemporary   Women 25-44        1          1
 WLQT-FM................                     Soft Adult Contemporary  Women 35-54        3          3
 WTUE-FM................                       Album Oriented Rock     Men 18-34         1          4
 WBTT-FM................                     Contemporary Hit Radio   Adults 18-34       9         12+
 WXEG-FM................                        Alternative Rock      Adults 18-34       5         10+
 WONE-AM................                            Nostalgia          Adults 45+        3         --
</TABLE>
 
                                       50
<PAGE>
 
<TABLE>
<CAPTION>
                                                                                   STATION RANK STATION
                           MARKET   MARKET           STATION            PRIMARY     IN PRIMARY  RANK IN
                         RANKING BY REVENUE       BROADCASTING        DEMOGRAPHIC  DEMOGRAPHIC   ADULTS
   MARKET/STATION(1)     REVENUE(2) RANK(2)          FORMAT            TARGET(3)    TARGET(4)   25-54(4)
   -----------------     ---------- -------       ------------        ------------ ------------ --------
<S>                      <C>        <C>     <C>                       <C>          <C>          <C>
FRESNO, CA..............     62         1
 KMJ-AM.................                            News/Talk          Adults 35+        1          1
 KSKS-FM................                             Country          Adults 25-54       2          2
 KVSR-FM................                    Modern Adult Contemporary Women 25-44        3          4
 KNAX-FM................                             Country          Adults 25-54      14         14
 KOQO-FM................                             Spanish          Adults 18-54      10+        13
 KKDJ-FM................                         Spanish Romance      Adults 18-54      16         18+
 KOQO-AM................                             Spanish          Adults 18-54      --         --
RIVERSIDE/SAN
 BERNARDINO, CA.........     64         1
 KFRG-FM*...............                             Country          Adults 25-54       1          1
 KXFG-FM*(10)...........                             Country          Adults 25-54      --         --
</TABLE>
- --------
N/A Not applicable.
*  Included in American Probable Transactions. Several of these stations are
   being programmed and marketed by American, pursuant to LMAs.
+  Tied.
(1) Actual community of license may differ from the metropolitan market served.
    This listing and the accompanying notes to not correspond top the formal
    call signatures recognized by the FCC, which do not include the "-AM"
    suffix or, in most instances, the "-FM" suffix.
(2) "Market Ranking by Revenue" is the ranking of the principal radio market
    served by the station among all radio markets in the United States, by 1996
    market revenue, according to the Duncan Guide. "Market Revenue Rank" is the
    ranking of American's station group (currently owned or operated and giving
    effect to the American Probable Transactions) among all radio stations in
    its market by gross radio revenue (excluding trade items) for 1996,
    according to the Duncan Guide. American has attempted to recompute Market
    Revenue Rank and Market Revenue Percent of its competitors based on
    consummated or announced acquisitions of such competitors. However, there
    can be no assurance that American is aware of all such acquisitions.
    Accordingly, the Market Revenue Rank of American's stations shown may not
    necessarily be the same were all such competitor's acquisitions taken into
    account.
(3) Due to variations that may exist within the same station programming format
    (such as variations in the tempo of the music or the age of the songs
    broadcast), the primary demographic target may be different even though the
    station programming format is the same.
(4) "Station Rank in Primary Demographic Target" is the ranking of the station
    among all radio stations in its market that are ranked in its target
    demographic group and is based on the station's average persons share in
    the primary demographic target in the applicable Metro Survey Area, Average
    Quarter Hour Share, Monday through Sunday, 6:00 A.M. to Midnight, according
    to the Winter 1997 Radio Arbitron reports (the "Winter 1997 Arbitron
    reports") prepared by the Arbitron Company ("Arbitron")*. Arbitron is the
    generally accepted industry source for statistical information concerning
    audience ratings. The table includes stations having at least a 0.1% market
    share. Due to the nature of listener surveys, other radio rating services
    may report different rankings; however, American does not believe that any
    radio rating service other than Radio Arbitron is accorded significant
    weight in the radio broadcast industry. "Station Rank in Adults 25-54" is
    also based on the Winter 1997 Arbitron reports. The information provided
    herein regarding Arbitron's audience listening estimates is based on
    Arbitron's copyrighted and proprietary data and estimates concerning the
    applicable station's average quarter hour persons share, Monday-Sunday,
    6:00 A.M.-Midnight, from the applicable Winter 1997 Arbitron reports for
    the demographic, daypart and metro areas listed. Stations referenced herein
    are ranked according to calculations made by Arbitron based on Arbitron's
    data and estimates for stations that have met Arbitron's minimum reporting
    standards for the applicable market and survey.
(5) Simulcast with KBKS-FM.
(6) Formerly WSJZ-FM. The station underwent a format change in April 1997;
    Arbitron figures reflect prior format.
(7) KBRG-FM is licensed to Fremont, California and serves the Fremont/San
    Francisco area. KUFX-FM will continue the programming of, and change its
    call letters to, KBAY-FM. KLUE-FM is licensed to broadcast in Soledad,
    California, which is not a part of the San Jose market and is not expected
    to have an impact in San Jose.
(8) Formerly WHLG-FM. Relaunched as Modern Adult Contemporary in January 1997.
(9) WZNE-FM (formerly WAQB-FM) is a newly licensed Class A FM station which
    went on-the-air in December 1996.
(10) KXFG-FM is licensed to Sun City, California and went on-the-air in
     February 1997. The station is simulcast with KFRG-FM.
- --------
*  Copyright 1996, The Arbitron Company. All Rights Reserved.
 
ADVERTISING SALES
 
  Virtually all of American's revenues are generated from the sale of local and
national advertising for broadcast on its radio stations. During 1996,
approximately 77% and 23% of American's net revenues were generated from local
and national advertising, respectively. American's revenues vary throughout the
year, with the first calendar quarter historically producing the lowest
revenues for the year and each of the other quarters producing roughly
equivalent revenues.
 
  American believes that radio is an efficient and cost-effective means for
advertisers to reach specific demographic groups. Advertising rates charged by
radio stations are based primarily on (i) a station's share of the audience in
the demographic groups targeted by advertisers, (ii) the number of stations and
alternative media (electronic, print and others) in the market competing for
the same demographic groups, and (iii) the supply of
 
                                       51
<PAGE>
 
and demand for radio advertising time, and the supply of and demand for
advertising in alternative media. Rates are generally highest during morning
and afternoon commuting hours.
 
  American believes that operating several radio stations in each of its
markets will enable its sales teams to offer advertisers more attractive
advertising packages. Furthermore, as radio station groups achieve significant
audience shares, they can deliver the audience reach to advertisers that
historically only television and newspapers could offer, with the added
benefit of frequent exposure to advertisers' potential customers. Management
believes that American's station groups, and their corresponding audience
shares, provide opportunities to capture an increased share of total
advertising revenue in each of American's markets.
 
  Depending on the format of a particular station, there are predetermined
numbers of advertisements that are broadcast each hour. American determines
the number of advertisements broadcast hourly that can maximize available
revenue dollars without jeopardizing listening levels. Although the number of
advertisements broadcast during a given time period may vary, the total number
of advertisements broadcast on a particular station generally does not vary
significantly from year to year. As is typical of the broadcasting industry,
American's stations respond to changing demand for advertising inventory by
varying prices based on supply and demand rather than by varying the target
inventory level (and potentially jeopardizing audience levels) for a
particular station.
 
  Local and most regional advertising sales are made by a station's sales
staff. To achieve greater access to potential advertising dollars, American's
sales force focuses on establishing direct relationships with local
advertisers. National sales are made by firms specializing in such sales which
are compensated on a commission-only basis. The majority of advertising
contracts run for only a few weeks.
 
  Advertising sales in connection with its sports network generated
approximately 8% of American's revenues during 1996. American believes that
live sports event broadcasting, absent unusual circumstances, is a relatively
stable source of advertising revenues. Because only one radio station can
offer a particular game, the station carrying the game achieves a higher
degree of differentiation from its competitors. In addition, due to the higher
degree of audience predictability, sports advertisers tend to sign contracts
which are generally longer term and more stable than those with American's
other advertisers. American's sports network also benefits from a dedicated
and experienced sales force that has specialized expertise in sports
advertising.
 
  American believes its multi-station combinations give it significant
advantages in the competition for advertising dollars. A leading group in a
market better positions American to access a significant share of various
demographic segments, making its stations more attractive to advertisers
seeking to reach a given segment. In addition, management believes the larger
size of the American organization attracts a higher quality sales force, a key
asset for the profitability of a radio station.
 
COMPETITION
 
  Radio broadcasting is a highly competitive business. Each of American's
radio stations competes for audience share and advertising revenue directly
with other radio stations, as well as with other media such as newspapers,
broadcast and cable television, magazines, billboards, direct mail, compact
discs and music videos. There are typically other well-capitalized firms
competing in the same geographic markets as American, many of which have
substantial financial resources. With the elimination of restrictions on the
number of radio stations which may be owned nationally by a single entity and
the liberalization of local ownership restrictions effected by the
Telecommunications Act, the radio industry is experiencing a consolidation of
ownership, as a result of which competition may intensify as companies with
substantial resources emerge.
 
  The financial success of each of American's radio stations is dependent
principally upon its share of the overall advertising revenue within its
geographic market, its promotion and other expenses incurred to obtain that
revenue and the economic health of the geographic market. A radio station's
advertising revenues are, in turn, highly dependent upon audience share.
Audience share is influenced by factors including: changes in listener
preference, audience migration to other media supplying music, news and other
entertainment and the programming decisions and promotional efforts of
competing stations in American's markets. The broadcast cash
 
                                      52
<PAGE>
 
flow of American's affected stations could decrease due to increased
promotional and other expenses incurred in response to changes in its markets
and/or lower advertising revenues resulting from lower ratings.
 
  In addition to management experience, factors that may materially influence
a station's competitiveness include audience characteristics, local program
acceptance and the characteristics of other stations in the market area.
American attempts to improve its competitive position in each market by
devoting extensive research to its stations' programming, implementing
advertising campaigns aimed at the demographic groups for which its stations
program and managing its sales efforts to attract a larger share of
advertising dollars.
 
  As noted above, radio broadcasting is also subject to competition from
electronic and print media. Potential advertisers can substitute advertising
through broadcast television, cable television systems (which can offer
through cable interconnects concurrent exposure on a number of cable networks
to enlarge the potential audience), daily, weekly and free-distribution
newspapers, other print media, direct mail and on-line computer services for
radio advertising. Competing media frequently target the customers of their
competitors, and advertisers regularly shift dollars from radio to these
competing media and vice versa.
 
  Radio broadcasting is also subject to competition from new media
technologies that are being developed or introduced, such as the delivery of
audio programming by cable television systems or the introduction of DAB. DAB
may deliver to nationwide and regional audiences by satellite multi-channel,
multi-format digital radio services with sound quality equivalent to compact
discs. The FCC has allotted and auctioned spectrum for DAB to two companies
that plan to implement DAB within the next five years. American cannot predict
the effect, if any, that any such new technologies may have on the radio
broadcasting industry. Another possible competitor to traditional radio is
IBOC digital radio. IBOC could provide multi-channel, multi-format digital
radio services in the same bandwidth currently occupied by traditional FM
radio services. See "--Federal Regulation of Radio Broadcasting". See "--
Federal Regulation of Radio Broadcasting" for information concerning
additional competitions from other media, entertainment and telecommunication
companies which might be able to enter the radio broadcasting industry in the
event of legislative or regulatory change. The radio broadcasting industry
historically has grown in terms of total revenues despite the introduction of
new technologies for the delivery of entertainment and information, such as
television broadcasting, cable television, audio tapes and compact disks.
 
  There can be no assurance that any of American's radio stations will be able
to maintain or increase its current audience share and advertising revenue
share.
 
EMPLOYEES
 
  At April 15, 1997, American employed approximately 2,631 employees
(approximately 1,883 full time and approximately 748 part time persons).
American has three agreements with the American Federation of Television and
Radio Artists ("AFTRA") covering various on-air personnel at four of its
Boston stations, at two of its Hartford stations and one of its Cincinnati
stations. American also has agreements with the International Brotherhood of
Electrical Workers, AFL-CIO ("IBEW") in Boston expiring on April 30, 1997 and
in Fresno, which expired on March 1, 1997 and is currently in negotiation.
American considers its relations with its employees, AFTRA and IBEW to be
satisfactory. See "Risk Factors--Dependence on Key Personnel" for information
with respect, among other things, to the dependence of American upon the
performance of certain key individuals, particularly the executive officers
and general managers and high-profile on-air announcers of its stations.
 
COMMUNITY INVOLVEMENT
 
  American considers its community involvement to be of considerable
importance, and, to that end, each of its stations participates in many
community programs, fund raisers and activities that benefit a wide variety of
organizations. Charitable organizations that have been the beneficiaries of
American's telethons, marathons, walkathons, swimathons, parades, food banks,
fairs and festivals include, among others, the American Cancer Society,
American Heart Association, Big Brothers, Big Sisters, Red Cross, United Way,
Salvation Army, Jimmy Fund (Dana Farber Cancer Institute), St. Jude's Hospital
and many other organizations.
 
 
                                      53
<PAGE>
 
FEDERAL REGULATION OF RADIO BROADCASTING
 
  The radio broadcasting industry is subject to extensive and changing
regulatory oversight, governing among other things, technical operations,
ownership and business and employment practices, and certain types of program
content (including indecent and obscene program material).
 
  The ownership, operation and sale of radio broadcast stations (including
those licensed to American) are subject to the jurisdiction of the FCC, which
acts under authority granted by the Communications Act. The Communications Act
prohibits the assignment of an FCC license or any transfer of control of an
FCC licensee without the prior written approval of the FCC. In determining
whether to grant requests for consents to such assignments or transfers, and
in determining whether to grant or renew a radio broadcast license, the FCC
considers a number of factors pertaining to the licensee (and proposed
licensee) including compliance with alien ownership restrictions and rules
governing the multiple ownership and cross-ownership of broadcast and other
media properties, the "character" of the applicant and those persons or
entities holding "attributable" interests in the applicant and compliance with
the Anti-Drug Abuse Act of 1988. Among other things, the FCC assigns frequency
bands for radio broadcast stations; issues, renews, revokes and modifies radio
broadcast station licenses; regulates transmitting equipment used by radio
broadcast stations; and adopts and implements regulations and policies that
directly or indirectly affect the ownership, operation, program content and
employment and business practices of radio broadcast stations. The FCC also
has the power to impose penalties for violations of its rules and the
Communications Act.
 
  On February 8, 1996, the President signed the Telecommunications Act which
substantially amended the Communications Act. The Telecommunications Act,
among other things, eliminated the national radio broadcast ownership
restrictions in the FCC's broadcast ownership regulations and raised the
ceiling on the number of radio broadcast stations that a single entity may own
in a local radio market. The precise number of stations that may be commonly
owned in a particular local market depends upon the number of commercial radio
stations serving the local market.
 
  The following is a brief summary of certain provisions of the Communications
Act and specific FCC rules and policies. Reference should be made to the
Communications Act, the FCC's rules and the public notices and rulings of the
FCC for further information concerning the nature and extent of federal
regulation of radio broadcast stations.
 
  License Renewal. Under present FCC rules, radio broadcast licenses are
granted for maximum terms of eight years and upon application may be renewed
for additional terms. Broadcast licenses may be renewed through an application
to the FCC and licensees are entitled to renewal expectancies. The
Communications Act authorizes the filing of petitions to deny a license
renewal application during specified periods after the renewal application has
been filed. Interested parties, including members of the public, may file
petitions as a means to raise issues concerning the renewal applicant's
qualifications. The FCC may not consider applications for the channel by other
parties until it first has decided to deny renewal to the incumbent. Before
denying renewal to an incumbent, the FCC must allow the licensee a hearing on
the licensee's alleged failure to satisfy the statutory standard. The
Communications Act now prohibits the FCC from considering whether another
licensee would be preferable until it first has determined that the incumbent
does not qualify for renewal. In the vast majority of cases the FCC has
renewed incumbent operators' station licenses. Also, during certain periods
when a renewal application is pending, the transferability of the applicant's
license may be restricted. American is not aware of any facts or circumstances
that would prevent it from obtaining renewal of the radio broadcast licenses
that it holds. There can be no assurance, however, that each of American's
licenses will necessarily be renewed.
 
  The current expiration date of American's stations (including the American
Probable Transactions) is as follows: Boston--April 1998; Seattle--February
1998; Baltimore--October 2003; Cincinnati--October 2004; Portland--February
1998; Pittsburgh--August 1998; Sacramento--December 1997; Kansas City--June
1997; Charlotte--December 2003; Hartford--April 1998; Buffalo--June 1998; Las
Vegas--October 1997; San Jose--December 1997; West Palm Beach--February 2004;
Rochester--June 1998; Dayton--2004, Fresno--December 1997; and Riverside/San
Bernardino--December 1997. Applications are pending for the renewal of
licenses for certain of the St. Louis and Kansas City stations and all of the
Austin stations.
 
                                      54
<PAGE>
 
  Ownership Matters. The FCC's broadcast multiple ownership rules restrict the
number of radio broadcast stations one person or entity may own, operate or
control in a local market. The Telecommunications Act eliminated all of the
FCC's restrictions on the number of FM and AM radio stations that an entity
may own nationwide. The Telecommunications Act also raised the limitation on
the number of radio broadcast stations that a single entity may own in a given
local market, as follows:
 
  (i)   In radio markets with 14 or fewer commercial radio stations, one person
        or entity may hold attributable interests in up to five radio stations,
        no more than three of which may be in any one service (i.e., AM or FM),
        as long as the commonly owned stations amount to no more than 50% of
        the commercial radio stations in that market;
 
  (ii)  In radio markets with between 15 and 29 commercial radio stations, one
        person or entity may hold attributable interests in up to six radio
        stations, no more than four of which may be in any one service;
 
  (iii) In radio markets with between 30 and 44 commercial radio stations,
        one person or entity may hold attributable interest in up to seven
        radio stations, no more than four of which may be in any one service;
        and
 
  (iv)  In radio markets with 45 or more commercial radio stations, one person
        or entity may hold attributable interests in up to eight radio
        stations, no more than five of which may be in any one service.
 
  The FCC rules also generally restrict the common ownership, operation or
control of (i) a radio broadcast station and a television broadcast station
serving the same local market, and (ii) a radio broadcast station and a daily
newspaper serving the same local market. Under these "cross-ownership" rules,
American, absent waivers, would not be permitted to acquire an attributable
interest in any daily newspaper or television broadcast station (other than a
low-power television station) in a local market where it then owned any radio
broadcast station. American is not aware of any reason why these cross-
ownership rules would require any change in American's current ownership of
radio broadcast stations.
 
  Programming and Operation. The Communications Act requires broadcasters to
serve the "public interest". A broadcast licensee is required to present
programming in response to community problems, needs and interest and to
maintain certain records demonstrating its responsiveness. The FCC will
generally consider complaints from listeners concerning a broadcast station's
programming when it evaluates the licensee's renewal application, but such
complaints may be filed and considered at any time. Stations also must follow
various FCC rules that regulate, among other things, political advertising,
the broadcast of obscene or indecent programming, sponsorship identification,
the broadcast of contests and lotteries and technical operation (including
limits on human exposure to radio frequency energy). From time to time,
complaints have been and may be filed against American's stations alleging
violations of these or other rules. A complaint is pending against a station
licensed to American alleging violation of the political broadcasting rules by
discriminatory political sales practices. American believes that these
complaints will not, either separately or in the aggregate, result in either
monetary forfeitures of a material nature or any other regulatory action which
might have a materially adverse effect on American's stations or FCC licenses.
 
  In addition, licensees must develop and implement programs designed to
promote equal employment opportunities and must submit reports to the FCC on
these matters annually and in connection with the licensee's renewal
application. The FCC has begun a rule making proceeding to revise its equal
employment opportunity rules. At this time, however, American cannot predict
what changes, if any, the FCC will implement, or the effect of those changes
on American's current equal employment opportunity programs.
 
  Local Marketing Agreements. In recent years, a number of radio stations,
including certain of American's stations, have entered into what are referred
to as "local marketing agreements" ("LMAs"), "time brokerage agreements"
("TBAs") or joint sales and service agreements. These agreements take various
forms. Separately
 
                                      55
<PAGE>
 
owned and licensed stations may agree to function cooperatively with respect
to certain other matters, subject to compliance with the antitrust laws and
the FCC's rules and policies, including the requirement that the licensee of
each station maintain independent control over the programming and other
operations of its own station. The FCC has held that such agreements do not
violate the Communications Act as long as the licensee of the radio broadcast
station that is being substantially programmed by another entity maintains
complete responsibility for, and control over, operations of its station and
otherwise ensures compliance with applicable FCC rules and policies. A radio
broadcast station that brokers time on another radio broadcast station or
engages in a TBA or LMA with a radio broadcast station in the same market will
be considered to have an attributable ownership interest in the brokered radio
station for purposes of the FCC's multiple ownership rules, if the arrangement
covers more than 15% of the brokered station's weekly broadcast hours.
 
  Failure to observe these or other FCC rules and policies may result in the
imposition of various sanctions, including admonishment, fines, the grant of
"short" (less than the full) renewal terms or, for particularly egregious
violations, the denial of a license renewal application, the revocation of FCC
licenses or the denial of FCC consent to acquire additional broadcast
properties.
 
  Digital Audio Broadcasting. The FCC recently has allocated spectrum to a new
technology, DAB to deliver satellite-based audio programming to a national or
regional audience. The FCC has issued regulations for a DAB service and has
auctioned the allocated spectrum to two companies that plan to initiate
service within five years. DAB may provide a medium for the delivery by
satellite or terrestrial means of multiple new audio programming formats with
compact disc quality sound to local and national audiences. Another form of
DAB, known as IBOC, is being developed by the radio industry and could provide
DAB in the present FM radio band. Implementation of DAB would provide an
additional audio programming service that could compete with American's radio
stations for listeners, but the effect upon American cannot be predicted.
 
  Future Changes. The Congress and the FCC have under consideration, and may
in the future consider and adopt, new laws, regulations and policies regarding
a wide variety of matters that could, directly or indirectly: (i) affect the
operation, ownership and profitability of American and its radio stations;
(ii) result in the loss of audience share and advertising revenue of
American's radio stations; and (iii) affect the ability of American to acquire
additional radio stations or finance such acquisitions. Such matters include,
but are not limited to, for example, changes to the license renewal process;
proposals to impose spectrum use or other governmentally-imposed fees upon
licensees; proposals to repeal or modify some or all of the FCC's multiple
ownership rules and/or policies; proposals to permit expanded use of FM
translator stations; proposals to restrict or prohibit the advertising of
beer, wine and other alcoholic beverages on radio and television; changes in
the FCC's cross-interest, multiple ownership, alien ownership and cross-
ownership rules and policies; changes to broadcast technical requirements;
proposals to limit the tax deductibility of advertising expenses by
advertisers; and proposals to auction the right to use the broadcast spectrum
to the highest bidder, instead of granting broadcast licenses and subsequent
license renewals free of charge.
 
  American cannot predict what other matters may be considered in the future,
nor can it judge in advance what impact, if any, the implementation of any of
these proposals or changes might have on its business.
 
                                     * * *
 
  The foregoing is only a brief summary of certain provisions of the
Communications Act, the Telecommunications Act and of specific FCC rules and
other regulations. Reference should be made to the Communications Act, the
Telecommunications Act, FCC regulations, and the public notices and rulings of
the FCC for further information concerning the nature and extent of federal
regulation of broadcast stations. In addition to the Telecommunications Act,
the Congress and the FCC have had under consideration, and may in the future
consider and adopt, new laws, regulations and policies regarding a wide
variety of matters that could, directly or indirectly, affect the operation,
ownership and profitability of American's radio broadcast stations,
 
                                      56
<PAGE>
 
result in the loss of audience share and advertising revenues for American's
radio broadcast stations or affect its ability to acquire additional radio
broadcast stations or finance such acquisitions. Such matters may include
changes to the comparative licensing and hearing process; proposals to impose
spectrum use or other fees on FCC licensees; changes to the FCC's equal
employment opportunity regulations and other matters relating to involvement
of minorities and women in the broadcasting industry; proposals to change
rules relating to political broadcasting; technical and frequency allocation
matters; changes in broadcast cross- interest, multiple ownership and cross-
ownership policies; changes to technical broadcast requirements; proposals to
allow telephone companies to deliver audio and video programming to homes in
their service areas; and proposals to alter provisions of the tax laws
affecting broadcast operations and acquisitions.
 
  American cannot predict whether or when any proposed changes will be adopted
nor can it predict what other matters might be considered in the future, nor
can it judge in advance what impact, if any, the implementation of any of
these proposals or changes might have on its business.
 
PROPERTIES
 
  American's corporate headquarters are located in leased facilities at 116
Huntington Avenue, Boston, Massachusetts. The properties used by American's
radio stations and owned by the Tower Subsidiary consist of office and studio
facilities, towers, and tower and transmitter sites. Station studio and sales
offices are generally located in a downtown or business district. Antennas are
located on either American-owned or leased towers. Transmitter and tower sites
are generally located to provide maximum market coverage. American believes
that owning its tower and transmitter sites is an important goal for American
inasmuch as such ownership provides a station with the stabilizing benefits of
predictable cash flow and lower fixed operating costs. American office and
studio facilities, towers and tower and transmitter sites that are leased by
American are under leases that expire in three to twenty-five years, most of
which are renewable. American does not anticipate any difficulties in renewing
its leases, where required, or in leasing additional space, if required, and
it believes that its properties are adequate for its operations. American owns
substantially all of the equipment it uses, including its transmitting
antennas, transmitters, studio equipment and general office equipment.
American believes that its properties are in good condition and suitable for
its operations; however, American continually reviews opportunities to upgrade
its properties. See Notes to Consolidated Financial Statements of American in
the American 10-K for additional information regarding the minimum annual
rental commitments of American.
 
LEGAL PROCEEDINGS
 
  From time to time, American becomes involved in various claims and lawsuits
that are incidental to its business. In the opinion of American's management,
there are no material legal proceedings pending against American.
 
  In January 1997, EZ and American were served with a Civil Investigative
Demand by the Department of Justice concerning activities of the Charlotte
Area Radio Managers organization ("CHARM") with respect to radio advertising
pricing in the Charlotte area. It is American's understanding that many radio
operators in Charlotte were served with similar or identical Civil
Investigative Demands. Although it is impossible to predict the outcome of
this investigation, American believes it will not have a material adverse
effect on American.
 
 
                                      57
<PAGE>
 
                                  MANAGEMENT
 
EXECUTIVE OFFICERS AND DIRECTORS
 
  The executive officers and directors of American are as follows:
 
<TABLE>
<CAPTION>
        NAME              AGE                          POSITIONS
        ----              ---                          ---------
<S>                       <C> <C>
Steven B. Dodge(1)......   51 Chairman of the Board, President and Chief Executive Officer
Thomas H. Stoner(1)(3)..   62 Chairman of the Executive Committee of the Board
Alan L. Box.............   45 Executive Vice President and Director
Joseph L. Winn..........   45 Treasurer, Chief Financial Officer and Director
Don P. Bouloukos........   48 Co-Chief Operating Officer
John R. Gehron..........   50 Co-Chief Operating Officer
David Pearlman..........   46 Co-Chief Operating Officer
Charlton H.
 Buckley(1)(3)..........   59 Director
Arnold L.
 Chavkin(1)(2)..........   45 Director
James H. Duncan,
 Jr.(2)(4)..............   49 Director
Arthur C. Kellar(1)(3)..   74 Director
Charles D. Peebler,
 Jr.(3)(4)..............   60 Director
Lance R. Primis(2)......   50 Director
</TABLE>
- --------
(1) Member of the Executive Committee; Mr. Stoner is the Chairman of the
    Executive Committee.
(2) Member of the Audit Committee; Mr. Chavkin is the Chairman of the Audit
    Committee.
(3) Member of the Compensation Committee; Mr. Stoner is the Chairman of the
    Compensation Committee.
(4) Independent director elected by holders of the Class A Common Stock.
 
  The Board of Directors of American currently consists of ten members. All
directors hold office until the annual meeting of the stockholders of American
next following their election or until their successors are elected and
qualified. The holders of the shares of Class A Common Stock, voting
separately as a class, are entitled to elect two independent directors. Each
executive officer is appointed annually by the Board of Directors and serves
at the discretion of the Board.
 
                                      58
<PAGE>
 
                    DESCRIPTION OF THE NEW PREFERRED STOCK
 
GENERAL
 
  When issued, the New Preferred Stock will be fully paid and nonassessable.
The holders of the New Preferred Stock will have no preemptive rights with
respect to any shares of capital stock of American or any other securities of
American convertible into or carrying rights or options to purchase any such
shares. Harris Trust and Savings Bank is the registrar, transfer agent and
dividend disbursing agent for the New Preferred Stock. The following summary
description of the terms of the New Preferred Stock is qualified in its
entirety by reference to the Certificate of Designation of the New Preferred
Stock (the "Certificate of Designation"), a copy of which has been filed with
the Commission and is part of the Registration Statement of which this
Prospectus is a part and the summary herein of certain provisions thereof does
not purport to be complete and is subject to, and is qualified in its entirety
by, reference thereto. Wherever particular provisions of the Certificate of
Designation are referred to, such provisions are incorporated by reference as
a part of the statements made, and the statements are qualified in their
entirety by such reference. Certain terms used in this summary without
definition are defined in the Certificate of Designation and, unless otherwise
noted, have the same meaning as given such terms in the Certificate of
Designation.
 
RANKING
 
  The New Preferred Stock will rank, with respect to the dividend rights and
rights on liquidation, winding up and dissolution, (i) senior to all classes
of Common Stock of American, each other class of capital stock or series of
Preferred Stock established after the date of this Prospectus by the Board of
Directors of American (or, to the extent permitted by the Delaware General
Corporation Law, the Executive Committee thereof) (the "Board") which does not
expressly provide that it ranks senior to or on a parity with the New
Preferred Stock as to dividend rights and rights on liquidation, winding up
and dissolution (collectively referred to with the Common Stock of American as
"Junior Securities"); (ii) on a parity with the Old Preferred Stock and the
Convertible Preferred Stock and each other class of capital stock or series of
Preferred Stock established after the date of this Prospectus by the Board,
which expressly provides that such series will rank on a parity with the New
Preferred Stock as to dividend rights and rights on liquidation, winding up
and dissolution (collectively referred to as "Parity Securities"); and (iii)
junior to each other class of capital stock or series of Preferred Stock
established after the date of this Prospectus by the Board the terms of which
specifically provide that such series will rank senior to the New Preferred
Stock as to dividend rights and rights on liquidation, winding up and
dissolution (collectively referred to as "Senior Securities"). While any
shares of New Preferred Stock are outstanding, American may not issue,
authorize or increase the authorized amount of, or issue, authorize or
increase the authorized amount of any obligation or security convertible into
or evidencing a right to purchase, any class or series of Senior Securities,
without the vote or consent of a majority of the holders of the outstanding
shares of New Preferred Stock and any Parity Securities (including without
limitation the Old Preferred Stock and the Convertible Preferred Stock),
voting as a single class (with each share being entitled to the number of
votes specified, if so specified, for such securities) without regard to
series. However, American may create additional classes of Junior or Parity
Securities, authorize or increase the authorized amount of any obligation or
security (other than Senior Securities) convertible into or evidencing a right
to purchase Junior or Parity Securities, increase the authorized number of
shares of any Junior or Parity Security or issue any Junior or Parity
Securities or any obligation or security (other than Senior Securities)
without the consent of any holder of the New Preferred Stock. See "--Voting
Rights".
 
LIQUIDATION RIGHTS
 
  In the event of any voluntary or involuntary liquidation, dissolution or
winding up of American, before any payment or distribution of assets is made
on any Junior Securities, including, without limitation, Common Stock of
American, the holders of New Preferred Stock shall receive the liquidation
preference per share of New Preferred Stock ($100 per share), plus, without
duplication, an amount in cash equal to all accumulated and unpaid dividends
through the date of distribution, and the holders of any Parity Securities
shall be entitled to
 
                                      59
<PAGE>
 
receive the full respective liquidation preferences (including any premium) to
which they are entitled and shall receive all accumulated and unpaid dividends
with respect to their respective shares through and including the date of
distribution. If, upon such a voluntary or involuntary liquidation,
dissolution or winding up of American, the assets of American are insufficient
to pay in full the amounts described above as payable with respect to the New
Preferred Stock and any Parity Securities, the holders of the New Preferred
Stock and such Parity Securities will share ratably in any such distribution
of assets of American first in proportion to their respective liquidation
preferences until such preferences are paid in full, and then in proportion to
their respective amounts of accumulated and unpaid dividends. After payment of
any such liquidation preference and accumulated and unpaid dividends, the
shares of New Preferred Stock will not be entitled to any further
participation in any distribution of assets by American. Neither the sale or
transfer of all or substantially all the assets of American, nor the merger or
consolidation of American into or with any other corporation or other entity
or a merger of any other corporation or other entity with or into American,
will be deemed to be a liquidation, dissolution or winding up of American.
 
DIVIDENDS
 
  Holders of shares of the New Preferred Stock will be entitled to receive,
when, as and if declared by the Board out of funds of American legally
available for payment, cash dividends at an annual rate equal to 11 3/8% of
the liquidation preference per share of the New Preferred Stock. All dividends
will be cumulative, whether or not earned or declared, on a daily basis from
the date to which dividends have been paid (or deemed to have been paid) on
the Old Preferred Stock and will be payable in arrears on January 15, April
15, July 15 and October 15 of each year (each a "Dividend Payment Date"),
commencing July 15, 1997. American may, at its option, pay dividends on any
Dividend Payment Date occurring on or before January 15, 2002 either in cash
or in additional shares of New Preferred Stock. In the event that, after
January 15, 2002, cash dividends on the New Preferred Stock are in arrears and
unpaid for six or more quarterly dividends periods (whether or not
consecutive), holders of New Preferred Stock will be entitled to certain
voting rights. See "--Voting Rights" below. Each dividend will be payable to
holders of record as they appear on the stock transfer books of American on a
record date, not more than sixty (60) nor less than ten (10) days before the
payment date, fixed by the Board. Dividends payable for any period less than a
full dividend period will be computed on the basis of a 360-day year
consisting of twelve 30-day months and the actual number of days elapsed in
the period for which payable. The New Preferred Stock will not be entitled to
any dividend, whether payable in cash, property or stock, in excess of full
cumulative dividends. No interest, or sum of money in lieu of interest, will
be payable in respect of any accumulated and unpaid dividends. The ability of
American to pay dividends on the New Preferred Stock is restricted under the
terms of the Note Indentures and is prohibited during the existence of a
default under the Credit Agreements or either of the Note Indentures. See
"Risk Factors--Factors Relating to American and its Business--Restrictions
Imposed by Terms of Indebtedness", "Indebtedness of American", "Description of
Capital Stock--Dividend Restrictions", and Notes to Consolidated Financial
Statements of American in the American 10-K.
 
  Unless otherwise resolved by the Board of Directors with respect to any
Dividend Payment Date, if any dividend payable on such Dividend Payment Date
on or before January 15, 2002 is not declared or paid in full in cash on such
Dividend Payment Date, the amount payable as dividends on such Dividend
Payment Date that is not paid in cash on such Dividend Payment Date will be
paid in additional shares of New Preferred Stock on such Dividend Payment Date
and, unless such shares are not issued, will be deemed paid in full and will
not accumulate. All dividends paid with respect to shares of the New Preferred
Stock pursuant to the foregoing shall be paid pro rata to the Holders entitled
thereto.
 
  No full dividends may be declared or paid or funds set apart for the payment
of dividends on any Parity Securities for any period unless full cumulative
dividends shall have been paid (or deemed paid) or, if payable in cash, set
apart for such payment on the New Preferred Stock. If full dividends are not
so paid, the New Preferred Stock shall share dividends pro rata with the
Parity Securities. No dividends may be paid or set apart for such payment on
Junior Securities (except dividends on Junior Securities in additional shares
of Junior Securities) and no Junior Securities may be repurchased, redeemed or
otherwise retired nor may funds be set apart for
 
                                      60
<PAGE>
 
payment with respect thereto, if full dividends have not been paid on the New
Preferred Stock. Accumulated unpaid dividends will not bear interest. Prior to
January 15, 2002, the Company may elect to pay dividends on the New Preferred
Stock by issuing additional shares of New Preferred Stock, as described above,
while at the same time paying cash dividends on Parity Securities (including
the Convertible Preferred Stock) or Junior Securities. Conversely, if at any
time the Company is in cash dividend arrears as to Parity Securities, whether
as a result of payment restrictions contained in the Company's debt
instruments or otherwise, the Company will be permitted to pay dividends on
the New Preferred Stock only pro rata with such Parity Securities (if at all),
even if the Company elects to pay such dividends by issuing additional shares
of New Preferred Stock.
 
OPTIONAL REDEMPTION
 
  Shares of the New Preferred Stock are not subject to any sinking fund or
other similar provision and may not be redeemed by American on or prior to
January 15, 2002. After January 15, 2002, the New Preferred Stock will be
redeemable at the option of American upon notice at any time, in whole or in
part, at the following redemption prices per share (expressed as a percentage
of the liquidation preference thereof), plus accumulated and unpaid dividends,
if any, up to but excluding the date fixed for redemption, if redeemed during
the twelve-month period commencing immediately after January 15 of the years
indicated below:
 
<TABLE>
<CAPTION>
     YEAR                                                       REDEMPTION PRICE
     ----                                                       ----------------
     <S>                                                        <C>
     2002......................................................     105.688%
     2003......................................................     104.550
     2004......................................................     103.413
     2005......................................................     102.275
     2006......................................................     101.138
     2007 and thereafter.......................................     100.000
</TABLE>
 
  In addition, prior to January 15, 2000, the Company may, at its option, use
the net cash proceeds of one or more Public or Rule 144A Equity Offerings to
redeem up to 35% of the outstanding New Preferred Stock, at a redemption price
of 111.375% of the liquidation preference thereof plus, in each case, without
duplication, an amount in cash equal to all accumulated and unpaid dividends
to the redemption date (including an amount in cash equal to a prorated
dividend for the period from the Dividend Payment Date immediately prior to
the redemption date to the redemption date); provided, however, that after any
such redemption, there must be at least $130.0 million aggregate liquidation
preference of New Preferred Stock outstanding. Any such redemption will be
required to occur on or prior to sixty (60) days after the receipt by the
Company of the proceeds of each Public or Rule 144A Equity Offering. In the
event of a redemption of only a portion of the then outstanding shares of the
New Preferred Stock, the Company shall effect such redemption on a pro rata
basis, except that the Company may redeem such shares held by holders of fewer
than 100 shares (or shares held by holders who would hold less than 100 shares
as a result of such redemption), as may be determined by the Company.
 
MANDATORY REDEMPTION
 
  The New Preferred Stock will also be subject to mandatory redemption
(subject to the legal availability of funds therefor) in whole on January 15,
2009, at a price equal to 100% of the liquidation preference thereof, plus,
without duplication, all accumulated and unpaid dividends to the date of
redemption. Future agreements of the Company may restrict or prohibit the
Company from redeeming the New Preferred Stock.
 
PROCEDURE FOR REDEMPTION
 
  Notice of redemption will be given by mail, not less than thirty (30) nor
more than sixty (60) days prior to the date fixed for redemption thereof, to
each record holder of the shares of New Preferred Stock to be redeemed at the
address of such holder in the stock register of American. If a notice of
redemption has been given, from and after the specified redemption date
(unless American defaults in making payment of the redemption price),
dividends on the New Preferred Stock so called for redemption will cease to
accumulate, such shares will no
 
                                      61
<PAGE>
 
longer be deemed to be outstanding and all rights of the holders thereof as
stockholders of American (except the right to receive the redemption price)
will cease.
 
  The ability of American to redeem New Preferred Stock is restricted under
the terms of the Credit Agreements and the Note Indentures and is prohibited
during the existence of a default under any thereof. See "Risk Factors--
Factors Relating to American and its Business--Restrictions Imposed by Terms
of Indebtedness", "Indebtedness of American", and Notes to Consolidated
Financial Statements of American in the American 10-K.
 
VOTING RIGHTS
 
  Except as indicated below or as expressly required by applicable law, the
holders of the New Preferred Stock will have no voting rights.
 
  If (i) dividends (either in cash or, on or before January 15, 2002, through
the issuance of additional shares of New Preferred Stock) on the New Preferred
Stock are in arrears and unpaid for six or more quarterly dividend periods
(whether or not consecutive), (ii) the Company fails to redeem the New
Preferred Stock on January 15, 2009, or fails to otherwise discharge any
redemption obligation with respect to the New Preferred Stock, (iii) the
Company fails to make an Offer to Purchase if such offer is required by the
provisions set forth under "--Change of Control" below or fails to purchase
shares of New Preferred Stock from holders who elect to have such shares
purchased pursuant to the Offer to Purchase, (iv) a breach or violation of any
of the provisions described under the caption "--Certain Covenants" occurs and
the breach or violation continues for a period of thirty (30) days or more
after the Company receives notice thereof specifying the default from the
holders of at least 25% of the shares of New Preferred Stock then outstanding,
or (v) the Company fails to pay at the final stated maturity (giving effect to
any extensions thereof) the principal amount of any Indebtedness of the
Company or any Restricted Subsidiary of the Company, or the final stated
maturity of any such Indebtedness is accelerated, if the aggregate principal
amount of such Indebtedness, together with the aggregate principal amount of
any other such Indebtedness in default for failure to pay principal at the
final stated maturity (giving effect to any extensions thereof) or which has
been accelerated, aggregates $5,000,000 or more at any time, in each case,
after a 30-day period during which such default shall not have been cured or
such acceleration rescinded, then the maximum authorized number of directors
of American will be increased by two and the holders of New Preferred Stock,
voting separately as a class with the holders of shares of any Parity
Securities upon which like voting rights have been conferred and are then
exercisable, will be entitled to elect two directors for successive one-year
terms. Such voting rights will continue until such time as, in the case of a
dividend default, all dividends in arrears on the New Preferred Stock are paid
in full in cash and, in all other cases, any failure, breach or default giving
rise to such voting rights is remedied or waived by the holders of at least a
majority of the shares of New Preferred Stock then outstanding, at which time
the term of any directors elected pursuant to the provisions of this paragraph
shall terminate and the number of directors constituting the entire Board will
be reduced by the number of directors elected by the holders of the New
Preferred Stock and any Parity Securities. Each such event described in
clauses (i) through (v) above is referred to herein as a "Voting Rights
Triggering Event". The voting rights provided herein shall be the holder's
exclusive remedy at law or in equity. The Certificate of Designation contains
provisions with respect to the qualifications of any directors elected
pursuant to the provisions of this paragraph designed to ensure compliance by
American with the Communication Act and the FCC rules and regulations.
 
  The vote or consent of the holders of a majority of the outstanding shares
of New Preferred Stock and any Parity Securities, voting as a single class
(with each share being entitled to the number of votes otherwise specified, if
so specified, for such securities) without regard to series, will be required
to issue, authorize or increase the authorized amount of any obligation or
security convertible into or evidencing a right to purchase, any class or
series of Senior Securities. However, American may create additional classes
of Junior or Parity Securities, increase the authorized number of shares of
any Junior or Parity Security, or issue, authorize or increase the authorized
amount of any obligation or security (other than Senior Securities)
convertible into or evidencing a right to purchase, any Junior or Parity
Securities without the consent of any holder of the New
 
                                      62
<PAGE>
 
Preferred Stock. Prior to the Exchange Date (as defined in "Description of the
Exchange Debentures--Certain Definitions"), American shall not amend or modify
the Exchange Indenture (as defined in "Description of the Exchange
Debentures") without the affirmative vote or consent of holders of at least a
majority of the outstanding shares of New Preferred Stock, voting together as
a single class; provided, however, that American and the Trustee (as defined
in "Description of the Exchange Debentures") shall be permitted, without any
vote or consent of such holders, to effect any amendments to the Exchange
Indenture that could have been effected under the Exchange Indenture without
the consent of holders of Exchange Debentures if any Exchange Debentures were
then outstanding.
 
  Without the affirmative vote or consent of the holders of at least a
majority of the outstanding shares of New Preferred Stock, the Company shall
not consolidate or merge with or into (whether or not the Company is the
Surviving Person), or sell, assign, transfer, lease, convey or otherwise
dispose of all or substantially all of its properties or assets in one or more
related transactions, to another Person, unless:
 
    (i) the Surviving Person is a corporation organized or existing under the
  laws of the United States, any state thereof or the District of Columbia;
 
    (ii) the Surviving Person (if other than the Company) assumes all the
  obligations of the Company under the Certificate of Designation;
 
    (iii) at the time of and immediately after such Disposition, no Voting
  Rights Triggering Event shall have occurred and be continuing; and
 
    (iv) the Surviving Person shall at the time of such Disposition and after
  giving pro forma effect thereto, be permitted to incur at least $1.00 of
  additional Indebtedness pursuant to the Debt to EBITDA Ratio test described
  below under "--Certain Covenants--Limitation on Incurrence of Indebtedness
  and Issuance of Preferred Stock".
 
  Under Delaware law, holders of the New Preferred Stock will be entitled to
vote as a class upon a proposed amendment to the Restated Certificate, whether
or not entitled to vote thereon by the Restated Certificate, if the amendment
would increase or decrease the aggregate number of authorized shares of such
class, increase or decrease the par value of the shares of such class, or
alter or change the powers, preferences or special rights of the shares of
such class so as to affect them adversely.
 
CHANGE OF CONTROL
 
  The Certificate of Designation will provide that the Company will commence
an Offer to Purchase all of the outstanding shares of New Preferred Stock
within fifteen (15) days after the occurrence of a Change of Control. In the
event that the Company makes an Offer to Purchase the Exchange Preferred
Stock, the Company intends to comply with applicable securities laws and
regulations.
 
  The ability of American to purchase New Preferred Stock upon a Change of
Control is restricted under the terms of the Credit Agreements and the Note
Indentures and is prohibited during the existence of a default under any
thereof. See "Risk Factors--Factors Relating to American and its Business--
Restrictions Imposed by Terms of Indebtedness", "Indebtedness of American", and
Notes to Consolidated Financial Statements of American in the American 10-K.
 
CERTAIN COVENANTS
 
  Limitation on Incurrence of Indebtedness and Issuance of Preferred
Stock. The Certificate of Designation provides that the Company will not, and
will not permit any of its Restricted Subsidiaries to, create, incur, assume
or directly or indirectly guarantee or in any other manner become directly or
indirectly liable for ("incur") any Indebtedness (including Acquired Debt) or
issue any preferred stock, except that the Company may:
 
    (x) issue (i) preferred stock that is not Disqualified Stock at any time
  (subject to the provisions described above under "--Voting Rights" in the
  case of an issuance of preferred stock constituting Senior
 
                                      63
<PAGE>
 
  Securities), and (ii) additional shares of New Preferred Stock as described
  above under "--Dividends", and
 
    (y) incur Indebtedness or issue Disqualified Stock (subject to such
  voting rights provisions described above), if the Debt to EBITDA Ratio of
  the Company and its Restricted Subsidiaries at the time of incurrence of
  such Indebtedness or issuance of such Disqualified Stock, after giving pro
  forma effect thereto, is 7.0:1 or less.
 
  The foregoing limitations shall not apply to the incurrence of any of the
following:
 
    (i) Senior Bank Debt (including guarantees thereof by the Company's
  Subsidiaries) pursuant to either of the Credit Agreements (which include as
  a condition a maximum Total Debt to Consolidated Annual Operating Cash Flow
  ratio of 7.00:1 declining in stages over time; see "Indebtedness of
  American--Credit Agreements" for a description of the Credit Agreements);
 
    (ii) Existing Indebtedness;
 
    (iii) Indebtedness represented by (1) the Exchange Debentures, and (2)
  guarantees by Restricted Subsidiaries of (A) Senior Bank Debt and (B) any
  other Indebtedness of the Company permitted to be incurred under the
  Certificate of Designation;
 
    (iv) Refinancing Indebtedness; provided, however, that the principal
  amount of such Refinancing Indebtedness shall not exceed the principal
  amount of Indebtedness or amount of Disqualified Stock so extended,
  refinanced, renewed, replaced, substituted, defeased or refunded (plus the
  amount of expenses incurred and premiums paid in connection therewith);
 
    (v) intercompany Indebtedness between the Company and any of its
  Restricted Subsidiaries or among its Restricted Subsidiaries, or Equity
  Interests issued by a Restricted Subsidiary in conformity with the covenant
  described below under "--Limitations on Restricted Subsidiary Equity
  Interests";
 
    (vi) Hedging Obligations, including interest rate swap obligations, that
  are incurred in the ordinary course of business for the purpose of fixing
  or hedging interest rate risk with respect to any floating rate
  Indebtedness that is permitted by the terms of the Certificate of
  Designation to be outstanding; and
 
    (vii) additional Indebtedness of the Company, which may be guaranteed by
  any of its Restricted Subsidiaries, in an aggregate outstanding principal
  amount not to exceed $20,000,000 at any time.
 
  Limitation on Restricted Payments. The Certificate of Designation provides
that the Company will not, and will not permit any of its Restricted
Subsidiaries to, directly or indirectly:
 
    (i) declare or pay any dividend, or make any other distribution or
  payment, on any Junior Securities of the Company or on any Equity Interests
  of any Restricted Subsidiary (other than dividends or distributions payable
  by the Company in Junior Securities (other than Disqualified Stock) of the
  Company or by a Restricted Subsidiary in Equity Interests (other than
  Disqualified Stock) of such Restricted Subsidiary or dividends or
  distributions payable to the Company or any Restricted Subsidiary);
 
    (ii) purchase, redeem or otherwise acquire or retire for value any Junior
  Securities of the Company or any Equity Interests of any Restricted
  Subsidiary or other Affiliate of the Company (other than any Equity
  Interests owned by the Company or any Restricted Subsidiary); or
 
    (iii) make an Investment other than (a) a Permitted Investment and (b)
  Investments of the Company or any Restricted Subsidiary in the Company or
  any Restricted Subsidiary;
 
(any payment made for any of the foregoing purposes being herein referred to
as a "Restricted Payment"),
 
unless:
 
    (I) at the time of and immediately after giving effect to the proposed
  Restricted Payment, no Voting Rights Triggering Event shall have occurred
  and be continuing or would occur as a consequence thereof,
 
    (II) the Company would, at the time of such Restricted Payment and after
  giving pro forma effect thereto as if such Restricted Payment had been made
  at the beginning of the applicable four-quarter period,
 
                                      64
<PAGE>
 
  have been permitted to incur at least $1.00 of additional Indebtedness
  under the Debt to EBITDA Ratio test described above under "--Limitation on
  Incurrence of Indebtedness and Issuance of Preferred Stock", and
 
    (III) at the time of and immediately after giving effect to the proposed
  Restricted Payment (valued at its Fair Market Value, if other than cash),
  the aggregate amount of all Restricted Payments (excluding all payments,
  investments, redemptions, repurchases, retirements and other acquisitions
  described in clauses (2) and (3) of the following paragraph) declared or
  made after December 31, 1995 shall not exceed the sum of
 
      (A) an amount equal to the Company's EBITDA cumulated from December
    31, 1995 to the end of the Company's most recently ended full fiscal
    quarter, taken as a single accounting period, less 1.4 times the sum of
    (i) the Company's Consolidated Interest Expense from December 31, 1995
    to the end of the Company's most recently ended full fiscal quarter,
    taken as a single accounting period, plus (ii) all dividends or other
    distributions paid or made by the Company or any Restricted Subsidiary
    on any Disqualified Stock of the Company or any of its Subsidiaries
    during such period, plus
 
      (B) an amount equal to the aggregate sum of all net cash proceeds
    received after December 31, 1995 by the Company from the issuance and
    sale of Junior Securities (other than any Disqualified Stock and other
    than to Restricted Subsidiaries) to the extent that such proceeds are
    not used to redeem, repurchase, retire or otherwise acquire Junior
    Securities of the Company pursuant to clause (2) in the next paragraph,
    plus
 
      (C) the aggregate net proceeds received after December 31, 1995 by
    the Company and its Restricted Subsidiaries from the sale or
    disposition of any Investment other than a Permitted Investment.
 
  The foregoing provisions will not prohibit:
 
    (1) the payment of any dividend within 60 days after the date of
  declaration thereof, if at such date of declaration such payment would have
  been permitted by the provisions of the Certificate of Designation;
 
    (2) the redemption, repurchase, retirement or other acquisition for value
  of any Junior Securities of the Company in exchange for, or out of the
  proceeds of, the substantially concurrent sale (other than to the Company
  or a Restricted Subsidiary) of Junior Securities of the Company (other than
  Disqualified Stock); or
 
    (3) Restricted Payments made or paid since December 31, 1995 in an
  aggregate amount not exceeding $10,000,000.
 
  Payments made pursuant to clause (1) above shall nevertheless be considered
Restricted Payments for purposes of computing the aggregate amount of
Restricted Payments under clause (III) of the preceding paragraph. For
purposes of clause (B) of the preceding paragraph, the conversion or exchange
of Indebtedness or Disqualified Stock of the Company into Junior Securities of
the Company (other than into Equity Interests constituting Indebtedness or
Disqualified Stock) shall be deemed to be the issuance and sale by the Company
of such Junior Securities at the time of such conversion or exchange for net
cash proceeds equal to the net cash proceeds originally received by the
Company for the Indebtedness or Disqualified Stock so converted or exchanged
(or received by the Company for any other Indebtedness or Disqualified Stock
previously converted into or exchanged for such Indebtedness or Disqualified
Stock), plus any additional net cash proceeds received by the Company upon
such conversion or exchange (or such previous conversion or exchange) and less
any cash paid by the Company in connection therewith.
 
  Limitation on Restricted Subsidiary Equity Interests. The Certificate of
Designation provides that the Company will not permit any Restricted
Subsidiary to issue any Equity Interests, except for (i) Equity Interests
issued to and held by the Company or a Restricted Subsidiary, and (ii) Equity
Interests issued by a Person prior to the time that (A) such Person becomes a
Restricted Subsidiary, (B) such Person merges with or into a Restricted
Subsidiary or (C) a Restricted Subsidiary merges with or into such Person;
provided that such Equity Interests were not issued or incurred by such Person
in anticipation of the type of transaction contemplated by subclause (A), (B)
or (C).
 
                                      65
<PAGE>
 
  Provision of Financial Information. The Certificate of Designation provides
that whether or not required by the rules and regulations of the Commission,
so long as any shares of New Preferred Stock are outstanding, the Company will
furnish to the holders of New Preferred Stock:
 
  (i)  all quarterly and annual financial information that would be required to
       be contained in a filing with the Commission on Forms 10-Q and 10-K if
       the Company were required to file such Forms, including a "Management's
       Discussion and Analysis of Financial Condition and Results of
       Operations" and, with respect to the annual information only, a report
       thereon by the Company's independent certified public accountants, and
 
  (ii) all reports that would be required to be filed with the Commission on
       Form 8-K if the Company were required to file such reports.
 
  In addition, whether or not required by the rules and regulations of the
Commission, the Company will file a copy of all such information with the
Commission for public availability (unless the Commission will not accept such
filing) and make such information available to investors who request it in
writing.
 
EXCHANGE PROVISIONS
 
  The Company may, at its option, subject to certain conditions, on any
scheduled Dividend Payment Date, exchange the New Preferred Stock, in whole
but not in part, for the Exchange Debentures; provided that (i) on the date of
such exchange there are no accumulated and unpaid dividends on the New
Preferred Stock (including the dividend payable on such date) or other
contractual impediment to such exchange; (ii) there shall be funds legally
available sufficient therefor; and (iii) immediately after giving effect to
such exchange, no Default or Event of Default (each as defined in the Exchange
Indenture) would exist under the Exchange Indenture and no default or event of
default would exist under either of the Credit Agreements, either of the Note
Indentures or any other Indebtedness of the Company.
 
  Upon any exchange pursuant to the preceding paragraph, holders of
outstanding shares of New Preferred Stock will be entitled to receive, subject
to the second succeeding sentence, $1.00 principal amount of Exchange
Debentures for each $1.00 liquidation preference of New Preferred Stock held
by them. The Exchange Debentures will be issued in registered form, without
coupons. Exchange Debentures issued in exchange for New Preferred Stock will
be issued in principal amounts of $1,000 and integral multiples thereof to the
extent possible, and will also be issued in principal amounts less than $1,000
so that each holder of New Preferred Stock will receive certificates
representing the entire amount of Exchange Debentures to which such holder's
shares of New Preferred Stock entitle such holder, provided that the Company
may pay cash in lieu issuing an Exchange Debenture in a principal amount less
than $1,000. The Company will send a written notice of exchange by mail to
each holder of record of shares of New Preferred Stock not less than 30 days
nor more than 60 days before the date fixed for such exchange. On and after
the date of exchange, dividends will cease to accumulate on the outstanding
shares of New Preferred Stock, and all rights of the holder of New Preferred
Stock (except the right to receive the Exchange Debentures, an amount in cash,
to the extent applicable, equal to the accumulated and unpaid dividends to the
Exchange Date and, if the Company so elects, cash in lieu of any Exchange
Debenture that is in a principal amount that is not an integral multiple of
$1,000) will terminate. The person entitled to receive the Exchange Debentures
issuable upon such exchange will be treated for all purposes as the registered
holder of such Exchange Debentures. See "Description of the Exchange
Debentures".
 
  The ability of American to exchange New Preferred Stock for Exchange
Debentures is restricted under the terms of the Credit Agreements and the Note
Indentures and is prohibited during the existence of a default under any
thereof. See "Risk Factors--Factors Relating to American and its Business--
Restrictions Imposed by Terms of Indebtedness", "Indebtedness of American",
and Notes to Consolidated Financial Statements of American in the American 10-
K. The ability of American to exchange New Preferred Stock for Exchange
Debentures is also subject to certain conditions contained in the Exchange
Indenture relating to the Exchange Debentures and to limitations imposed under
the Delaware General Corporation Law and by applicable laws protecting the
rights of creditors.
 
                                      66
<PAGE>
 
                    DESCRIPTION OF THE EXCHANGE DEBENTURES
 
  If American elects to issue Exchange Debentures in exchange for the New
Preferred Stock, the Exchange Debentures will be issued under the Indenture
dated as of January 30, 1997 (the "Exchange Indenture") between American and
Fleet National Bank, as trustee, or any successor trustee appointed in
accordance with the terms of the Exchange Indenture, as Trustee (the
"Trustee") at a rate of $1.00 principal amount of Exchange Debentures for
$1.00 in the liquidation preference plus, without duplication, accumulated and
unpaid dividends. The following statements are subject to the detailed
provisions of the Exchange Indenture and are qualified in their entirety by
reference to the Exchange Indenture, a copy of the form of which has been
filed as an exhibit to the Registration Statement of which this Prospectus is
a part and the summary herein of certain provisions thereof does not purport
to be complete and is subject to, and is qualified in its entirety by,
reference thereto. Wherever particular provisions of the Exchange Indenture
are referred to, such provisions are incorporated by reference as a part of
the statements made, and the statements are qualified in their entirety by
such reference. Unless otherwise indicated, references under this caption to
sections, "(S)" or articles are references to the Exchange Indenture.
 
GENERAL
 
  The Exchange Debentures will represent unsecured general obligations of
American subordinate in right of payment to all Senior Debt (as defined) of
American as described under "--Subordination of Exchange Debentures" below.
The Exchange Debentures will be limited to the liquidation preference of the
New Preferred Stock, plus, without duplication, accumulated and unpaid
dividends (plus any additional Exchange Debentures issued in lieu of cash
interest as described herein), will be issued in fully registered form only in
denominations of $1,000 or any multiple thereof (other than as described in
"Description of the New Preferred Stock--Exchange Provisions" or with respect
to additional Exchange Debentures issued in lieu of cash interest as described
herein) and will mature on January 15, 2009, unless earlier redeemed at the
option of American. The Exchange Debentures will initially be issued on the
Exchange Date.
 
  Exchange Debentures will bear interest at the annual rate of 11 3/8% payable
in cash (or, on or prior to January 15, 2002, in additional Exchange
Debentures, at the option of the Company) from the Exchange Date or from the
most recent Interest Payment Date to which interest has been paid or provided
for, payable semi-annually on January 15 and July 15 of each year, commencing
on the first payment date following the Exchange Date to the person in whose
name the Exchange Debenture (or any predecessor Exchange Debenture) is
registered at the close of business on the preceding January 1 or July 1, as
the case may be. The Exchange Debentures will bear interest on overdue
principal and premium, if any, and, to the extent permitted by law, overdue
interest at the rate per annum set forth in the first sentence of this
paragraph plus 2%. Interest on the Exchange Debentures will be computed on the
basis of a 360-day year of twelve 30-day months. ((S)(S) 301, 307 and 310)
 
  Principal of, and premium, if any, and interest on the Exchange Debentures
will be payable, and the Exchange Debentures may be presented for registration
of transfer and exchange, at the office or agency of the Company maintained
for that purpose in the Borough of Manhattan, The City of New York, provided
that at the option of the Company, payment of interest on the Exchange
Debentures may be made by check mailed to the address of the Person entitled
thereto as it appears in the Securities Register or, at the timely election of
a registered owner of greater than $1,000,000 principal amount of the Exchange
Debentures, by wire transfer. Until otherwise designated by the Company, such
office or agency will be the corporate trust office of the Trustee, which will
act as Paying Agent and Registrar. ((S)(S) 301, 305 and 1002)
 
  The Exchange Debentures will, except as otherwise noted above, be issued
only in fully registered form, without coupons, in denominations of $1,000 and
any integral multiple thereof. ((S) 302) No service change will be made for
any registration of transfer or exchange of Exchange Debentures, but the
Company may require payment of a sum sufficient to cover any tax or other
governmental charge payable in connection therewith. ((S) 305)
 
                                      67
<PAGE>
 
OPTIONAL REDEMPTION
 
  The Exchange Debentures will be subject to redemption, at the option of the
Company, in whole or in part, at any time on or after January 15, 2002 and
prior to maturity, upon not less than 30 nor more than 60 days notice mailed
to each Holder of Exchange Debentures to be redeemed at such Holder's address
appearing in the Security Register, in amounts of $1,000 or an integral
multiple of $1,000, at the following Redemption Prices (expressed as
percentages of principal amounts) plus accrued and unpaid interest, if any, to
but excluding the Redemption Date (subject to the right of Holders of record
on the relevant Regular Record Date to receive interest due on an Interest
Payment Date that is on or prior to the Redemption Date), if redeemed during
the 12-month period beginning January 15 of the years indicated:
 
<TABLE>
<CAPTION>
     YEAR                                                       REDEMPTION PRICE
     ----                                                       ----------------
     <S>                                                        <C>
     2002......................................................     105.688%
     2003......................................................     104.550
     2004......................................................     103.413
     2005......................................................     102.275
     2006......................................................     101.138
     2007 and thereafter.......................................     100.000
</TABLE>
 
  Notwithstanding the foregoing, at any time prior to January 15, 2000, the
Company may redeem up to 35% of the outstanding Exchange Debentures from the
net proceeds of a Public or Rule 144A Equity Offering, in cash, within 60 days
of any such sale upon not less than 30 nor more than 60 days' notice mailed to
each Holder of Exchange Debentures to be redeemed at such Holder's address
appearing in the Security Register, in amounts of $1,000, or any integral
multiple of $1,000, at a Redemption Price equal to 111.375% of the principal
amount thereof plus, in each case, accrued and unpaid interest, if any, to the
Redemption Date; provided, however, that after any such redemption, the
aggregate principal amount of the Exchange Debentures outstanding must equal
at least $130.0 million. ((S) 1101). If less than all the Exchange Debentures
are to be redeemed, the Trustee shall select, in such manner as it shall deem
fair and appropriate, the particular Exchange Debentures to be redeemed or any
portion thereof that is an integral multiple of $1,000. ((S) 1104).
 
  The Exchange Debentures will not have the benefit of any sinking fund.
 
  The ability of American to redeem Exchange Debentures is restricted under
the terms of the Credit Agreements and the Note Indentures and is prohibited
during the existence of any default pursuant under any thereof. See "Risk
Factors--Factors Relating to American and its Business--Restrictions Imposed
by Terms of Indebtedness", and Notes to Consolidated Financial Statements of
American in the American 10-K.
 
SUBORDINATION OF EXCHANGE DEBENTURES
 
  The Exchange Debentures will, to the extent set forth in the Exchange
Indenture, be subordinate in right of payment to the prior payment in full in
cash or Cash Equivalents of all Senior Debt. Upon any payment or distribution
of assets to creditors upon any liquidation, dissolution, winding up,
reorganization, assignment for the benefit of creditors, marshaling of assets
or any bankruptcy, insolvency or similar proceedings of the Company, the
holders of Senior Debt will first be entitled to receive any payment in
respect of the principal of (and premium, if any) or interest on the Exchange
Debentures. In the event that notwithstanding the foregoing, the Trustee or
the Holder of any Exchange Debenture receives any payment or distribution of
assets of the Company of any kind or character, before all the Senior Debt is
paid in full in cash or Cash Equivalents, then such payment or distribution
will be required to be paid over or delivered forthwith to the trustee in
bankruptcy or other person making payment or distribution of assets of the
Company for application to the payment of all Senior Debt remaining unpaid, to
the extent necessary to pay the Senior Debt in full in cash or Cash
Equivalents. ((S) 1202).
 
  In the event that any of the Exchange Debentures are declared due and
payable prior to their stated maturity, the Holders of Senior Debt shall be
entitled to receive payment in full in cash or Cash Equivalents of all Senior
 
                                      68
<PAGE>
 
Debt before the Holders of the Exchange Debentures shall be entitled to
receive any payment on account of the principal of (or premium, if any) or
interest on the Exchange Debentures or on account of the purchase or
redemption or other acquisition of the Exchange Debentures.
 
  The Company may not make any payments on account of the Exchange Debentures
or on account of the purchase, redemption or other acquisition of Exchange
Debentures following the maturity (on the due date, upon acceleration or
otherwise) of any Senior Debt until such Senior Debt is paid in full in cash
or Cash Equivalents. The Company also may not make any payments on the account
of the Exchange Debentures or on account of the purchase or redemption or
other acquisition of Exchange Debentures if there shall have occurred and be
continuing a default in the payment of Senior Debt (a "Payment Default"). In
addition, if any default (other than a Payment Default) with respect to any
Designated Senior Debt permitting the holders thereof (or a trustee on behalf
thereof) to accelerate the maturity thereof (a "Monetary Default") has
occurred and is continuing and the Company and the Trustee have received
written notice thereof from the representatives of holders of such Designated
Senior Debt, then the Company may not make any payments (other than the
payments previously made pursuant to the provisions described under "--
Defeasance") on account of the Exchange Debentures or on account of the
purchase or redemption or other acquisition of Exchange Debentures for a
period (a "blockage period") commencing on the date the Company and the
Trustee receive such written notice and ending on the earlier of (x) 179 days
after such date and (y) the date, if any, on which the Designated Senior Debt
to which such default relates is discharged or such default is waived or
otherwise cured. In any event, not more than one blockage period may be
commenced during any period of 360 consecutive days when no blockage period is
in effect. No Nonmonetary Default that existed or was continuing on the date
of the commencement of any blockage period with respect to the Designated
Senior Debt initiating such blockage period will be, or can be, made the basis
for the commencement of a subsequent blockage period, unless such default has
been cured or waived for a period of not less than 180 consecutive days. In
the event that, notwithstanding the foregoing, the Company makes any payment
to the Trustee or the Holder of any Exchange Debenture prohibited by these
subordination provisions, then such payment will be required to be paid over
and delivered forthwith to the holders of the Senior Debt remaining unpaid, to
the extent necessary to pay in full all the Senior Debt. ((S)1203)
 
  By reason of such subordination, in the event of insolvency, creditors of
the Company who are not holders of Senior Debt may recover less, ratably, than
holders of Senior Debt and may recover more, ratably, than the Holders of the
Exchange Debentures.
 
  The subordination provisions described above will cease to be applicable to
the Exchange Debentures upon any defeasance or covenant defeasance of the
Exchange Debentures as described under "--Defeasance". (Article Thirteen)
 
  The Company expects to incur Indebtedness under the Credit Agreements which
will constitute Senior Bank Debt and the Company may from time to time incur
additional Indebtedness constituting Senior Debt. The Exchange Indenture does
not prohibit or limit the incurrence of additional Senior Debt, provided that
the incurrence of such Senior Debt is otherwise permitted thereunder including
under the limitations described under "--Certain Covenants--Limitation on
Incurrence of Indebtedness and Issuance of Preferred Stock" below.
 
  The Exchange Debentures will be subordinate to the American Notes, the
American-EZ Notes and the Credit Agreements and, unless otherwise designated
by the Company prior to the issuance thereof, the Convertible Exchange
Debentures. At December 31, 1996, Senior Debt of American on a historical and
pro forma basis equaled the corresponding amounts of total long-term debt set
forth in the table under "Capitalization".
 
CERTAIN COVENANTS
 
  The Exchange Indenture contains, among others, the following covenants.
 
                                      69
<PAGE>
 
  Limitation on Certain Asset Sales. The Exchange Indenture provides that
neither the Company nor any of its Restricted Subsidiaries will:
 
    (i) sell, lease, convey or otherwise dispose of any assets (including by
  way of a sale-and-leaseback) other than in the ordinary course of business,
  or
 
    (ii) issue or sell Equity Interests of any of its Restricted
  Subsidiaries,
 
in each case, whether in a single transaction or a series of related
transactions, to any Person (other than an issuance, sale, lease, conveyance
or disposal by a Restricted Subsidiary to the Company or one of its Restricted
Subsidiaries or an Asset Swap permitted by the covenant described below under
"--Limitation on Asset Swaps"), for Net Proceeds in excess of $1,000,000 (each
of the foregoing, an "Asset Sale"), unless:
 
    (x) the Company or such Restricted Subsidiary, as the case may be,
  receives consideration at the time of such Asset Sale at least equal to the
  Fair Market Value of the assets or Equity Interests sold or otherwise
  disposed of;
 
    (y) at least 80% of such consideration is in the form of cash, provided,
  however, that the following will be deemed to be cash for purposes of this
  covenant:
 
      (A) the amount of any Senior Debt that is assumed by the transferee
    of any such assets, and
 
      (B) any notes or other obligations received by the Company or any
    such Restricted Subsidiary from a transferee that are immediately
    converted by the Company or such Restricted Subsidiary into cash, and
 
    (z) if such Asset Sale includes Equity Interests of any Restricted
  Subsidiary, 100% of the Equity Interests of such Restricted Subsidiary
  owned by the Company or any other Restricted Subsidiary is sold or
  otherwise disposed of in such Asset Sale.
 
  Following any Asset Sale, the Company may elect to apply the Net Proceeds
from such Asset Sale, within 360 days of the Asset Sale, (a) to reduce
permanently Senior Bank Debt (or in the event that Senior Bank Debt is
extended under a revolving credit or similar facility, to reduce permanently
the aggregate commitments thereunder and to make any principal payments on the
Senior Bank Debt required or permitted thereby) as then in effect or (b) to
acquire Broadcast Assets. Pending the final application of any such Net
Proceeds, the Company may reduce temporarily Senior Bank Debt or temporarily
invest such Net Proceeds in any manner permitted by the Exchange Indenture.
Any Net Proceeds from an Asset Sale not applied to the payment of or reduction
of commitments under the Senior Bank Debt or to the acquisition of Broadcast
Assets or invested as provided in the first sentence of this paragraph, upon
expiration of such 360-day period or such earlier date as the Company decides
not to so apply or invest such Net Proceeds, will be deemed to constitute
"Excess Proceeds". Whenever Excess Proceeds minus the aggregate purchase price
of the Exchange Debentures which have been the subject of any previous Offer
to Purchase ("Net Excess Proceeds") exceeds $5,000,000, the Company will
commence an Offer to Purchase within thirty (30) days after the date on which
the Net Excess Proceeds exceeded $5,000,000. Such Offer to Purchase shall be
for a principal amount of Outstanding Exchange Debentures having an aggregate
purchase price equal to Net Excess Proceeds. (Section 1008)
 
  Limitation on Asset Swaps. The Exchange Indenture provides that neither the
Company nor any Restricted Subsidiary will engage in any Asset Swaps, unless:
 
    (i) at the time of entering into the agreement to swap assets and
  immediately after giving effect to the proposed Asset Swap, no Default or
  Event of Default shall have occurred and be continuing or would occur as a
  consequence thereof;
 
    (ii) the Company would, at the time of entering into the agreement to
  swap assets and after giving pro forma effect to the proposed Asset Swap,
  as if such Asset Swap had occurred at the beginning of the applicable four-
  quarter period, have been permitted to incur at least $1.00 of additional
  Indebtedness under the Debt to EBITDA Ratio test described below under "--
  Limitation on Incurrence of Indebtedness and Issuance of Preferred Stock";
 
 
                                      70
<PAGE>
 
    (iii) the respective Fair Market Values of the assets being purchased and
  sold by the Company or any of its Restricted Subsidiaries are substantially
  the same at the time of entering into the agreement to swap assets; and
 
    (iv) at the time of the consummation of the proposed Asset Swap, the
  percentage of any decline in the Fair Market Value of the asset or assets
  being acquired by the Company and its Restricted Subsidiaries shall not be
  significantly greater than the percentage of any decline in the Fair Market
  Value of the assets being disposed of by the Company, calculated from the
  time the agreement to swap assets was entered into. (Section 1009)
 
  Limitation on Restricted Payments. The Exchange Indenture provides that
neither the Company nor any Restricted Subsidiary will, directly or
indirectly:
 
    (i) declare or pay any dividend, or make any other distribution or
  payment, on any Equity Interests of the Company or any of its Restricted
  Subsidiaries (other than dividends or distributions payable in Equity
  Interests (other than Indebtedness or Disqualified Stock) of the Company or
  such Restricted Subsidiary or dividends or distributions payable to the
  Company or any Restricted Subsidiary);
 
    (ii) purchase, redeem or otherwise acquire or retire for value any Equity
  Interests of the Company or any Restricted Subsidiary or other Affiliate of
  the Company (other than any Equity Interests owned by the Company or any
  Restricted Subsidiary);
 
    (iii) purchase, redeem, defease, or otherwise acquire or retire for value
  any Indebtedness that is subordinated in right of payment to, or pari passu
  with, the Exchange Debentures (other than with the proceeds of Refinancing
  Indebtedness permitted under clause (d) of the last paragraph under "--
  Limitation on Incurrence of Indebtedness and Issuance of Preferred Stock"
  below); or
 
    (iv) make an Investment other than (a) a Permitted Investment or (b)
  Investments of the Company or any Restricted Subsidiary in the Company or
  any Restricted Subsidiary;
 
(any payment made for any of the foregoing purposes being herein referred to
as a "Restricted Payment"),
 
unless:
 
    (I) at the time of and immediately after giving effect to the proposed
  Restricted Payment, no Default or Event of Default shall have occurred and
  be continuing or would occur as a consequence thereof,
 
    (II) the Company would, at the time of such Restricted Payment and after
  giving pro forma effect thereto as if such Restricted Payment had been made
  at the beginning of the applicable four-quarter period, have been permitted
  to incur at least $1.00 of additional Indebtedness under the Debt to EBITDA
  Ratio test described below under "--Limitation on Incurrence of
  Indebtedness and Issuance of Preferred Stock", and
 
    (III) at the time of and immediately after giving effect to the proposed
  Restricted Payment (valued at its Fair Market Value, if other than cash),
  the aggregate amount of all Restricted Payments (excluding all payments,
  investments, redemptions, repurchases, retirements and other acquisitions
  described in clauses (2), (3) and (4) of the following paragraph) declared
  or made after December 31, 1995 shall not exceed the sum of
 
      (A) an amount equal to the Company's EBITDA cumulated from December
    31, 1995 to the end of the Company's most recently ended full fiscal
    quarter, taken as a single accounting period, less 1.4 times the sum of
    (i) the Company's Consolidated Interest Expense from December 31, 1995
    to the end of the Company's most recently ended full fiscal quarter,
    taken as a single accounting period, plus (ii) all dividends or other
    distributions paid or made by the Company or any Restricted Subsidiary
    on any Disqualified Stock of the Company or any of its Subsidiaries
    during such period, plus
 
      (B) an amount equal to the aggregate sum of all net cash proceeds
    received after December 31, 1995 by the Company from the issuance and
    sale of Equity Interests (other than any Indebtedness or Disqualified
    Stock and other than to Restricted Subsidiaries) to the extent that
    such proceeds are not used to redeem, repurchase, retire or otherwise
    acquire Equity Interests of the Company pursuant to clause (2) in the
    next paragraph, plus
 
 
                                      71
<PAGE>
 
      (C) the aggregate net proceeds received after December 31, 1995 by
    the Company and its Restricted Subsidiaries from the sale or
    disposition of any Investment other than a Permitted Investment.
 
  The foregoing provisions will not prohibit:
 
      (1) the payment of any dividend within sixty (60) days after the date
    of declaration thereof, if at such date of declaration such payment
    would have complied with the provisions of the Exchange Indenture;
 
      (2) the redemption, repurchase, retirement or other acquisition for
    value of any Equity Interests of the Company in exchange for, or out of
    the proceeds of, the substantially concurrent sale (other than to the
    Company or a Restricted Subsidiary) of Equity Interests of the Company
    (other than any Indebtedness or Disqualified Stock);
 
      (3) Payments of Senior Debt or pursuant to any guarantee by any
    Restricted Subsidiary of Senior Debt; or
 
      (4) Restricted Payments made or paid since December 31, 1995 in an
    aggregate amount not exceeding $10,000,000.
 
Payments made pursuant to clause (1) above shall nevertheless be considered
Restricted Payments for purposes of computing the aggregate amount of
Restricted Payments under clause (III) of the preceding paragraph. For
purposes of clause (B) of the preceding paragraph, the conversion or exchange
of Indebtedness or Disqualified Stock of the Company into Equity Interests of
the Company (other than into Equity Interests constituting Indebtedness or
Disqualified Stock) shall be deemed to be the issuance and sale by the Company
of such Equity Interests at the time of such conversion or exchange for net
cash proceeds equal to the net cash proceeds originally received by the
Company for the Indebtedness or Disqualified Stock so converted or exchanged
(or received by the Company for any other Indebtedness or Disqualified Stock
previously converted into or exchanged for such Indebtedness or Disqualified
Stock), plus any additional net cash proceeds received by the Company upon
such conversion or exchange (or such previous conversion or exchange) and less
any cash paid by the Company in connection therewith. (Section 1010)
 
  Limitation on Incurrence of Indebtedness and Issuance of Preferred
Stock. The Exchange Indenture provides that neither the Company nor any
Restricted Subsidiary will create, incur, assume or directly or indirectly
guarantee or in any other manner become directly or indirectly liable for
("incur") any Indebtedness (including Acquired Debt) or issue any preferred
stock, except that the Company may:
 
    (i) issue preferred stock that is not Disqualified Stock at any time, and
 
    (ii) incur Indebtedness or issue Disqualified Stock, if the Debt to
  EBITDA Ratio of the Company and its Restricted Subsidiaries at the time of
  incurrence of such Indebtedness or issuance of such Disqualified Stock,
  after giving pro forma effect thereto, is 7.0:1 or less; provided, however,
  that any such Indebtedness (other than Senior Debt) incurred by the Company
  shall, at the time of incurrence, have a Weighted Average Life to Maturity
  equal to or greater than the Weighted Average Life to Maturity of the
  Exchange Debentures.
 
  The foregoing limitations shall not apply to the incurrence of any of the
following:
 
    (a) Senior Bank Debt (including guarantees thereof by the Company's
  Subsidiaries) pursuant to either of the Credit Agreements (which include as
  a condition a maximum Total Debt to Consolidated Annual Operating Cash Flow
  ratio 7.00:1 declining in stages over time; see "Indebtedness of American--
  Credit Agreements" for a description of the Credit Agreements);
 
    (b) Existing Indebtedness;
 
    (c) Indebtedness represented by (1) the Exchange Debentures and (2)
  guarantees by Restricted Subsidiaries of (x) Senior Bank Debt and (y) any
  other Senior Debt permitted to be incurred by the Company under the terms
  of the Exchange Indenture;
 
 
                                      72
<PAGE>
 
    (d) Refinancing Indebtedness, provided, however, that
 
      (1) the principal amount of such Refinancing Indebtedness shall not
    exceed the principal amount of Indebtedness or amount of Disqualified
    Stock so extended, refinanced, renewed, replaced, substituted, defeased
    or refunded (plus the amount of expenses incurred and premiums paid in
    connection therewith),
 
      (2) with respect to Refinancing Indebtedness of any Indebtedness
    other than Senior Debt or Disqualified Stock, the Refinancing
    Indebtedness shall have a Weighted Average Life to Maturity equal to or
    greater than the Weighted Average Life to Maturity of the Indebtedness
    being extended, refinanced, renewed, replaced, substituted, defeased or
    refunded, and
 
      (3) with respect to Refinancing Indebtedness of Indebtedness other
    than Senior Debt or any Disqualified Stock incurred by the Company,
    such Refinancing Indebtedness shall rank no more senior, and shall be
    at least as subordinated, in right of payment to the Exchange
    Debentures as the Indebtedness being extended, refinanced, replaced,
    renewed, substituted, defeased or refunded;
 
    (e) intercompany Indebtedness between the Company and any of its
  Restricted Subsidiaries or among its Restricted Subsidiaries, or Equity
  Interests issued by a Restricted Subsidiary in conformity with the covenant
  described below under "--Limitation on Restricted Subsidiary Equity
  Interests";
 
    (f) Hedging Obligations, including interest rate swap obligations, that
  are incurred in the ordinary course of business for the purpose of fixing
  or hedging interest rate risk with respect to any floating rate
  Indebtedness that is permitted by the terms of this Indenture to be
  outstanding; and
 
    (g) additional Indebtedness of the Company, which may be guaranteed by
  any of its Restricted Subsidiaries, in an aggregate outstanding principal
  amount not to exceed $20,000,000 at any time. (Section 1011)
 
  Limitation on Liens. The Exchange Indenture provides that neither the
Company nor any Restricted Subsidiary will, directly or indirectly, create,
incur, assume or suffer to exist any Lien (other than Permitted Liens) on any
asset now owned or hereafter acquired, or any income or profits therefrom or
assign or convey any right to receive income therefrom to secure any
Indebtedness. (Section 1012)
 
  Limitation on Restricted Subsidiary Equity Interests. The Exchange Indenture
provides that the Company will not permit any Restricted Subsidiary to issue
any Equity Interests, except for (i) Equity Interests issued to and held by
the Company or a Restricted Subsidiary, and (ii) Equity Interests issued by a
Person prior to the time that (A) such Person becomes a Restricted Subsidiary,
(B) such Person merges with or into a Restricted Subsidiary or (C) a
Restricted Subsidiary merges with or into such Person; provided that such
Equity Interests were not issued or incurred by such Person in anticipation of
the type of transaction contemplated by subclause (A), (B) or (C). (Section
1013)
 
  Limitation on Dividend and Other Payment Restrictions Affecting Restricted
Subsidiaries. The Exchange Indenture provides that neither the Company nor any
Restricted Subsidiary will, directly or indirectly, create or otherwise cause
or suffer to exist or become effective any encumbrance or restriction on the
ability of any Restricted Subsidiary to:
 
    (i) (a) pay dividends or make any other distributions to the Company or
  any other Restricted Subsidiary (1) on its Capital Stock or (2) with
  respect to any other interest or participation in, or measured by, its
  profits, or (b) pay any Indebtedness owed to the Company or any other
  Restricted Subsidiary,
 
    (ii) make loans or advances to the Company or any other Restricted
  Subsidiary, or
 
    (iii) transfer any of its properties or assets to the Company or any
  other Restricted Subsidiary,
 
except for such encumbrances or restrictions existing under or by reason of:
 
    (t) any Existing Indebtedness;
 
    (u) the Credit Agreements as in effect on the Issue Date, and any
  amendments, modifications, restatements, renewals, increases, supplements,
  refundings, replacements or refinancings thereof, provided,
 
                                      73
<PAGE>
 
  however, that such amendments, modifications, restatements, renewals,
  increases, supplements, refundings, replacements or refinancings are no
  more restrictive in the aggregate with respect to such dividend and other
  payment restrictions than those contained in the Credit Agreements (or, if
  more restrictive, the Exchange Indenture) immediately prior to any such
  amendment, modification, restatement, renewal, increase, supplement,
  refunding, replacement or refinancing;
 
    (v) applicable law;
 
    (w) any instrument governing Indebtedness or Capital Stock of a Person
  acquired by the Company or any of its Restricted Subsidiaries as in effect
  at the time of such acquisition (except to the extent such Indebtedness was
  incurred in connection with or in contemplation of such acquisition),
  provided, however, that (1) such restriction is not applicable to any other
  Person (other than any Subsidiary of such Person) or the properties or
  assets of any other Person (other than any Subsidiary of such Person), and
  (2) the consolidated net income (loss) of such acquired Person (or any such
  Subsidiary) for any period prior to such acquisition shall not be taken
  into account in determining whether such acquisition was permitted by the
  terms of the Exchange Indenture;
 
    (x) by reason of customary non-assignment provisions in leases entered
  into in the ordinary course of business and consistent with past practices;
 
    (y) Purchase Money Indebtedness for property acquired in the ordinary
  course of business that only impose restrictions on the property so
  acquired; or
 
    (z) Refinancing Indebtedness permitted under the Exchange Indenture,
  provided, however, that the restrictions contained in the agreements
  governing such Refinancing Indebtedness are no more restrictive in the
  aggregate than those contained in the agreements governing the Indebtedness
  being refinanced immediately prior to such refinancing. (Section 1014)
 
  Transactions with Affiliates. The Exchange Indenture provides that neither
the Company nor any Restricted Subsidiary will, directly or indirectly, sell,
lease, transfer or otherwise dispose of any of its properties or assets to, or
purchase any property or assets from, or enter into any contract, agreement,
understanding, loan, advance or guarantee with, or for the benefit of, any
Affiliate of the Company or any Restricted Subsidiary (each of the foregoing,
an "Affiliate Transaction"), unless:
 
    (i) such Affiliate Transaction is on terms that are no less favorable to
  the Company or the relevant Restricted Subsidiary than those that would
  have been obtained in a comparable transaction by the Company or such
  Restricted Subsidiary with a non-Affiliated Person;
 
    (ii) such Affiliate Transaction is approved by a majority of
  disinterested members of the Company's Board of Directors; and
 
    (iii) the Company delivers to the Trustee--
 
      (a) with respect to any Affiliate Transaction involving aggregate
    payments in excess of $1,000,000, an Officers' Certificate certifying
    that such Affiliate Transaction complies with clause (i) above and such
    Affiliate Transaction has been approved by a majority of the
    disinterested members of the Company's Board of Directors; and
 
      (b) with respect to any Affiliate Transaction (or series of related
    transactions) with an aggregate value in excess of $5,000,000 an
    opinion from a nationally recognized investment bank to the effect that
    the transaction is fair to the Company or the Restricted Subsidiary, as
    the case may be, from a financial point of view;
 
provided, however, that none of the following shall constitute an Affiliate
Transaction:
 
    (x) employment arrangements (including customary benefits thereunder)
  entered into by the Company or any of its Restricted Subsidiaries in the
  ordinary course of business and consistent with the past practice of the
  Company or such Restricted Subsidiary,
 
 
                                      74
<PAGE>
 
    (y) transactions solely between or among the Company and its Restricted
  Subsidiaries or solely between or among Restricted Subsidiaries, and
 
    (z) transactions permitted by the provisions of the restrictions
  described under "--Limitation on Restricted Payments". (Section 1015)
 
  Provision of Financial Information. The Exchange Indenture provides that
whether or not required by the rules and regulations of the Commission, so
long as any Exchange Debentures are outstanding, the Company will furnish to
the Trustee and to the Holders of Exchange Debentures:
 
    (i) all quarterly and annual financial information that would be required
  to be contained in a filing with the Commission on Forms 10-Q and 10-K if
  the Company were required to file such Forms, including a "Management's
  Discussion and Analysis of Financial Condition and Results of Operations"
  and, with respect to the annual information only, a report thereon by the
  Company's independent certified public accountants, and
 
    (ii) all reports that would be required to be filed with the Commission
  on Form 8-K if the Company were required to file such reports.
 
In addition, whether or not required by the rules and regulations of the
Commission, the Company will file a copy of all such information with the
Commission for public availability (unless the Commission will not accept such
filing) and make such information available to investors who request it in
writing. (Section 1016)
 
  Change of Control. The Exchange Indenture provides that the Company will
commence an Offer to Purchase all of the Outstanding Exchange Debentures
within fifteen (15) days after the occurrence of a Change of Control. (Section
1017) In the event that the Company makes an Offer to Purchase the Exchange
Debentures, the Company intends to comply with applicable securities laws and
regulations.
 
  The ability of American to purchase Exchange Debentures upon a Change of
Control is restricted under the terms of the Credit Agreements and the Note
Indenture and is prohibited during the existence of a default under any
thereof. See "Risk Factors--Factors Relating to American and its Business--
Restrictions Imposed by Terms of Indebtedness", "Indebtedness of American",
and the Notes to Consolidated Financial Statements of American in the American
10-K.
 
LIMITATION ON MERGER, CONSOLIDATION AND SALE OF ASSETS
 
  The Exchange Indenture provides that the Company may not consolidate or
merge with or into (whether or not the Company is the Surviving Person), or
sell, assign, transfer, lease, convey or otherwise dispose of all or
substantially all of its properties or assets in one or more related
transactions, to another Person, unless:
 
    (i) the Surviving Person is a corporation organized or existing under the
  laws of the United States, any state thereof or the District of Columbia;
 
    (ii) the Surviving Person (if other than the Company) assumes all the
  obligations of the Company under the Exchange Debentures and the Exchange
  Indenture pursuant to a supplemental indenture in a form reasonably
  satisfactory to the Trustee;
 
    (iii) at the time of and immediately after such Disposition, no Default
  or Event of Default shall have occurred and be continuing; and
 
    (iv) the Surviving Person shall at the time of such Disposition and after
  giving pro forma effect thereto, be permitted to incur at least $1.00 of
  additional Indebtedness pursuant to the Debt to EBITDA Ratio test described
  above under "--Limitation on Incurrence of Indebtedness and Issuance of
  Preferred Stock". (Article Eight)
 
EVENTS OF DEFAULT AND REMEDIES
 
  The following will be Events of Default under the Exchange Indenture; (a)
failure to pay (whether or not prohibited by the subordination provisions of
the Indenture) principal of (or premium, if any, on) any Exchange
 
                                      75
<PAGE>
 
Debenture when due; (b) failure to pay (whether or not prohibited by the
subordination provisions of the Exchange Indenture) any interest on any
Exchange Debenture when due, continued for 30 days; (c) default in the payment
(whether or not prohibited by the subordination provisions of the Exchange
Indenture) of principal and interest on Exchange Debentures required to be
purchased pursuant to an Offer to Purchase as described above under "--Certain
Covenants--Change of Control" and "--Limitation on Certain Asset Sales" when
due and payable; (d) failure to perform or comply with the provisions
described above under "--Limitation on Merger, Consolidation and Sale of
Assets"; (e) failure to perform any other covenant or agreement of the Company
under the Exchange Indenture or the Exchange Debentures continued for 60 days
after written notice to the Company by the Trustee or Holders of at least 25%
in aggregate principal amount of Exchange Debentures then outstanding; (f)
default under the terms of any instrument evidencing or securing Indebtedness
for money borrowed by the Company or any Restricted Subsidiary having an
outstanding principal amount of $5,000,000 individually or in the aggregate
which default results in the acceleration of the payment of such Indebtedness
or constitutes the failure to pay such Indebtedness when due at final maturity
and such failure to pay such Indebtedness (whether at maturity or upon
becoming due or being declared due and payable) shall have continued for 30
days; (g) the rendering of a final judgement or judgments (not subject to
appeal) against the Company or any Restricted Subsidiary in an amount in
excess of $5,000,000 which remains undischarged or unstayed for a period of 60
days after the date on which the right to appeal has expired; and (h) certain
events of bankruptcy, insolvency or reorganization affecting the company or
any Restricted Subsidiary. ((S) 501) Subject to the provisions of the Exchange
Indenture relating to the duties of the Trustee in case an Event of Default
(as defined) shall occur and be continuing, the Trustee will be under no
obligation to exercise any of its rights or powers under the Exchange
Indenture at the request or direction of any of the Holders, unless such
Holders shall have offered to the Trustee reasonable indemnity. ((S) 603)
Subject to such provisions for the indemnification of the Trustee, the Holders
of a majority in aggregate principal amount of the Exchange Debentures then
outstanding will have the right to direct the time, method and place of
conducting any proceeding for any remedy available to the Trustee or
exercising any trust or power conferred on the Trustee. ((S) 512)
 
  If an Event of Default (other than an Event of Default described in Clause
(h) above) shall occur and be continuing, either the Trustee or the Holders of
at least 25% in aggregate principal amount of the Exchange Debentures
outstanding may accelerate the maturity of all Exchange Debentures; provided,
however, that after such acceleration, but before a judgment or decree based
on acceleration, the Holders of a majority in aggregate principal amount of
Exchange Debentures then outstanding may, under certain circumstances, rescind
and annul such acceleration if all Events of Default, other than the non-
payment of accelerated principal, have been cured or waived as provided in the
Exchange Indenture. If an Event of Default specified in Clause (h) above
occurs, the Exchange Debentures then outstanding will ipso facto become
immediately due and payable without any declaration or other act on the part
of the Trustee or any Holder. ((S) 502) For information as to waiver of
defaults, see "--Modifications and Waiver" below.
 
  No holder of any Exchange Debenture will have any right to institute any
proceeding with respect to the Exchange Indenture or for any remedy
thereunder, unless such Holder shall have previously given to the Trustee
written notice of a continuing Event of Default and unless also the Holders of
at least 25% in aggregate principal amount of the Exchange Debentures then
outstanding shall have made written request, and offered reasonable indemnity,
to the Trustee to institute such proceeding as trustee and the Trustee shall
not have received from the Holders of a majority in aggregate principal amount
of the Exchange Debentures then outstanding a direction inconsistent with such
request and shall have failed to institute such proceeding within 60 days.
((S) 507) However, such limitations do not apply to a suit instituted by a
Holder of an Exchange Debenture for enforcement of payment of the principal of
and premium, if any, or interest on such Exchange Debenture on or after the
respective due dates stated in such Exchange Debenture. ((S) 508)
 
  The Company will be required to furnish to the Trustee quarterly a statement
as to the performance by the Company of certain of its obligations under the
Exchange Indenture and as to any default in such performance. ((S) 1018)
 
 
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<PAGE>
 
GOVERNING LAW
 
  The Exchange Indenture and the Exchange Debentures will be governed by the
laws of the State of New York.
 
DEFEASANCE
 
  The Exchange Indenture will provide that, at the option of the Company, (A)
if applicable, the Company will be discharged from any and all obligations in
respect of the Exchange Debentures then outstanding (including the provisions
described above under "--Subordination of Exchange Debentures") or (B) if
applicable, the Company may omit to comply with certain restrictive covenants
and the provisions described above under "--Subordination of Exchange
Debentures", and that such omission shall not be deemed to be an Event of
Default under the Exchange Indenture and the Exchange Debenture, in the case
of either clause (A) or (B) upon irrevocable deposit with the Trustee, in
trust, of money or U.S. Government Obligations which will provide money in an
amount sufficient in the opinion of a nationally recognized firm of
independent certified public accountants to pay the principal of and premium,
if any, and each installment of interest, if any, on the Exchange Debentures
then outstanding. With respect to clause (B), the obligations under the
Exchange Indenture other than with respect to such covenants and the Events of
Default other than the Events of Default relating to such covenants above
shall remain in full force and effect. Such trust may only be established if,
among other things (i) with respect to clause (A), the Company has received
from, or there has been published by, the Internal Revenue Service a ruling or
there has been a change in law, which in the Opinion of Counsel provides that
Holders of the Exchange Debentures will not recognize gain or loss for Federal
income tax purposes as a result of such deposit, defeasance and discharge and
will be subject to Federal income tax on the same amount, in the same manner
and at the same times as would have been the case if such deposit, defeasance
and discharge had not occurred; or, with respect to clause (B), the Company
has delivered to the Trustee an Opinion of Counsel to the effect that the
Holders of the Exchange Debentures will not recognize gain or loss for Federal
income tax purposes as a result of such deposit and defeasance and will be
subject to Federal income tax on the same amount, in the same manner and at
the same times as would have been the case if such deposit and defeasance had
not occurred; (ii) no Event of Default or event that with the passing of time
or the giving of notice, or both, shall constitute an Event of Default shall
have occurred or be continuing; (iii) the Company has delivered to the Trustee
an Opinion of Counsel to the effect that such deposit shall not cause the
Trustee or the Trust so created to be subject to the Investment Company Act of
1940; and (iv) certain other customary conditions precedent are satisfied.
(Article Thirteen)
 
MODIFICATION AND WAIVER
 
  Modifications and amendments of the Exchange Indenture may be made by the
Company and the Trustee with the consent of the Holders of a majority in
aggregate principal amount of the Exchange Debentures then outstanding;
provided, however, that no such modification or amendment may, without the
consent of the Holder of each Exchange Debenture then outstanding affected
thereby, (a) change the Stated Maturity of the principal of, or any
installment of interest on, any Exchange Debenture, (b) reduce the principal
amount of (or the premium), or interest on, any Exchange Debenture; (c) change
the place or currency of payment of principal of (or premium), or interest on
any Exchange Debenture, (d) impair the right to institute suit for the
enforcement of any payment on or with respect to any Exchange Debenture, (e)
reduce the above-stated percentage of Exchange Debentures then outstanding
necessary to modify or amend the Exchange Indenture, (f) reduce the percentage
of aggregate principal amount of Exchange Debentures then outstanding
necessary for waiver of compliance with certain provisions of the Exchange
Indenture or for waiver of certain defaults, (g) modify any provisions of the
Exchange Indenture relating to the modification and amendment of the Exchange
Indenture or the waiver of past defaults or covenants, except as otherwise
specified, (h) modify any of the provisions of the Exchange Indenture relating
to the subordination of the Exchange Debentures in a manner materially adverse
to the Holders, (i) modify any provisions of the Exchange Indenture relating
to the guarantee by the Company of the Indebtedness of any Unrestricted
Subsidiaries or (j) following the mailing of any Offer to Purchase, modify any
Offer to Purchase for the Exchange Debentures required under covenants
described above under "--Certain Covenants--
 
                                      77
<PAGE>
 
Limitation on Certain Asset Sales" and "--Change of Control" in a manner
materially adverse to the Holders thereof. ((S)902)
 
  The Holders of a majority in aggregate principal amount of the Outstanding
Exchange Debentures, on behalf of all Holders of Exchange Debentures, may
waive compliance by the Company with certain restrictive provisions of the
Exchange Indenture. ((S) 1019) Subject to certain rights of the Trustee, as
provided in the Exchange Indenture, the Holders of a majority in aggregate
principal amount of the Exchange Debentures then outstanding, on behalf of all
Holders of Exchange Debentures, may waive any past default arising from
failure to purchase any Exchange Debentures tendered pursuant to an Offer to
Purchase. ((S) 513)
 
CERTAIN DEFINITIONS
 
  Set forth below is a summary of certain of the defined terms used in the
Certificate of Designation and/or the Exchange Indenture. Reference is made to
the Certificate of Designation and/or the Exchange Indenture for the full
definition of all such terms, as well as any other terms used herein for which
no definition is provided.
 
  "Acquired Debt" means, with respect to any specified Person, Indebtedness of
any other Person existing at the time such other Person merges with or into,
or becomes a Subsidiary of, such specified Person, including Indebtedness
incurred in connection with, or in contemplation of, such other Person merging
with or into, or becoming a Subsidiary of, such specified Person.
 
  "Affiliate" means, with respect to any specified Person, any other Person
directly or indirectly controlling or controlled by or under direct or
indirect common control with such specified Person. For purposes of this
definition, "control of" (including, with correlative meanings, the terms
"controlling," "controlled by" and "under common control with") any Person
means the possession, directly or indirectly, of the power to direct or cause
the direction of the management or policies of such Person, whether through
the ownership of voting securities, by agreement or otherwise; provided,
however, that beneficial ownership of 10% or more of the voting securities of
a Person shall be deemed to be control.
 
  "Asset Swap" means the execution of a definitive agreement, subject only to
FCC approval, expiration or earlier termination of the HSR Act waiting period
to the extent applicable and other customary closing conditions, that the
Company in good faith believes will be satisfied, for a substantially
concurrent purchase and sale, or exchange, of Broadcast Assets between the
Company or any of its Restricted Subsidiaries and another Person or group of
Affiliated Persons; provided that any amendment to or waiver of any closing
condition which individually or in the aggregate is material to the Asset Swap
shall be deemed to be a new Asset Swap.
 
  "Broadcast Assets" means assets used or useful in the ownership or operation
of an AM or FM radio station.
 
  "Broadcast License" means an authorization issued by the FCC for the
operation of an AM or FM radio station.
 
  "Capital Lease Obligation" means, at any time any determination thereof is
to be made, the amount of the liability in respect of a capital lease that
would at such time be required to be capitalized on the balance sheet in
accordance with GAAP.
 
  "Capital Stock" means (i) in the case of a corporation, capital stock, (ii)
in the case of any association or business entity, any and all shares,
interests, participations, rights or other equivalents (however designated) or
capital stock and (iii) in the case of a partnership, partnership interests
(whether general or limited) and any other interest or participation that
confers on a Person the right to receive a share of the profits and losses of,
or distributions of assets of, such partnership.
 
  "Cash Equivalents" means (i) United States dollars, (ii) securities issued
or directly and fully guaranteed or insured by the United States government or
any agency or instrumentality thereof having maturities of less
 
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<PAGE>
 
than one year from the date of acquisition, (iii) certificates of deposit and
eurodollar time deposits with maturities of less than one year from the date
of acquisition, bankers' acceptances with maturities of less than one year and
overnight bank deposits, in each case with any lender party to either of the
Credit Agreements or with any domestic commercial bank having capital and
surplus in excess of $500,000,000 and a Keefe Bank Watch Rating of "B" or
better, (iv) repurchase obligations with a term of not more than seven days
for underlying securities of the types described in clauses (ii) and (iii)
entered into with any financial institution meeting the qualifications
specified in clause (iii) above and (v) commercial paper having the highest
rating obtainable from Moody's Investors Service, Inc. or Standard & Poor's
Ratings Services, a division of the McGraw-Hill Companies, Inc., and in each
case maturing within nine months after the date of acquisition.
 
  "Change of Control" means the occurrence of any of the following:
 
    (i) the sale, lease or transfer, in one or a series of related
  transactions, of all or substantially all of the Company's assets to any
  Person or group (as such term is used in Section 13(d)(3) of the Exchange
  Act) (other than the Principal Shareholders or their Related Parties),
 
    (ii) the adoption of a plan relating to the liquidation or dissolution of
  the Company,
 
    (iii) the acquisition, directly or indirectly, by any Person or group (as
  such term is used in Section 13(d)(3) of the Exchange Act) (other than one
  or more of the Principal Shareholders and their Related Parties) of 40% or
  more of the voting power of the voting stock of the Company by way of
  merger or consolidation or otherwise, provided that such acquisition will
  not constitute a "Change of Control" unless or until such Person or group
  owns, directly or indirectly, more of the voting power of the voting stock
  of the Company than the Principal Shareholders and their Related Parties,
  or
 
    (iv) the Continuing Directors cease for any reason to constitute a
  majority of the directors of the Company then in office.
 
  For purposes of this definition, any transfer of an Equity Interest of an
entity that was formed for the purpose of acquiring voting stock of the
Company shall be deemed to be a transfer of such portion of such voting stock
as corresponds to the portion of the equity of such entity that has been so
transferred.
 
  "Consolidated Interest Expense" means, without duplication, with respect to
any period, the sum of (i) the interest expense and all capitalized interest
of the Company and its Restricted Subsidiaries for such period, on a
consolidated basis, including, without limitation, (a) amortization of debt
discount, (b) the net cost under interest rate contracts (including
amortization of debt discount), (c) the interest portion of any deferred
payment obligation and (d) accrued interest, plus (ii) the interest component
of any Capital Lease Obligation paid or accrued or scheduled to be paid or
accrued by the Company during such period, determined on a consolidated basis
in accordance with GAAP.
 
  "Continuing Director" means any member of the Board of Directors of the
Company who (i) is a member of that Board of Directors on the Issue Date or
(ii) was nominated for election by either (a) one or more of the Principal
Shareholders (or a Related Party thereof) or (b) the Board of Directors a
majority of whom were directors at the Issue Date or whose election or
nomination for election was previously approved by one or more of the
Principal Shareholders or such directors.
 
  "Convertible Exchange Debentures" means any debentures issued pursuant to
the Indenture, dated as of June 25, 1996, between the Company and Bank of
Montreal Trust Company, as Trustee.
 
  "Credit Agreements" means both the $550,000,000 Credit Agreement and the
$350,000,000 Credit Agreement, each dated as of January 24, 1997, among the
Company, The Bank of New York, as collateral agent and administrative agent,
the co-syndication agents, the managing agents, the agent and the co-agents
named therein and the lenders parties thereto, including in each case (i) any
related notes, guarantees (including guarantees by the Company's
Subsidiaries), collateral documents, instruments and agreements executed in
connection therewith, and in each case as amended, modified, renewed,
refunded, replaced or refinanced from time to time, and (ii) any notes,
guarantees (including guarantees by the Company's Subsidiaries), collateral
 
                                      79
<PAGE>
 
documents, instruments and agreements executed in connection with any such
amendment, modification, renewal, refunding, replacement or refinancing.
 
  "Debt to EBITDA Ratio" means, with respect to any date, the ratio of (a) the
aggregate principal amount of all outstanding Indebtedness (excluding Hedging
Obligations, including interest rate swap obligations, that are incurred in
the ordinary course of business for the purpose of fixing or hedging interest
rate risk with respect to any floating rate Indebtedness that is permitted by
the terms of the Exchange Indenture or the Certificate of Designation, as the
case may be, to be outstanding) of the Company and its Restricted Subsidiaries
as of such date on a consolidated basis, plus the aggregate liquidation
preference or redemption amount of all outstanding Disqualified Stock of the
Company and its Restricted Subsidiaries as of such date (excluding any such
Disqualified Stock held by the Company or a Wholly Owned Restricted
Subsidiary), to (b) EBITDA of the Company and its Restricted Subsidiaries on a
consolidated basis for the four most recent full fiscal quarters ending
immediately prior to such date, determined on a pro forma basis after giving
effect to each acquisition or disposition of assets made by the Company and
its Restricted Subsidiaries from the beginning of such four-quarter period
through such date as if such acquisition or disposition had occurred at the
beginning of such four-quarter period.
 
  "Default" means any event that is, or after the giving of notice or passage
of time or both would be, an Event of Default.
 
  "Designated Senior Debt" means (i) the Senior Bank Debt, and (ii) any other
Senior Debt of the Company permitted under the Exchange Indenture, the
principal amount of which is $25,000,000 or more at the time of designation by
the Company in a written instrument delivered to the Trustee.
 
  "Disposition" means, with respect to any Person, any merger, consolidation
or other business combination involving such Person (whether or not such
Person is the Surviving Person) or the sale, assignment, transfer, lease
conveyance or other disposition of all or substantially all of such Person's
assets.
 
  "Disqualified Stock" means any Capital Stock that, by its terms (or by the
terms of any security into which it is convertible or for which it is
exchangeable), or upon the happening of any event, matures or is mandatorily
redeemable, pursuant to a sinking fund obligation or otherwise, or is
redeemable at the option of the holder thereof (other than upon a Change of
Control of the Company in circumstances where the holders of the New Preferred
Stock or Exchange Debentures, as the case may be, would have similar rights),
in whole or in part on or prior to one year after (i) January 15, 2009, in the
case of the New Preferred Stock or (ii) the Stated Maturity of the Exchange
Debentures, in the case of the Exchange Debentures. The amount of Disqualified
Stock shall be the greater of the liquidation preference or mandatory or
optional redemption price thereof.
 
  "EBITDA" of a specified person means, for any period, the consolidated net
income of such specified Person and its Restricted Subsidiaries for such
period:
 
    (i) plus (without duplication and to the extent involved in computing
  such consolidated net income) (a) interest expense, (b) provision for
  income taxes, (c) depreciation and amortization and other non-cash charges
  (including amortization of goodwill and other intangibles and barter
  expenses), (d) EBITDA of Sponsored Investees (where such Person is the
  Company), and (e) LMA expenses; and
 
    (ii) minus (without duplication and to the extent involved in computing
  such consolidated net income) (a) any gains (or plus losses), together with
  any related provision for taxes on such gains or losses, realized in
  connection with any sale of assets (including, without limitation,
  dispositions pursuant to sale and leaseback transactions), (b) any non-cash
  or extraordinary gains (or plus losses), together with any related
  provision for taxes on such extraordinary gains or losses, (c) the amount
  of any cash payments related to non-cash charges that were added back in
  determining EBITDA in any prior period, (d) barter revenues, and (e)
  interest attributable to Indebtedness of Sponsored Investees (where such
  Person is the Company) that is owed to the Company or a Restricted
  Subsidiary, together with any taxes attributable thereto;
 
 
                                      80
<PAGE>
 
provided, however, that:
 
    (i) the net income of any other Person (other than a Sponsored Investee)
  that is accounted for by the equity method of accounting shall be included
  only to the extent of the amount of dividends or distributions paid in cash
  to such specified Person whose EBITDA is being determined or a Wholly Owned
  Restricted Subsidiary thereof;
 
    (ii) the net income of any other Person that is a Restricted Subsidiary
  (other than a Wholly Owned Restricted Subsidiary) or is an Unrestricted
  Subsidiary shall be included only to the extent of the amount of dividends
  or distributions paid in cash to such specified Person whose EBITDA is
  being determined or a Wholly Owned Restricted Subsidiary thereof;
 
    (iii) the net income (loss) of any other Person acquired after the Issue
  Date in a pooling of interests transaction for any period prior to the date
  of such acquisition shall be excluded (to the extent otherwise included);
  and
 
    (iv) gains or losses from sales of assets other than sales of assets
  acquired and held for resale in the ordinary course of business shall be
  excluded (to the extent otherwise included).
 
  All of the foregoing will be determined in accordance with GAAP.
 
  "Equity Interests" means Capital Stock and all warrants, options or other
rights to acquire Capital Stock (including any Indebtedness or Disqualified
Stock that is convertible into, or exchangeable for, Capital Stock).
 
  "Exchange Date" means the date of original issuance of the Exchange
Debentures in exchange for New Preferred Stock.
 
  "Exchangeable Preferred Stock" means the Old Preferred Stock or New
Preferred Stock issued in exchange therefor.
 
  "Existing Indebtedness" means any outstanding Indebtedness of the Company
and its Restricted Subsidiaries as of the Issue Date (in the case of the New
Preferred Stock) or the Exchange Date (in the case of the Exchange Debentures)
or which thereafter becomes Indebtedness of the Company or any of its
Restricted Subsidiaries as a result of the EZ Merger and which was outstanding
Indebtedness of EZ or its Subsidiaries as of the Issue Date or the Exchange
Date, as the case may be.
 
  "Existing Investments" means any Investments of the Company and its
Restricted Subsidiaries (other than Investments in Unrestricted Subsidiaries)
as of the Issue Date or which thereafter becomes an Investment of the Company
or any of its Restricted Subsidiaries as a result of the EZ Merger and was an
Investment of EZ or its Subsidiaries on the Issue Date.
 
  "EZ" means EZ Communications, Inc., a Virginia corporation.
 
  "Fair Market Value" means, with respect to any asset or property, the sale
value that would be obtained in an arm's-length transaction between an
informed and willing seller under no compulsion to sell and an informed and
willing buyer under no compulsion to buy. All determinations of Fair Market
Value shall be made by the Board of Directors of the Company and shall be
evidenced by a resolution of such Board set forth in an Officers' Certificate.
In the case of the Exchange Debentures, the Officer's Certificate shall be
delivered to the Trustee, and the Trustee may conclusively rely upon it.
 
  "GAAP" means generally accepted accounting principles set forth in the
opinions and pronouncements of the Accounting Principles Board of the American
Institute of Certified Public Accountants and statements and pronouncements of
the Financial Accounting Standards Board, or in such other statements by such
other entity as have been approved by a significant segment of the accounting
profession, which are in effect on the Issue Date.
 
 
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<PAGE>
 
  "Hedging Obligations" means, with respect to any Person, the Obligations of
such Person under (i) interest rate swap agreements, interest rate cap
agreements and interest rate collar agreements, and (ii) other agreements or
arrangements designed to protect such Person against fluctuations in interest
rates.
 
  "Immediate Family Member" means, with respect to any individual, such
individual's spouse (past or current), descendants (natural or adoptive, of
the whole or half blood) of the parents of such individual, such individual's
grandparents and parents (natural or adoptive), and the grandparents, parents
and descendants of parents (natural or adoptive, of the whole or half blood)
of such individual's spouse (past or current).
 
  "Indebtedness" means, with respect to any Person, whether or not contingent,
(i) all indebtedness of such Person for borrowed money or for the deferred
purchase price of property or services (other than current trade liabilities
incurred in the ordinary course of business and payable in accordance with
customary practices) or which is evidenced by a note, bond, debenture or
similar instrument, (ii) all Capital Lease Obligations of such Person, (iii)
all obligations of such Person in respect of letters of credit or bankers'
acceptances issued or created for the account of such Person, (iv) all Hedging
Obligations of such Person, (v) all liabilities secured by any Lien on any
property owned by such Person even if such Person has not assumed or otherwise
become liable for the payment thereof to the extent of the value of the
property subject to such Lien, and (vi) to the extent not otherwise included,
any guarantee by such person of any other Person's indebtedness or other
obligations described in clauses (i) through (v) above.
 
  "Investments" means, with respect to any Person, all investments by such
Person in other Persons (including Affiliates of such Person) in the form of
loans, guarantees, advances or capital contributions (excluding commission,
travel and similar advances to officers and employees made in the ordinary
course of business), purchases or other acquisitions for consideration of
Indebtedness, Equity Interests or other securities of any other Person and all
other items that are or would be classified as investments on a balance sheet
prepared in accordance with GAAP.
 
  "Issue Date" means the date of original issuance of the Exchangeable
Preferred Stock.
 
  "Lien" means, with respect to any asset, any mortgage, lien, pledge, charge,
security interest or encumbrance of any kind in respect of such asset, whether
or not filed, recorded or otherwise perfected under applicable law (including
any conditional sale or other title retention agreement, any lease in the
nature thereof, any option or other agreement to sell or give a security
interest in any asset and any filing of, or agreement to give, any financing
statement under the "Uniform Commercial Code" (or equivalent statutes) of any
jurisdiction).
 
  "Net Proceeds" means, with respect to any Asset Sale by any Person, the
aggregate cash proceeds received by such Person in respect of such Asset Sale,
which amount is equal to the excess, if any, of:
 
    (i) the cash received by such Person (including any cash payments
  received by way of deferred payment pursuant to, or monetization of, a note
  or installment receivable or otherwise, but only as and when received) in
  connection with such Asset Sale, over
 
    (ii) the sum of
 
      (a) the amount of any Indebtedness including any premium thereon and
    fees and expenses associated therewith which is required to be repaid
    by such Person in connection with such Asset Sale, plus
 
      (b) the out-of-pocket expenses (1) incurred by such Person in
    connection with such Asset Sale, and (2) if such Person is a Restricted
    Subsidiary, incurred in connection with the transfer of such amount to
    the parent company or entity of such Person, plus
 
      (c) provision for taxes, including income taxes, attributable to the
    Asset Sale or attributable to required prepayments or repayments of
    Indebtedness with the proceeds of such Asset Sale, plus
 
 
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<PAGE>
 
      (d) a reasonable reserve for the after-tax cost of any
    indemnification payments (fixed or contingent) attributable to the
    seller's indemnities to the purchaser in respect of such Asset Sale
    undertaken by the Company or any of its Restricted Subsidiaries in
    connection with such Asset Sale.
 
  "Obligations" means any principal, interest, penalties, fees,
indemnifications, reimbursements, damages and other liabilities payable under
the documentation governing any Indebtedness.
 
  "Offer to Purchase", with respect to the Exchange Debentures, means a
written offer ("Offer") to each Holder at such Holder's address appearing in
the Security Register on the date of the Offer, offering to purchase in cash
up to the principal amount of Exchange Debentures specified in such Offer at a
purchase price equal to 101% of the principal amount of the Exchange
Debentures plus accrued and unpaid interest, if any. Unless otherwise required
by applicable law, the Offer shall specify an expiration date ("Expiration
Date") of the Offer to Purchase which shall be, subject to any contrary
requirements of applicable law, not less than 30 days or more than 60 days
after the date of such Offer and a settlement date ("Purchase Date") for
purchase of Exchange Debentures within five Business Days after the Expiration
Date. The Company shall notify the Trustee at least 15 Business Days (or such
shorter period as is acceptable to the Trustee) prior to the mailing of the
Offer of the Company's obligation to make an Offer to Purchase, and the Offer
shall be sent by first class mail by the Company or, at the Company's request
and expense, by the Trustee in the name and at the expense of the Company. The
Offer shall contain information concerning the business of the Company and its
Subsidiaries which the Company in good faith believes will enable such Holders
to make an informed decision with respect to the Offer to Purchase (which at a
minimum will include (i) the most recent annual and quarterly financial
statements and "Management's Discussion and Analysis of Financial Condition
and Results of Operations" contained in the documents required to be filed
with the Trustee pursuant to the Exchange Debenture (which requirements may be
satisfied by delivery of such documents together with the Offer), (ii) a
description of material developments in the Company's business subsequent to
the date of the latest of such financial statements referred to in Clause (i)
(including a description of the events requiring the Company to make the Offer
to Purchase), (iii) if applicable, appropriate pro forma financial information
concerning the Offer to Purchase and the events requiring the Company to make
the Offer to Purchase and (iv) any other information required by applicable
law to be included therein. The Offer shall contain all instructions and
materials necessary to enable such Holders to tender Exchange Debentures
pursuant to the Offer to Purchase. The Offer shall also state:
 
    (1) the Section of the Exchange Indenture pursuant to which the Offer to
  Purchase is being made;
 
    (2) the Expiration Date and the Purchase Date;
 
    (3) the aggregate principal amount of the Outstanding Exchange Debentures
  offered to be purchased by the Company (the "Purchase Amount") pursuant to
  the Offer to Purchase (including, if less than 100%, the manner by which
  such has been determined pursuant to the Section of the Exchange Debenture
  requiring the Offer to Purchase);
 
    (4) the purchase price to be paid by the Company (the "Purchase Price")
  for each $1,000 aggregate principal amount of Exchange Debentures accepted
  for payment (as specified pursuant to the Exchange Indenture);
 
    (5) that the Holder may tender all or any portion of the Exchange
  Debentures registered in the name of such Holder and that any portion of
  Securities tendered must be tendered in an integral multiple of $1,000
  principal amount;
 
    (6) the place or places where Exchange Debentures are to be surrendered
  for tender pursuant to the Offer to Purchase;
 
    (7) that interest on any Exchange Debenture not tendered or tendered but
  not purchased by the Company pursuant to the Offer to Purchase will
  continue to accrue;
 
    (8) that on the Purchase Date the Purchase Price will become due and
  payable upon each Exchange Debenture being accepted for payment pursuant to
  the Offer to Purchase and that interest thereon shall cease to accrue on
  and after the Purchase Date;
 
 
                                      83
<PAGE>
 
    (9) that each Holder electing to tender an Exchange Debenture pursuant to
  the Offer to Purchase will be required to surrender such Exchange Debenture
  at the place or places specified in the Offer prior to the close of
  business on the Expiration Date (such Exchange Debenture being, if the
  Company or the Trustee so requires, duly endorsed by, or accompanied by a
  written instrument of transfer in form satisfactory to the Company and the
  Trustee duly executed by, the Holder thereof or his attorney duly
  authorized in writing);
 
    (10) that Holders will be entitled to withdraw all or any portion of
  Exchange Debentures tendered if the Company (or the Paying Agent) receives,
  not later than the close of business on the Expiration Date, a telegram,
  telex, facsimile transmission or letter setting forth the name of the
  Holder, the principal amount of the Exchange Debenture that the Holder
  tendered, the certificate number of the Exchange Debenture that the Holder
  tendered and a statement that such Holder is withdrawing all or a portion
  of his tender;
 
    (11) that (a) if Exchange Debentures in an aggregate principal amount
  less than or equal to the Purchase Amount are duly tendered and not
  withdrawn pursuant to the Offer to Purchase, the Company shall purchase all
  such Exchange Debentures and (b) if Exchange Debentures in an aggregate
  principal amount in excess of the Purchase Amount are tendered and not
  withdrawn pursuant to the Offer to Purchase, the Company shall purchase
  Exchange Debentures having an aggregate principal amount equal to the
  Purchase Amount on a pro rata basis (with such adjustments as may be deemed
  appropriate so that only Exchange Debentures in denominations of $1,000 or
  integral multiples thereof shall be purchased); and
 
    (12) that in the case of any Holder whose Exchange Debenture is purchased
  only in part, the Company shall execute, and the Trustee shall authenticate
  and deliver to the Holder of such Exchange Debenture without service
  charge, a new Exchange Debenture or Exchange Debentures, of any authorized
  denomination as requested by such Holder, in an aggregate principal amount
  equal to and in exchange for the unpurchased portion of the Exchange
  Debenture so tendered.
 
  Any Offer to Purchase shall be governed by and effected in accordance with
the Offer for such Offer to Purchase.
 
  "Offer to Purchase," with respect to the New Preferred Stock, has the same
meaning as Offer to Purchase with respect to the Exchange Debentures, except
that references to (i) Exchange Debentures shall be to New Preferred Stock,
(ii) principal amount and interest shall be to the liquidation preference and
dividends, respectively, (iii) the Trustee and the Exchange Indenture shall be
deleted, (iv) documents filed with the Trustee shall be to documents
contemplated in the covenant described above under "Description of the New
Preferred Stock--Provision of Financial Information," and (v) minimum
denominations or multiples of $1,000 shall be to whole shares.
 
  "Permitted Investment" means:
 
    (i) any Investment in the Company or any Wholly Owned Restricted
  Subsidiary;
 
    (ii) any Investment in Cash Equivalents;
 
    (iii) any Investment in a Person if, as a result of such Investment, (a)
  such Person becomes a Wholly Owned Restricted Subsidiary of the Company, or
  (b) such Person either (1) is merged, consolidated or amalgamated with or
  into the Company or one of its Wholly Owned Restricted Subsidiaries and the
  Company or such Wholly Owned Restricted Subsidiary is the Surviving Person
  or the Surviving Person becomes a Wholly Owned Restricted Subsidiary, or
  (2) transfers or conveys all or substantially all of its assets to, or is
  liquidated into, the Company or one of its Wholly Owned Restricted
  Subsidiaries;
 
    (iv) any Investment in a Sponsored Investee as contemplated by clause
  (ii) of the definition of "Sponsored Investee";
 
    (v) any Investment in accounts and notes receivable acquired in the
  ordinary course of business;
 
    (vi) notes from employees issued to the Company representing payment of
  the exercise price of options to purchase capital stock of the Company;
 
 
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<PAGE>
 
    (vii) investments in Tower Parent and Tower (excluding Existing
  Investments) aggregating up to $25,000,000 in cash and/or property made
  within two years from the Issue Date, provided that at the time of and
  immediately after giving effect to each proposed Investment, (a) each of
  Tower Parent and Tower is an Unrestricted Subsidiary, (b) no Default or
  Event of Default shall have occurred and be continuing or would occur as a
  consequence thereof and (c) the Debt to EBITDA Ratio of the Company and its
  Restricted Subsidiaries is 7.0:1 or less;
 
    (viii) Investments in Unrestricted Subsidiaries represented by shares of
  Capital Stock (other than Disqualified Stock) of the Company or assets and
  property acquired in exchange for Capital Stock (other than Disqualified
  Stock) of the Company; and
 
    (ix) any Existing Investment.
 
  Any Investment in an Unrestricted Subsidiary shall not be a Permitted
Investment unless included in clauses (i) through (ix) above.
 
  "Permitted Liens" means (i) Liens securing Senior Debt; (ii) Liens in favor
of the Company or any Restricted Subsidiary; (iii) Liens on property of a
Person existing at the time such Person is merged with or into or consolidated
with the Company or any Restricted Subsidiary, provided, however, that such
Liens were in existence prior to the contemplation of such merger or
consolidation and do not extend to any assets other than those of the Person
merged with or into or consolidated with the Company or any Restricted
Subsidiary; (iv) Liens on property existing at the time of acquisition thereof
by the Company or any Restricted Subsidiary, provided, however, that such
Liens were in existence prior to the contemplation of such acquisition; (v)
Liens to secure the performance of statutory obligations, surety or appeal
bonds, performance bonds, bids, tenders, contracts (other than contracts for
the payment of money) escrow deposits in connection with permitted
acquisitions, leases or other obligations of a like nature incurred in the
ordinary course of business; (vi) Liens existing on the Issue Date (in the
case of the New Preferred Stock) or the Exchange Date (in the case of the
Exchange Debentures); (vii) Liens for taxes, workers compensation,
unemployment insurance, social security obligations, assessments or
governmental charges or claims that are not yet delinquent or that are being
contested in good faith by appropriate proceedings promptly instituted and
diligently concluded, provided, however, that any reserve or other appropriate
provision as shall be required in conformity with GAAP shall have been made
therefor; (viii) Liens imposed by law, such as mechanics', carriers',
warehousemen's, materialmen's, and vendors' Liens, incurred in good faith in
the ordinary course of business with respect to amounts not yet delinquent or
being contested in good faith by appropriate proceedings if a reserve or other
appropriate provisions, if any, as shall be required by GAAP shall have been
made therefor; (ix) zoning restrictions, easements, licenses, covenants,
reservations, restrictions on the use of real property or minor irregularities
of title incident thereto that do not, in the aggregate, materially detract
from the value of the property or the assets of the Company or materially
impair the use of such property in the operation of the Company's business;
(x) judgment Liens to the extent that such judgments do not cause or
constitute a Default or an Event of Default; (xi) Liens to secure the payment
of all or a part of the purchase price of property or assets acquired or the
construction costs of property or assets constructed in the ordinary course of
business on or after the Exchange Date, provided, however, that (a) such
property or assets are used in the same or similar line of business as the
Company was engaged in on the Exchange Date, (b) at the time of incurrence of
any such Lien, the aggregate principal amount of the obligations secured by
such Lien does not exceed the lesser of the cost or Fair Market Value of the
assets or property (or portions thereof) so acquired or constructed, (c) each
such Lien encumbers only the assets or property (or portions thereof) so
acquired or constructed and attaches to such assets or property within 120
days of the purchase or construction thereof and (d) any Indebtedness secured
by such Lien is permitted to be incurred under "--Certain Covenants--
Limitation on Incurrence of Indebtedness and Issuance of Preferred Stock";
(xii) to the extent deemed to create a Lien, any negative pledge covenants
contained in any Senior Debt; (xiii) Liens arising in connection with any
agreement or option to sell or otherwise dispose of any assets of the Company
or any Restricted Subsidiary not prohibited by the provisions of the Exchange
Indenture; and (xiv) Liens incurred in the ordinary course of business of the
Company or any Restricted Subsidiary with respect to obligations that do not
exceed $500,000 at any one time outstanding and that (a) are not incurred in
 
                                      85
<PAGE>
 
connection with the borrowing of money or the obtaining of advances or credit
(other than trade credit in the ordinary course of business) and (b) do not in
the aggregate materially detract from the value of the property or materially
impair the use thereof in the operation of business by the Company or such
Restricted Subsidiary.
 
  "Permitted Sponsored Investee Indebtedness" means Indebtedness of a
Sponsored Investee to a Person other than the Company or a Wholly Owned
Restricted Subsidiary, provided that:
 
    (a) such Indebtedness ranks junior in right of payment to the Investments
  of the Company and any Wholly Owned Restricted Subsidiary in the Sponsored
  Investee;
 
    (b) the net proceeds of such Indebtedness are utilized to reduce the
  amount outstanding on the Company's or a Wholly Owned Restricted
  Subsidiary's Investments in the Sponsored Investee;
 
    (c) the terms of such Indebtedness do not restrict the ability of the
  Sponsored Investee to make any payments to the Company or a Wholly Owned
  Restricted Subsidiary; and
 
    (d) if such Sponsored Investee becomes a Restricted Subsidiary, such
  Indebtedness is refinanced by the Company (and no longer outstanding to
  such other Person) prior to or simultaneously with the Sponsored Investee
  becoming a Restricted Subsidiary.
 
  "Person" means any individual, corporation, partnership, limited liability
company, joint venture, association, joint-stock company, trust,
unincorporated organization or government or any agency or political
subdivision thereof.
 
  "Preferred Stock Source Date" means the date of original issue of the
Exchangeable Preferred Stock.
 
  "Principal Shareholders" means Steven B. Dodge and Thomas H. Stoner.
 
  "Public or Rule 144A Equity Offering" means an underwritten public offering,
or an exempt offering made on a firm commitment basis by initial purchasers
the substantial majority of which is contemplated to be resold by the initial
purchasers pursuant to Rule 144A under the Securities Act, of Equity Interests
(other than Indebtedness or Disqualified Stock) of a Person, the net proceeds
from which (after deducting any underwriting discounts and commissions)
exceeds $10,000,000.
 
  "Purchase Money Indebtedness" means Indebtedness of the Company and its
Restricted Subsidiaries incurred in connection with the purchase of property
or assets for the business of the Company and its Restricted Subsidiaries.
 
  "Radio Data" means Radio Data Group, Inc., a Virginia corporation.
 
  "Refinancing Indebtedness" means (i) Indebtedness of the Company or any
Restricted Subsidiary incurred or given in exchange for, or the proceeds of
which are used to, extend, refinance, renew, replace, substitute, defease or
refund any other Indebtedness or Disqualified Stock incurred by the Company in
accordance with the terms of this Indenture, and (ii) Indebtedness of any
Restricted Subsidiary incurred or given in exchange for, or the proceeds of
which are used to, extend, refinance, renew, replace, substitute, defease or
refund any other Indebtedness or Disqualified Stock of the Company or any
Restricted Subsidiary in accordance with the terms of the Exchange Indenture.
 
  "Related Party" with respect to any Principal Shareholder means (i) any 80%
(or more) owned Subsidiary or Immediate Family Member (in the case of an
individual) of such Principal Shareholder or (ii) any Person, the
beneficiaries, stockholders, partners, owners or Persons beneficially holding
an 80% or more controlling interest of which consist of such Principal
Shareholder or an Immediate Family Member, or (iii) any Person employed by the
Company in a management capacity as of the Issue Date.
 
  "Restricted Subsidiary" means a Subsidiary of the Company other than an
Unrestricted Subsidiary.
 
 
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<PAGE>
 
  "Senior Bank Debt" means (i) the Indebtedness outstanding under either of
the Credit Agreements, provided that Senior Bank Debt under this clause (i)
shall not exceed the difference between (a) the sum of $750,000,000 plus the
aggregate principal amount (up to $150,000,000) of borrowings incurred under
the applicable Credit Agreement to finance the repurchase by the Company of EZ
Notes (the "EZ Note Amount") plus any borrowings and letters of credit under
either of the Credit Agreements after the Issue Date to the extent that such
borrowings or letters of credit at the time of incurrence or issuance, as the
case may be, resulted in combined Indebtedness under the Credit Agreements
exceeding $750,000,000 plus the EZ Note Amount and to the extent that such
borrowings or letters of credit at the time of incurrence or issuance, as the
case may be, were permitted under the covenant described above under "--
Certain Covenants--Limitation on Incurrence of Indebtedness and Issuance of
Preferred Stock" with respect to the New Preferred Stock or the Exchange
Debentures, as the case may be, and (b), in the case of the New Preferred
Stock, the aggregate amount of net proceeds from asset sales applied to
permanently reduce the level of permitted borrowings under the Credit
Agreements pursuant to the terms of any of the Company's outstanding
Indebtedness or, in the case of the Exchange Debentures, the aggregate amount
of Net Proceeds from Asset Sales applied to reduce permanently borrowings
under the Credit Agreements pursuant to the covenant described above under "--
Certain Covenants--Limitation on Certain Asset Sales", and (ii) all
Obligations incurred by or owing to the holders or their agent or
representatives of such Indebtedness outstanding under either of the Credit
Agreements (including, but not limited to, all fees and expenses of counsel
and all other interest, charges, fees and expenses).
 
  "Senior Debt" means the principal of and interest (including post-petition
interest whether or not allowed as a claim) on, and all other amounts owing in
respect of, (a) Senior Bank Debt, (b) the American Notes, (c) the EZ Notes (as
defined in the Exchange Indenture) upon consummation of the EZ Merger, (d) the
Convertible Exchange Debentures, unless otherwise designated by the Company
pursuant to the indenture under which they are issued, and (e) any other
Indebtedness permitted to be incurred by the Company under the terms of the
Exchange Indenture (including, but not limited to, reasonable fees and
expenses of counsel and all other charges, fees and expenses incurred in
connection with such Indebtedness), unless (i) the instrument creating or
evidencing such Indebtedness or pursuant to which such Indebtedness is
outstanding expressly provides that such Indebtedness is pari passu with or
subordinated in right of payment to the Exchange Debentures or (ii) such
Indebtedness is Acquired Debt that, after taking into account the provisions
of the Exchange Indenture described in the next sentence, is pari passu with
the Exchange Debentures. The Exchange Debentures shall be pari passu with
junior subordinated Acquired Debt unless such treatment would result in a
breach or a default under the terms of such Acquired Debt.
 
  Notwithstanding the foregoing, Senior Debt shall not include (v) any
Indebtedness that is represented by Disqualified Stock, (w) any liability for
federal, state, local, or other taxes, (x) any Indebtedness among or between
the Company, any Restricted Subsidiary or any of their Affiliates, (y) any
trade payables and any Indebtedness to trade creditors (other than amounts
accrued thereon) incurred for the purchase of goods or materials, or for
services obtained, in the ordinary course of business or any Obligations to
trade creditors in respect of any such Indebtedness, or (z) any Indebtedness
(other than Senior Bank Debt) that is incurred in violation of the Exchange
Indenture.
 
  "Significant Subsidiary" means any Subsidiary that would be a "significant
subsidiary" as defined in Article 1, Rule 1-02 of Regulation S-X, promulgated
pursuant to the Securities Act, as such Regulation is in effect on the Issue
Date.
 
  "Sponsored Investee" means a Person:
 
    (i) which owns or acquires Broadcast Assets (including a Broadcast
  License);
 
    (ii) which either (A) obtains substantially all of the funds required for
  such acquisition (other than capital contributions from the stockholders of
  such Person) and for the physical improvement of such Broadcast Assets
  approved by the Company at the time of such acquisition, from the proceeds
  of Investments by the Company in such Person or (B) receives all or a
  portion of the purchase price for such
 
                                      87
<PAGE>
 
  assets, in either case, in the form of Indebtedness bearing interest at a
  rate of not less than the lesser of 10% per annum or the prime rate plus 1%
  per annum;
 
    (iii) in respect of which the Company has a right to acquire either (A)
  all of such Person's Equity Interests outstanding on the acquisition date
  or (B) such Broadcast Assets (including such Broadcast License), subject,
  in either case to no conditions other than customary closing conditions,
  including without limitation compliance with the rules and regulations of
  the FCC relating to acquisitions of Broadcast Licenses and any Federal laws
  restricting the number of Broadcast Licenses or share of a market which any
  Person may own or control;
 
    (iv) in which the Company has the right to share in not less than 75% of
  the appreciation in value of the Broadcast Assets, subject to the right of
  the stockholders of the Sponsored Investee to receive a return on their
  capital contribution which is not greater than the annual interest rate on
  the Indebtedness owed to the Company;
 
    (v) which has agreed that it will not--
 
      (a) incur or be liable for any Indebtedness, except for Investments
    owned by the Company and Permitted Sponsored Investee Indebtedness,
 
      (b) make any Investments, except Investments of the type mentioned in
    clauses (ii), (iv) and (v) of the definition of Permitted Investments,
 
      (c) declare or pay any dividend or other distribution on any of its
    Equity Interests or purchase, redeem or otherwise acquire or retire for
    value any of its Equity Interests, other than Equity Interests owned by
    the Company or any Restricted Subsidiary,
 
      (d) sell, lease, convey or otherwise dispose of any assets (including
    by way of a sale-and-leaseback) other than in the ordinary course of
    business or to the Company or any Restricted Subsidiary, or
 
      (e) permit to exist any Liens, except Permitted Liens or Liens in
    favor of the Company or any Restricted Subsidiary;
 
    (vi) which has employed a general manager of each radio station owned by
  such Person who has, in the reasonable opinion of the Company's Board of
  Directors, experience commensurate with that which the Company would expect
  of its radio station general managers; and
 
    (vii) which has agreed that not less than 90% of the excess of its
  cumulative cash flow from operations that exceeds $500,000 will be used to
  meet its obligations on the Investments in it held by the Company or to
  prepay such Investments, except such portion of its cash flow which is used
  to purchase property, plant and equipment (a) in the ordinary course of
  business and approved by the Company (to the extent permitted by FCC
  regulations) or (b) pursuant to plans approved in writing by the Company at
  the time the Person became a Sponsored Investee.
 
  "Subsidiary" means, with respect to any Person, any corporation, or other
business entity of which more than 50% of the total voting power of shares of
Equity Interests entitled (without regard to the occurrence of any
contingency) to vote in the election of directors, managers or trustees or
other governing body thereof is at the time owned or controlled by such Person
(regardless of whether such Equity Interests are owned directly or through one
or more other Subsidiaries of such Person or a combination thereof).
 
  "Surviving Person" means, with respect to any Person involved in or that
makes any Disposition, the Person formed by or surviving such Disposition or
the Person to which such Disposition is made.
 
  "Tower" means American Tower Systems Inc., a Delaware corporation.
 
  "Tower Parent" means American Tower Systems Holding Corporation, a Delaware
corporation.
 
  "Unrestricted Subsidiary" means (i) Tower, (ii) Tower Parent, (iii) Radio
Data, (iv) American Merger Corporation, (v) any Subsidiary of the Company that
at the time of determination shall be an Unrestricted
 
                                      88
<PAGE>
 
Subsidiary (as designated by the Board of Directors of the Company, as
provided below) and (vi) any Subsidiary of an Unrestricted Subsidiary. The
Board of Directors of the Company may designate any Subsidiary of the Company
(including any newly acquired or newly formed Subsidiary) to be an
Unrestricted Subsidiary if all of the following conditions apply: (a) neither
the Company nor any of its Restricted Subsidiaries provides credit support for
any Indebtedness of such Subsidiary (including any undertaking, agreement or
instrument evidencing such Indebtedness), (b) such Subsidiary is not liable,
directly or indirectly, with respect to any Indebtedness other than
Unrestricted Subsidiary Indebtedness, (c) such Unrestricted Subsidiary is not
a party to any agreement, contract, arrangement or understanding at such time
with the Company or any Restricted Subsidiary of the Company unless the terms
of any such agreement, contract, arrangement or understanding are no less
favorable to the Company or such Restricted Subsidiary than those that might
be obtained at the time from Persons who are not Affiliates of the Company
(the "Third Party Value") or, in the event such condition is not satisfied, an
amount equal to the value of the portion of such agreement, contract,
arrangement or understanding to such Subsidiary in excess of the Third Party
Value shall be deemed a Restricted Payment, and (d) such Unrestricted
Subsidiary does not own any Capital Stock of any Subsidiary of the Company
that has not theretofore been or is not simultaneously being designated an
Unrestricted Subsidiary. Any such designation by the Board of Directors of the
Company shall be evidenced to the Trustee by filing with the Trustee a board
resolution giving effect to such designation and an Officers' Certificate
certifying that such designation complies with the foregoing conditions. The
Board of Directors of the Company may designate any Unrestricted Subsidiary as
a Restricted Subsidiary; provided, however, that (i) immediately after giving
effect to such designation, the Company could incur $1.00 of additional
Indebtedness pursuant to the restrictions above under "--Certain Covenants--
Limitation on Incurrence of Indebtedness and Issuance of Preferred Stock", and
(ii) all Indebtedness of such Unrestricted Subsidiary shall be deemed to be
incurred on the date such Subsidiary is designated a Restricted Subsidiary.
 
  "Unrestricted Subsidiary Indebtedness" of any Unrestricted Subsidiary means
Indebtedness of such Unrestricted Subsidiary (i) as to which neither the
Company nor any Restricted Subsidiary is directly or indirectly liable (by
virtue of the Company or any such Restricted Subsidiary being the primary
obligor on, guarantor of, or otherwise liable in any respect to, such
Indebtedness) and (ii) which, upon the occurrence of a default with respect
thereto, does not result in, or permit any holder of any Indebtedness of the
Company or any Restricted Subsidiary to declare, a default on such
Indebtedness of the Company or any Restricted Subsidiary or cause the payment
thereof to be accelerated or payable prior to its Stated Maturity.
 
  "U.S. Government Obligations" means direct obligations (or certificates
representing an ownership interest in such obligations) of the United States
of America (including any agency or instrumentality thereof) for the payment
of which the full faith and credit of the United States of America is pledged
and which are not callable or redeemable at the issuer's option.
 
  "Weighted Average Life to Maturity" means, when applied to any Indebtedness
at any date, the number of years obtained by dividing (i) the sum of the
products obtained by multiplying (a) the amount of each then remaining
installment, sinking fund, serial maturity or other required scheduled payment
of principal, including payment at final maturity, in respect thereof, with
(b) the number of years (calculated to the nearest one-twelfth) that will
elapse between such date and the making of such payment, by (ii) the then
outstanding aggregate principal amount of such Indebtedness.
 
  "Wholly Owned Restricted Subsidiary" means any Restricted Subsidiary all of
the outstanding Equity Interests (other than directors' qualifying shares) of
which are owned, directly or indirectly, by the Company or a Surviving Person
of any Disposition involving the Company, as the case may be.
 
THE TRUSTEE
 
  The Exchange Indenture provides that, except during the continuance of an
Event of Default, the Trustee will perform only such duties as are
specifically set forth in the Exchange Indenture. During the existence of an
Event of Default, the Trustee will exercise such rights and powers vested in
it under the Exchange Indenture and
 
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use the same degree of care and skill in its exercise as a prudent person
would exercise under the circumstances in the conduct of such person's own
affairs. ((S) 601, 603)
 
  The Exchange Indenture and provisions of the Trust Indenture Act
incorporated by reference therein contain limitations on the rights of the
Trustee, should it become a creditor of the Company, to obtain payment of
claims in certain cases or to realize on certain property received by it in
respect of any such claim as security or otherwise. The Trustee is permitted
to engage in other transactions with the Company or any Affiliate; provided,
however, that if it acquires any conflicting interest (as defined in the
Exchange Indenture or in the Trust Indenture Act), it must eliminate such
conflict or resign. ((S) 608)
 
  The Trustee is also the trustee under the American Note Indenture, is a
lender and one of the Managing Agents under each of the Credit Agreements, and
may provide other commercial banking services to the Company. In the event of
a default under any or all of the Credit Agreements, or either of the Note
Indentures, the Trustee could be required to resign due to a conflict of
interest.
 
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                           INDEBTEDNESS OF AMERICAN
 
  The summaries contained herein of the material provisions of certain
indebtedness of American do not purport to be complete and are qualified in
their entirety by reference to the provisions of the Credit Agreements, the
American Note Indenture, the American-EZ Note Indenture and the Tower Credit
Agreement, copies of each of which have been filed with the Commission and are
part of the Registration Statement of which this Prospectus is a part and the
summary herein of certain provisions thereof does not purport to be complete
and is subject to, and is qualified in its entirety by, reference thereto.
Capitalized terms used in this Section which are not otherwise defined in this
Prospectus have the respective meanings assigned thereto in the Credit
Agreements, the American Note Indenture, the American-EZ Note Indenture or the
Tower Credit Agreement, as the case may be.
 
CREDIT AGREEMENTS
 
  In order to finance acquisitions of radio stations and for general corporate
purposes, American has borrowed and expects to continue to borrow under the
Credit Agreements. The Credit Agreements (which consists of two separate
agreements) provide for facilities consisting of (i) a $550.0 million reducing
revolving credit facility which may be borrowed, repaid and reborrowed until
December 31, 2004 (the "Reducing R/C"), (ii) a $200.0 million revolving credit
converting to a term loan facility maturing December 31, 2004 (the "RC/TL"),
and (iii) a $150.0 million single draw converting to a term loan facility
maturing December 31, 2004 which can be used only to repurchase the EZ Notes
(the "SD/TL"). Until interest rates are fixed or capped at American's request,
all outstanding amounts under the Credit Agreements bear interest at a
variable base rate plus a variable margin based on certain of American's
financial ratios. Interest rates under the Credit Agreements are determined,
at the option of American, at either the Eurodollar Rate plus 0.50% to 2.00%
or the Alternate Base Rate plus 0.00% to 0.75%. The spread over the Eurodollar
Rate and the Alternate Base Rate varies from time to time, depending upon
American's financial leverage. American pays quarterly commitment fees equal
to 0.375% or 0.250% per annum (in the case of the Reducing R/C) or equal to
0.1250% or 0.1875% (in the case of the RC/TL and SD/TL), in each case
depending on American's financial leverage, on the aggregate unused portion of
the aggregate commitment. American may make borrowings under the Credit
Agreements only so long as it remains in compliance with certain financial
covenants and meets certain other conditions.
 
  American may incur Indebtedness under the Credit Agreements for
acquisitions, capital expenditures, investments in the Tower Subsidiary,
working capital and general corporate purposes. All such Indebtedness will be
subject to satisfaction of certain conditions with respect to the maintenance
of debt levels, including the maintenance of the following ratios: (i) maximum
Total Debt to Consolidated Annual Operating Cash Flow ratio of 7.00:1
declining in stages to 4.00:1 by December 31, 2000 and thereafter, (ii)
maximum Senior Debt to Consolidated Annual Operating Cash Flow ratio of 5.75:1
declining in stages to 3.25:1 by December 31, 2000 and thereafter, (iii)
minimum Consolidated Annual Operating Cash Flow to Interest Expense ratio of
2.00:1 increasing to 2.25:1 at December 31, 1999 and thereafter, (iv) minimum
Consolidated Annual Operating Cash Flow to Fixed Charges ratio of 1.05:1 at
all times, and (v) minimum Consolidated Annual Operating Cash Flow to Pro
Forma Debt Service ratio of 1.10:1 at all times.
 
  The Credit Agreements restrict the ability of American to redeem, purchase
or otherwise acquire shares of New Preferred Stock and the Exchange Debentures
and prohibit any such redemption, purchase or other acquisition during the
existence of a default or event of default thereunder. See "Description of
Capital Stock--Dividend Restrictions".
 
  The obligations of American under the Credit Agreements are secured by a
first priority security interest in all of the capital stock of each of
American's Restricted Subsidiaries (including its FCC broadcast license
holding subsidiary) and all instruments and material agreements. The
Restricted Subsidiaries have also guaranteed the obligations of American under
the Credit Agreements. If American becomes insolvent or is liquidated or if
the indebtedness under the Credit Agreements is accelerated, the lenders under
the Credit Agreements would be entitled to exercise the remedies available to
a secured lender. Accordingly, such lenders will have a prior claim on such
assets of American and its Restricted Subsidiaries.
 
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<PAGE>
 
  The Tower Subsidiary is a party to the Tower Credit Agreement relating to
aggregate borrowings of up to $90.0 million. The Tower Subsidiary is an
Unrestricted Subsidiary under the Credit Agreement and the Note Indentures.
The Tower Credit Agreement restricts the ability of the Tower Subsidiary to
pay dividends to, make loans to, or to engage in other transactions with,
American and its Restricted Subsidiaries. Indebtedness under the Tower Credit
Agreement is secured by a lien on substantially all of the property and assets
of the Tower Subsidiary (other than its leasehold mortgages). Neither American
nor any of the Restricted Subsidiaries has any obligations with respect to
indebtedness under the Tower Credit Agreement.
 
AMERICAN NOTES
 
  The American Note Indenture provides for the issuance of $175.0 million
aggregate principal amount of the American Notes, all of which are
outstanding, are unsecured obligations of American and mature in 2006. The
American Notes are, in the case of each existing Restricted Subsidiary, and
will be, in the case of each future direct or indirect Restricted Subsidiary,
unconditionally guaranteed, jointly and severally. The Tower Subsidiary is an
Unrestricted Subsidiary and, accordingly, has not guaranteed the American
Notes. The American Notes are subordinated to all Senior Debt (which includes
indebtedness under the Credit Agreements and the American-EZ Note Indenture)
of American, and the Subsidiary Guarantees are subordinated to all Senior Debt
of the respective Subsidiary Guarantors.
 
  The American Notes are redeemable at the option of American, in whole or in
part, at any time on or after February 1, 2001 at the redemption prices set
forth in the American Note Indenture (beginning at 104.5% of the principal
amount and decreasing annually to 100.0% in 2004 and thereafter) plus accrued
and unpaid interest, if any, to but excluding the date of redemption. Also, on
or prior to February 1, 1999, American may redeem up to $58.3 million
principal amount of the American Notes, in cash, at 109% of the principal
amount thereof, together with accrued and unpaid interest, if any, to the date
of redemption, as long as American Notes having an aggregate principal amount
of at least $116.7 million remain outstanding immediately after any such
redemption. Within 15 days after the occurrence of a Change of Control,
American will be required to make an offer to purchase all American Notes then
outstanding at a purchase price, in cash, equal to 101% of the principal
amount thereof, together with accrued and unpaid interest, if any, to the date
of purchase.
 
  The American Note Indenture contains certain restrictive covenants,
including limitations on (i) the incurrence of indebtedness and the issuance
of Preferred Stock by American and the Restricted Subsidiaries; (ii) the
payment of dividends and the making of restricted payments which include
payment of dividends on the New Preferred Stock and the purchase, redemption
or other acquisition of the New Preferred Stock or the Exchange Debentures;
(iii) transactions with affiliates; (iv) the existence of liens; (v) the
disposition of proceeds of asset sales; (vi) Asset Swaps; (vii) the making of
guarantees by American and the Restricted Subsidiaries; (viii) transfers and
issuances of stock of the Restricted Subsidiaries; (ix) the imposition of
restrictions on certain payments by the Restricted Subsidiaries; (x)
investment in Unrestricted Subsidiaries; and (xi) certain mergers and sales of
assets.
 
AMERICAN-EZ NOTES
 
  The American-EZ Notes bear interest at a rate of 9.75% per annum, payable
semi-annually on June 1 and December 1 of each year, commencing June 1, 1996.
The American-EZ Notes are redeemable, in whole or in part, at the option of
American at any time on or after December 1, 2000, at a redemption price of
104.875% of the principal amount, plus accrued and unpaid interest to the date
of the redemption. The redemption price reduces over three years to a
redemption price of 100% of the principal amount in 2003 and thereafter. At
any time prior to December 1, 1998, American may redeem up to $50.0 million of
the original aggregate principal amount of the American-EZ Notes with the net
proceeds of one public offering of common stock at 109.75% of the principal
amount thereof, together with accrued and unpaid interest, if any, to the date
of redemption, as long as at least $100.0 million of the original aggregate
amount of the American-EZ Notes remain outstanding. Upon a Change of Control,
holders of the American-EZ Notes will have the right to require American to
repurchase
 
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<PAGE>
 
their American-EZ Notes at 101% of the principal amount, thereof, plus accrued
and unpaid interest, if any, to the date of the purchase. The EZ Merger
represented a Change of Control. As a result, American is required to purchase
all of the American-EZ Notes at 101% of their principal amount. Such offer
commenced on April 19, 1997 and expires May 19, 1997 and, to the extent it is
accepted, American will borrow the funds necessary to purchase tendered
American-EZ Notes under the applicable Credit Agreement. American will pay
$1,056.31 per $1,000 aggregate principal amount of EZ Notes tendered in
accordance with the offer to purchase.
 
  The American-EZ Notes are general unsecured obligations of American and are
not be subordinated by their express terms in right of payment to any existing
or future debt of American. The American-EZ Notes are guaranteed on a senior
subordinated basis by American's Restricted Subsidiaries. The American-EZ
Notes rank senior to the American Notes and pari passu in right of payment to
indebtedness outstanding under the Credit Agreements. The American-EZ Notes
contain substantially identical covenants to those contained in the American
Note Indenture (including without limitation those with respect to the payment
of dividends or the making of restricted payments).
 
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<PAGE>
 
                         DESCRIPTION OF CAPITAL STOCK
 
GENERAL
 
  The authorized capital stock of American consists of 100,000,000 shares of
Class A Common Stock, $.01 par value per share, 15,000,000 shares of Class B
Common Stock, $.01 par value per share, 6,000,000 shares of Class C Common
Stock, $.01 par value per share, and 10,000,000 shares of Preferred Stock,
$.01 par value per share. The outstanding shares of capital stock as of April
30, 1997 were as follows: Old Preferred Stock--2,047,391 shares; Convertible
Preferred Stock--137,500; Class A Common Stock--23,494,917; Class B Common
Stock--4,613,311 (exclusive of 18,449 shares held in treasury); and Class C
Common Stock--1,295,518. The following statements are subject to the detailed
provisions of the Restated Certificates of Incorporation of American and are
qualified in their entirety by reference to the Restated Certificates of
Incorporation, a copy of which has been filed as an exhibit to the
Registration Statement of which this Prospectus is a part and the summary
herein of certain provisions thereof does not purport to be complete and is
subject to, and is qualified in its entirety by, reference thereto.
 
PREFERRED STOCK
 
  All authorized and unissued shares of Preferred Stock may be issued with
such designations, preferences, limitations and relative rights as the Board
may authorize, including, but not limited to: (i) the distinctive designation
of each series and the number of shares that will constitute such series; (ii)
the voting rights, if any, of shares of such series; (iii) the dividend rate
on the shares of such series, any restriction, limitation or condition upon
the payment of such dividends, whether dividends shall be cumulative, and the
dates on which dividends are payable; (iv) the prices at which, and the terms
and conditions on which, the shares of such series may be redeemed, if such
shares are redeemable; (v) the purchase or sinking fund provisions, if any,
for the purchase or redemption of shares of such series; (vi) any preferential
amount payable upon shares of such series in the event of the liquidation,
dissolution or winding-up of American or the distribution of its assets; and
(vii) the price or rates of conversion at which, and the terms and conditions
on which the shares of such series may be converted into other securities, if
such shares are convertible. Although American has no present intention to
issue any additional shares of Preferred Stock, the issuance of Preferred
Stock, or the issuance of rights to purchase such shares, could discourage an
unsolicited acquisition proposal.
 
  Convertible Preferred Stock. American has issued an aggregate of 137,500
shares of Convertible Preferred Stock, liquidation preference $1,000 per
share. The Convertible Preferred Stock ranks, with respect to dividend rights
and rights on liquidation, winding upon and dissolution, senior to all classes
of Common Stock. Holders of the Convertible Preferred Stock are entitled to
receive, when, as and if declared by the American Board out of funds legally
available for payment, cash dividends at an annual rate of 7% ($70 per share).
In the event of any liquidation, winding up or dissolution of American, before
any distribution of assets is made on any Common Stock, the holders of the
Convertible Preferred Stock are entitled to receive a liquidation preference
of $1,000 per share, together with all accumulated and unpaid dividends
through the date of distribution. The Convertible Preferred Stock is
convertible at any time (except in the case of Convertible Preferred Stock
called for redemption which shall be convertible at any time prior to the
close of business on the Business Day prior to the redemption date), at the
option of the holder thereof, into shares of Class A Common Stock at an
initial conversion price of $42.50 per share, subject to adjust in certain
events. The Convertible Preferred Stock is redeemable for cash at any time
after July 15, 1999 at the option of American, in whole or in part, at a
redemption price initially of $1,049, declining ratably immediately after July
15 of each year thereafter to a redemption price of $1,000 per share after
July 15, 2006, together in each case with accrued and unpaid dividends.
 
  Except as provided by the DGCL or with respect to an amendment of the
Restated Certificate adversely affecting the rights of the Convertible
Preferred Stock, the holders of the Convertible Preferred Stock will not be
entitled to any voting rights except as follows: (i) in the event the
equivalent of six quarterly dividends payable on the Convertible Preferred
Stock are in arrears, the number of directors of American will be increased by
two
 
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<PAGE>
 
and the holders of the Convertible Preferred Stock, voting separately as a
class with the holders of shares of any other series of parity New Preferred
Stock upon which like voting rights have been conferred and are exercisable,
will be entitled to elect two directors, who shall serve until all dividends
in arrears have been paid or declared and set apart for payment or (ii) with
respect to the creation, authorization or issuance of capital stock ranking
senior (in certain respects) to the Convertible Preferred Stock.
 
  In the event of a Change in Control of American (as defined in the Restated
Certificate), each share of Convertible Preferred Stock may, at the option of
the holder, be convertible for a limited period into the number of shares of
Class A Common Stock determined by dividing the $1,000 liquidation preference
of the Convertible Preferred Stock, plus accumulated and unpaid dividends, if
any, by the Special Conversion Price. The term Special Conversion Price means,
in effect, the greater of (i) the average of the Last Sale Price (as defined
in the Restated Certificate) of a share of Class A Common Stock prior to the
Change in Control or (ii) $23.00. Upon a Change in Control, American may elect
to pay holders of the Convertible Preferred Stock exercising their special
conversion rights an amount in cash equal to the $1,000 liquidation preference
thereof, plus accumulated and unpaid dividends, if any.
 
  The Convertible Preferred Stock will be exchangeable, subject to certain
conditions, at the option of American, in whole but not in part, on any
dividend payment date commencing June 30, 1997, for American's 7% Convertible
Subordinated Debentures due 2011 (the "Convertible Exchange Debentures") at a
rate of $1,000 principal amount of Convertible Exchange Debentures for each
share of Convertible Preferred Stock. The Convertible Exchange Debentures will
have substantially the same economic terms as the Convertible Preferred Stock
except that upon a Change of Control the holders thereof will have the right
to require American to purchase their Convertible Exchange Debentures at a
price equal to the principal amount thereof, plus accrued and unpaid interest,
if any. The Convertible Exchange Debentures will, unless designated by
American prior to the issuance thereof, constitute Senior Debt for purposes of
American's other debt instruments.
 
  New Preferred Stock. For a description of the New Preferred Stock, see
"Description of the New Preferred Stock".
 
  Old Preferred Stock. The powers, preferences and relative rights of the Old
Preferred Stock are substantially identical to the New Preferred Stock, except
for the transfer restrictions imposed on the Old Preferred Stock.
 
COMMON STOCK
 
  Dividends. Holders of record of shares of Common Stock on the record date
fixed by the American Board are entitled to receive such dividends as may be
declared by the American Board out of funds legally available for such
purpose. No dividends may be declared or paid in cash or property on any share
of any class of Common Stock, however, unless simultaneously the same dividend
is declared or paid on each share of the other classes of Common Stock. In the
case of any stock dividend, holders of each class of Common Stock are entitled
to receive the same percentage dividend (payable in shares of that class) as
the holders of each other class.
 
  Voting Rights. Except as otherwise required by law and in the election of
directors, holders of shares of Class A Common Stock and Class B Common Stock
have the exclusive voting rights and will vote as a single class on all
matters submitted to a vote of the stockholders, with each share of Class A
Common Stock entitled to one vote and each share of Class B Common Stock
entitled to ten votes. The holders of the Class A Common Stock, voting as a
separate class, have the right to elect two independent directors.
 
  Under Delaware law, the affirmative vote of the holders of a majority of the
outstanding shares of any class of common stock is required to approve, among
other things, a change in the designations, preferences and limitations of the
shares of such class of common stock. Under the Restated Certificate, the
affirmative vote of the holders of not less than 66 2/3% of the Class A Common
Stock and Class B Common Stock, voting as a single class, is required in order
to amend most of the provisions of the Restated Certificate, including those
relating to
 
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<PAGE>
 
the provisions of the various classes of Common Stock, indemnification of
directors, exoneration of directors for certain acts, and such super-majority
provision.
 
  Conversion Provisions. Shares of Class B Common Stock and, except as
hereinafter noted, Class C Common Stock, are convertible, at any time at the
option of the holder, on a share for share basis into shares of Class A Common
Stock. Class C Common Stock may not be converted into Class A Common Stock if,
as a result thereof, the holder would be a Disqualified Person (as defined in
the Restated Certificate) or would cause a violation of the alien ownership
restrictions set forth in the Restated Certificate. In addition, the owner of
Class C Common Stock can convert such stock only in the event of a Conversion
Event (as defined in the Restated Certificate). Shares of Class B Common Stock
automatically convert into shares of Class A Common Stock upon any sale,
transfer, assignment or other disposition other than to Permitted Transferees
(as defined in the Restated Certificate), which term includes certain family
members, trusts and other family entities and charitable organizations and
upon pledges but not to the pledgee upon foreclosure.
 
  Liquidation Rights. Upon liquidation, dissolution or winding-up of American,
the holders of each class of Common Stock are entitled to share ratably (based
on the number of shares held) in all assets available for distribution after
payment in full of creditors and payment in full to any holders of the
Preferred Stock then outstanding of any amount required to be paid under the
terms of the Preferred Stock.
 
  Other Provisions. The holders of Common Stock are not entitled to preemptive
or subscription rights. The shares of Common Stock presently outstanding are
validly issued, fully paid and nonassessable. In any merger, consolidation or
business combination, the consideration to be received per share by holders of
each class of Common Stock must be identical to that received by holders of
the other class of Common Stock, except that in any such transaction in which
shares of Common Stock are distributed, such shares may differ as to voting
rights to the extent that voting rights now differ between the different
classes of Common Stock. No class of Common Stock may be subdivided,
consolidated, reclassified or otherwise changed unless, concurrently, the
other classes of Common Stock are subdivided, consolidated, reclassified or
otherwise changed in the same proportion and in the same manner.
 
  Each new issuance of Common Stock shall be an issuance of Class A Common
Stock or Class C Common Stock, except for up to an aggregate of 1,600,000
shares of Class B Common Stock issuable pursuant to the Amended and Restated
Stock Option Plan of American or except in connection with stock splits,
dividends or combinations.
 
DIVIDEND RESTRICTIONS
 
  American is prohibited under the terms of the Credit Agreements from paying
cash dividends on its capital stock (including Preferred Stock other than, in
the absence of a default or event of default, the Convertible Preferred Stock,
the Old Preferred Stock and the New Preferred Stock) except that, beginning on
January 1, 1999, American may pay cash dividends if (a)(i) the ratio of Total
Debt to Consolidated Annual Operating Cash Flow is less than 4.5 to one or
(ii) the ratio of Total Debt to Consolidated Annual Operating Cash Flow is
less than 5.0 to one and the ratio of Senior Debt to Consolidated Annual
Operating Cash Flow is less than 3.0 to one, and (b) then only to the extent
that Restricted Payments do not exceed 50% of Cumulative Excess Cash Flow for
the period commencing January 1, 1998 minus aggregate Restricted Payments (as
each such term is defined in the Credit Agreements). Accordingly, American's
ability to pay dividends to its stockholders is restricted. The Note
Indentures also restrict the ability of American to pay dividends. See the
Notes to Consolidated Financial Statements of American in the Consolidated
Financial Statements of American incorporated herein by reference.
 
  American may elect to pay dividends on the New Preferred Stock on any
dividend payment date occurring on or before January 15, 2002 by issuing
additional shares of New Preferred Stock. If at any time American is in cash
dividend arrears on the Convertible Preferred Stock or any other Parity
Securities (as defined under "Description of the New Preferred Stock--
Ranking"), whether as a result of payment restrictions contained in American's
debt instruments or otherwise, American will be permitted to pay dividends on
the New Preferred
 
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Stock only pro rata with such Parity Securities (if at all), even if American
elects to pay such dividends by issuing additional shares of New Preferred
Stock.
 
OWNERSHIP RESTRICTIONS
 
  The Restated Certificate restricts the ownership, voting and transfer of
American's capital stock, including the Class A Common Stock, in accordance
with the Communications Act and the rules of the FCC, to prohibit ownership of
American's outstanding capital stock (or the voting rights it represents) by
or for the account of aliens or corporations otherwise subject to domination
or control by aliens. The Restated Certificate also has provisions designed to
restrict the ownership of the Common Stock to ameliorate a breach or violation
of or default under the FCC's "cross-ownership" or multiple ownership rules,
"cross-interest" policy and other rules and policies. The Restated Certificate
provides that, in the event of a violation of any of these prohibitions,
American has the right, in its sole and absolute discretion, to require a
conversion of Class B Common Stock into Class C Common Stock. In addition, the
Restated Certificate authorizes the American Board to adopt such provisions as
it deems necessary to enforce these prohibitions. See "Business--Federal
Regulation of Radio Broadcasting--Ownership Matters".
 
DELAWARE BUSINESS COMBINATION PROVISIONS
 
  Under the Delaware General Corporation Law, certain "business combinations"
(including the issuance of equity securities) between a Delaware corporation
and any person who owns, directly or indirectly, 15% or more of the voting
power of the corporation's shares of capital stock (an "Interested
Stockholder") must be approved by the holders of at least 66% of the voting
stock not owned by the Interested Stockholder if it occurs within three years
of the date such person became an Interested Stockholder unless prior to such
date the Board of Directors approved either the business combination or the
transaction which resulted in the stockholder becoming an Interested
Stockholder. The transactions pursuant to which each of Messrs. Dodge and
Stoner became an Interested Stockholder were approved by the American Board.
 
TRANSFER AGENT AND REGISTRAR
 
  The Transfer Agent and Registrar for the Class A Common Stock is Harris
Trust and Savings Bank, 311 West Monroe Street, Chicago, Illinois 60606
(telephone number is (312) 461-5044).
 
LISTING
 
  The Class A Common Stock is listed on the New York Stock Exchange and trades
under the symbol "AFM".
 
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<PAGE>
 
                    CERTAIN FEDERAL INCOME TAX CONSEQUENCES
 
  The following discussion is a summary of certain federal income tax
considerations relevant to the exchange of Old Preferred Stock for New
Preferred Stock, but does not purport to be a complete analysis of all
potential tax consequences of such exchange. It also summarizes certain
federal income tax considerations relevant to the ownership and disposition of
the New Preferred Stock and the Exchange Debentures by the initial holders of
the Old Preferred Stock and the Exchange Debentures, but does not purport to
be a complete analysis of all the potential tax effects thereof. Further, the
discussion below is not binding on the Internal Revenue Service (the "IRS") or
the courts. American has not sought and will not seek any rulings from the IRS
with respect to the positions discussed herein, and there can be no assurance
that the IRS will not take a different position concerning the tax
consequences of the exchange of the Old Preferred Stock for the New Preferred
Stock or the ownership or disposition of the New Preferred Stock or the
Exchange Debentures, or that any such position would not be sustained.
 
  The following discussion is limited to certain United States federal income
tax consequences relevant to a holder of the New Preferred Stock or the
Exchange Debentures that is a citizen or resident of the United States, or a
corporation or other entity created or organized under the laws of the United
States or any political subdivision thereof, or an estate or trust the income
of which is subject to United States federal income tax regardless of source,
or that is otherwise subject to United States federal income tax on a net
income basis in respect of the New Preferred Stock or the Exchange Debentures.
Further, the discussion does not address all aspects of taxation that may be
relevant to particular purchasers in light of their particular circumstances
(including the effect of any foreign, state or local tax laws) or to certain
types of purchasers subject to special treatment under the federal income tax
laws (including dealers in securities or foreign currency, insurance
companies, foreign persons, financial institutions, tax-exempt entities,
persons that hold New Preferred Stock or Exchange Debentures as part of a
straddle, conversion or hedging transaction for federal income tax purposes,
persons that have a functional currency other than the U.S. dollar or
(generally) holders subject to the alternative minimum tax). In addition, the
summary is limited to persons that will hold the New Preferred Stock or any
Exchange Debentures received in exchange therefor as "capital assets"
(generally, property held for investment) within the meaning of section 1221
of the Internal Revenue Code of 1986, as amended (the "Code").
 
  The discussion of the federal income tax consequences set forth below is
based upon currently existing provisions of the Code, the final, temporary and
proposed regulations promulgated thereunder, judicial decisions and
administrative interpretations now in effect, all of which are subject to
change (possibly with adverse retroactive effect) or different
interpretations. Because individual circumstances may differ, each prospective
owner of New Preferred Stock is strongly urged to consult its own tax advisor
with respect to its particular tax situation and the effects of any state,
local, foreign or other tax laws and possible changes in the tax laws.
 
  Although the matter is not entirely free from doubt, for federal income tax
purposes the New Preferred Stock should be treated as equity and the Exchange
Debentures should be treated as indebtedness. American intends to treat the
New Preferred Stock and the Exchange Debentures consistent with the foregoing
classifications, and the balance of the discussion is based on the assumption
that such treatment will be respected.
 
EXCHANGE OF THE OLD PREFERRED STOCK PURSUANT TO THE EXCHANGE OFFER
 
  Except to the extent of New Preferred Stock, if any, received in payment of
declared but unpaid dividends on the Old Preferred Stock (which amount will be
taxed as a dividend distribution to the extent of fair market value under the
rules discussed below), an exchange of Old Preferred Stock for New Preferred
Stock pursuant to the Exchange Offer should not result in a taxable event to a
holder for federal income tax purposes. Accordingly, the New Preferred Stock
should be regarded for federal income tax purposes as a continuation of the
Old Preferred Stock, and a holder should have the same adjusted basis and
holding period in the New Preferred Stock upon receipt as it had in the Old
Preferred Stock immediately before the exchange.
 
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<PAGE>
 
DIVIDENDS ON NEW PREFERRED STOCK
 
  Dividends on the New Preferred Stock paid in cash will be taxable as
ordinary income to the extent of American's current or accumulated earnings
and profits for federal income tax purposes. While the matter is not free from
doubt, in the case of dividends on the New Preferred Stock paid in the form of
additional New Preferred Stock ("Dividend Shares"), the fair market value of
Dividend Shares on the date of their distribution will be taxable as ordinary
income to the extent of American's current or accumulated earnings and profits
for federal income tax purposes.
 
  To the extent that the foregoing amount of distributions paid on the New
Preferred Stock, whether paid in cash or in Dividend Shares, exceeds
American's current or accumulated earnings and profits for federal income tax
purposes, such distributions will be treated first as a return of capital and
will be applied against and reduce the adjusted tax basis of the New Preferred
Stock in the hands of the holder. Any remaining amount after the holder's
basis has been reduced to zero will be taxed as capital gain and will be long-
term capital gain if the holder's holding period for the New Preferred Stock
exceeds one year. American may have accumulated earnings and profits for
federal income tax purposes as of the date of the Exchange Offer, and current
earnings and profits for 1997 and future years will be computed annually at
the close of the taxable year in which the distribution is paid. For purposes
of the remainder of this discussion, the term "dividend" refers to a
distribution paid out of allocable earnings and profits as described above
unless the context indicates otherwise.
 
  A holder's initial tax basis in any Dividend Shares distributed to it will
generally equal the fair market value of such Dividend Shares on the date of
their distribution. The holding period for such Dividend Shares will commence
with their acquisition and will not include the holder's holding period for
the outstanding shares of New Preferred Stock on which such Dividend Shares
were distributed.
 
  Dividends received by corporate holders will be eligible for the 70%
dividends-received deduction under section 243 of the Code, subject to the
limitations contained in sections 246 and 246A of the Code. Under section
246(c) of the Code, the 70% dividends-received deduction will not be available
with respect to shares of New Preferred Stock which are held for 45 days or
less (90 days in the case of a dividend attributable to a period or periods
aggregating more than 366 days), including the day of disposition, but
excluding the day of acquisition or any day which is more than 45 days (or 90
days in the case of the more than 366 day period) after the date on which the
New Preferred Stock becomes ex-dividend. The length of time that a holder is
deemed to have held shares for these purposes is reduced for periods during
which the holder's risk of loss with respect to the stock is diminished by
reason of the existence of certain options, contracts to sell, short sales or
other similar transactions. Section 246(c) also denies the dividends-received
deduction to the extent that a corporate holder is under an obligation with
respect to substantially similar or related property to make payments
corresponding to the dividend received. Under section 246(b) of the Code, the
aggregate dividends-received deductions allowed may not exceed 70% of the
taxable income (with certain adjustments) of the corporate holder. Moreover,
under section 246A of the Code, to the extent that a corporate holder incurs
indebtedness "directly attributable" to investment in the New Preferred Stock
and the New Preferred Stock constitutes "debt financed portfolio stock" within
the meaning of section 246A(c)(1) of the Code, the dividends-received
deduction is proportionately reduced.
 
  In general, for purposes of computing its alternative minimum tax liability,
a corporation claiming a 70% dividends-received deduction will be required to
include in its alternative minimum taxable income a portion of any dividends-
received deduction allowed in computing its regular taxable income. Thus, a
corporate holder's liability for alternative minimum tax may fail to be
reduced as a result of any dividends-received deduction.
 
  On February 6, 1997, President Clinton proposed certain tax law changes (the
"Proposed Legislation") which, among other things, would reduce the dividends-
received deduction under section 243 of the Code from 70% to 50%, and would
alter the limitations contained in section 246 of the Code to provide that the
dividends-received deduction would not be available with respect to New
Preferred Stock held for 45 days or less during
 
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<PAGE>
 
the 90-day period beginning on the date which is 45 days before the date on
which shares of New Preferred Stock become ex-dividend with respect to such
dividend. Moreover, in the case of dividends attributable to a period or
periods aggregating more than 366 days, the dividends-received deduction would
not be available with respect to New Preferred Stock held for 90 days or less
during the 180-day period beginning on the date which is 90 days before the
date on which shares of New Preferred Stock become ex-dividend with respect to
such dividend. Although the Proposed Legislation prescribes a prospective
effective date for the foregoing proposed provisions, in its current form the
Proposed Legislation provides no grandfather protection for stock issued prior
to such effective date, and therefore if enacted could apply to dividends paid
on the New Preferred Stock after such effective date. The Proposed Legislation
also contains a provision that would eliminate the dividends-received
deduction for certain types of preferred stock. A description of this
legislative proposal suggests that the New Preferred Stock could be the type
of preferred stock to which the eliminated dividends-received deduction would
apply. According to this description, the foregoing legislative proposal would
only apply to preferred stock issued after the thirtieth day after the date of
enactment, which could include the Dividend Shares issued in lieu of cash
dividends. On May 2, 1997, Congressional leaders and the President announced
that they had reached agreement on a plan to eliminate the federal budget
deficit, and it may be that the Proposed Legislation, or portions of it, will
ultimately be enacted as part of such plan. However, it is not clear whether
any such proposals ultimately will be enacted or, if enacted, will be enacted
in the form proposed. There can thus be no assurance that the Proposed
Legislation, or other legislation enacted after the date hereof, will not
adversely affect the tax treatment of the New Preferred Stock.
 
  Section 1059 of the Code requires a corporate holder to reduce its basis
(but not below zero) in the New Preferred Stock by the "nontaxed portion" of
any "extraordinary dividend" if the holder has not held its New Preferred
Stock for more than two years as of the date the amount or payment of such
dividend is agreed to, announced or declared. Generally, the nontaxed portion
of an extraordinary dividend is the amount excluded from income under section
243 of the Code (relating to the dividends-received deduction). An
"extraordinary dividend" on the New Preferred Stock would include a dividend
that (i) equals or exceeds 5% of the holder's adjusted tax basis in the
underlying New Preferred Stock, treating all dividends having ex-dividend
dates within an 85-day period as one dividend, or (ii) exceeds 20% of the
holder's adjusted tax basis in the underlying New Preferred Stock, treating
all dividends having ex-dividend dates within a 365-day period as one
dividend. In determining whether a dividend paid is an extraordinary dividend,
a holder may elect to use the fair market value of the underlying New
Preferred Stock rather than its basis for purposes of applying the 5% (or 20%)
limitation if the holder is able to establish to the satisfaction of the
Secretary of the Treasury such fair market value as of the day before the ex-
dividend date. An "extraordinary dividend" would also include any amount
treated as a dividend in the case of a redemption of the New Preferred Stock
that is non-pro rata as to all holders, without regard to the period the
holder held the stock. If any part of the nontaxed portion of an extraordinary
dividend has not been applied to reduce basis as a result of the limitation on
reducing basis below zero, the amount thereof will be treated as gain from the
sale or exchange of stock when such stock is disposed of or sold. The Proposed
Legislation would require immediate recognition of gain under section 1059 of
the Code to the extent a corporate holder's tax basis would otherwise be
reduced below zero, instead of deferring such gain until the sale or exchange
of such stock; such change is proposed to take effect retroactively. On May 2,
1997, Congressional leaders and the President announced that they had reached
agreement on a plan to eliminate the federal budget deficit, and it may be
that the Proposed Legislation, or portions of it, will ultimately be enacted
as part of such plan. However, it is not clear whether any such proposals
ultimately will be enacted or, if enacted, will be enacted in the form
proposed. There can thus be no assurance that the Proposed Legislation, or
other legislation enacted after the date hereof, will not adversely affect the
tax treatment of the New Preferred Stock.
 
  The extraordinary dividend rules of section 1059 of the Code do not apply
with respect to "qualified preferred dividends". A "qualified preferred
dividend" is any fixed dividend payable with respect to New Preferred Stock
which (i) provides for fixed preferred dividends payable no less often than
annually and (ii) is not in arrears as to dividends when acquired, provided
the actual rate of return, as determined under section 1059(e)(3) of the Code,
on such stock does not exceed 15%. It is not clear whether dividends that may
be paid either in cash or instead at the issuer's option in additional
preferred stock will qualify as qualified preferred dividends. Where a
qualified preferred dividend exceeds the 5% (or 20%) threshold for
extraordinary dividend
 
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<PAGE>
 
status described above, (i) the extraordinary dividend rules will not apply to
such qualified preferred dividend if the holder holds the stock for more than
five years, and (ii) if the holder disposes of the stock before it has been
held for more than five years, the aggregate reduction in basis with respect
to qualified preferred dividends will not exceed the excess of the qualified
preferred dividends paid on such stock during the period held by the holder
over the qualified preferred dividends which would have been paid during such
period on the basis of the "stated rate" of return, as determined under
section 1059(e)(3) of the Code. The length of time that a holder is deemed to
have held stock for purposes of section 1059 of the Code is determined under
principles similar to those contained in section 246(c) of the Code discussed
above.
 
  CORPORATE HOLDERS ARE URGED TO CONSULT THEIR TAX ADVISORS WITH RESPECT TO
THE POSSIBLE APPLICATION OF SECTION 1059 OF THE CODE TO THEIR OWNERSHIP AND
DISPOSITION OF THE NEW PREFERRED STOCK, AND THE POSSIBLE EFFECTS OF PROPOSED
LEGISLATION OR OTHER CHANGES IN THE TAX LAWS.
 
REDEMPTION PREMIUM
 
  The New Preferred Stock is subject to mandatory redemption on January 15,
2009 (the "Mandatory Redemption"), and American must offer to redeem each
share of New Preferred Stock under certain circumstances involving a Change of
Control (the "Change of Control Redemption"). In addition, after January 15,
2002 and subject to certain limitations, the New Preferred Stock is redeemable
at any time at the option of American at specified redemption prices, and
prior to January 15, 2000 American may at its option use the net proceeds of
one or more Public or Rule 144A Equity Offerings to redeem the New Preferred
Stock at the specified redemption price (together, the "Optional Redemption").
Also, on any dividend payment date commencing July 15, 1997 and subject to
certain restrictions, American may at its option redeem all (and not less than
all) of the New Preferred Stock in exchange for Exchange Debentures in an
aggregate principal amount equal to the liquidation preference of the New
Preferred Stock (the "Debenture Exchange"). See "Description of the New
Preferred Stock--Optional Redemption", "--Mandatory Redemption", "--Change of
Control", and "--Exchange Provisions".
 
  If the redemption price of redeemable New Preferred Stock exceeds its issue
price, all or a portion of such excess may, pursuant to section 305(c) of the
Code, constitute an excess premium (the "Preferred Stock Discount") that is
treated as a series of constructive distributions of property (and thus as
dividends to the extent of American's current or accumulated earnings and
profits, and otherwise as distributions subject to the treatment described
above) over the period during which the New Preferred Stock cannot be called
for redemption under an economic accrual method similar to the method
described below under "--Original Issue Discount" and "--Taxation of Stated
Interest and Original Issue Discount on Exchange Debentures". For this
purpose, Preferred Stock Discount will generally be treated as zero if it is
less than 1/4 of 1% of the redemption price multiplied by the number of
complete years from the date of issuance of the stock until the stock is to be
redeemed.
 
  Under Treasury Regulations promulgated under section 305 of the Code,
Preferred Stock Discount will arise due to the Optional Redemption feature
only if, based on all of the facts and circumstances as of the date the New
Preferred Stock is issued, redemption pursuant to the Optional Redemption is
more likely than not to occur. Even if such redemption were more likely than
not to occur, however, constructive distribution treatment would not result if
the redemption premium were solely in the nature of a penalty for premature
redemption. For this purpose, a penalty for premature redemption is a premium
paid as a result of changes in economic or market conditions over which
neither the issuer nor the holder has legal or practical control, such as
changes in prevailing dividend rates. The Treasury Regulations provide a safe
harbor pursuant to which constructive distribution treatment will not result
from an issuer call right if (i) the issuer and the holder are unrelated, (ii)
there are no arrangements that effectively require the issuer to redeem the
stock, and (iii) exercise of the option to redeem would not reduce the yield
of the stock. American believes that, under the foregoing criteria, the
Optional Redemption feature does not give rise to Preferred Stock Discount,
and accordingly American will not report redemption premium associated with
the Optional Redemption feature as a constructive distribution. However,
because of the factual nature of this determination, there can be no assurance
that such treatment will be sustained.
 
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<PAGE>
 
  Under the Treasury Regulations promulgated under section 305 of the Code,
Preferred Stock Discount will arise due to the Change of Control Redemption
feature only if, (i) under the same criteria discussed above with regard to
the Optional Redemption feature, a Change of Control Redemption is more likely
than not to occur and in addition the redemption premium associated with such
redemption is other than solely in the nature of a penalty for premature
redemption, or (ii) triggering American's obligation to redeem under the
Change of Control Redemption feature is within the legal or practical control
of the holders of the New Preferred Stock (or parties related thereto) and
based on all the facts and circumstances on the issue date such possibility of
redemption is more than remote. American believes that, under the foregoing
criteria, the Change of Control Redemption feature does not give rise to
Preferred Stock Discount, and accordingly American will not report redemption
premium associated with the Change of Control Redemption feature as a
constructive distribution. However, because of the factual nature of this
determination, there can be no assurance that such treatment will be
sustained.
 
  Because the redemption price associated with the Mandatory Redemption and
the Debenture Exchange is equal to the liquidation preference of the New
Preferred Stock, and because the issue price for the Old Preferred Stock
(exclusive of any shares thereof that were issued as a dividend distribution)
was at or above its liquidation preference of $100 per share, the Mandatory
Redemption and Debenture Exchange features should generally result in no
Preferred Stock Discount for the New Preferred Stock. However, Dividend Shares
received by holders of the New Preferred Stock (including New Preferred Stock
received in exchange for shares of Old Preferred Stock that were issued as a
dividend distribution) will bear Preferred Stock Discount if the redemption
price for such shares exceeds, by more than the de minimis threshold described
above, the issue price of such shares (i.e., the fair market value of such
shares on the date of their distribution).
 
REDEMPTION, SALE OR EXCHANGE OF NEW PREFERRED STOCK
 
  A redemption of shares of New Preferred Stock for cash or an exchange of
shares of New Preferred Stock for Exchange Debentures will be a taxable event.
If New Preferred Stock is exchanged for Exchange Debentures, the "issue price"
of the Exchange Debentures would be determined in the manner described below
for purposes of computing original issue discount (if any) on Exchange
Debentures according to the Treasury Regulations relating to original issue
discount (the "OID Regulations"). See the discussion below under "--Original
Issue Discount". Applicable Treasury Regulations generally provide that if a
holder disposes of property in exchange for a debt instrument, the amount
realized in the exchange attributable to the debt instrument is the issue
price of the debt instrument as determined for purposes of determining
original issue discount. The balance of this discussion assumes that the issue
price of an Exchange Debenture should be taken into account for purposes of
computing the amount of gain or loss or income realized by a holder upon the
exchange of New Preferred Stock, and such holder's tax basis in an Exchange
Debenture.
 
  A redemption of shares of New Preferred Stock for cash will be treated as a
dividend to the extent of American's current or accumulated earnings and
profits, unless the redemption (i) results in a "complete termination" of the
holder's stock interest in American under section 302(b)(3) of the Code, (ii)
is "substantially disproportionate" with respect to the holder under section
302(b)(2) of the Code, or (iii) is "not essentially equivalent to a dividend"
with respect to the holder under section 302(b)(1) of the Code. In determining
whether any of these tests has been met, the holder must take into account not
only stock it actually owns, but also stock it constructively owns within the
meaning of section 318 of the Code. A distribution to a holder is "not
essentially equivalent to a dividend" if it results in a "meaningful
reduction" in the holder's stock interest in American, but there cannot always
be certainty as to when such "meaningful reduction" has occurred because the
applicable test is not based on numerical criteria. Satisfaction of the
"complete termination" and "substantially disproportionate" exceptions is
dependent upon compliance with the objective tests set forth in sections
302(b)(3) and 302(b)(2) of the Code, respectively.
 
  If the redemption is not treated as a distribution taxable as a dividend,
the redemption of the New Preferred Stock for cash would result in taxable
gain or loss equal to the difference between the amount of cash received
 
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<PAGE>
 
(except to the extent that the redemption price includes declared but unpaid
dividends prior to the redemption) and the holder's adjusted tax basis in the
New Preferred Stock redeemed. Such gain or loss would be capital gain or loss
and would be long-term capital gain or loss if the holding period for such New
Preferred Stock exceeded one year. An exchange of New Preferred Stock for
Exchange Debentures at the option of American will be subject to the same
general rules as a redemption for cash. If the exchange is treated as other
than a distribution taxable as a dividend, the holder of such New Preferred
Stock would recognize gain or loss equal to the difference between the issue
price of Exchange Debentures received and the holder's adjusted tax basis in
the New Preferred Stock redeemed. Such gain or loss would be capital gain or
loss and would be long-term capital gain or loss if the holding period for the
New Preferred Stock exceeded one year.
 
  A sale of New Preferred Stock will generally result in taxable gain or loss
equal to the difference between the amount of cash received and the holder's
adjusted tax basis in the New Preferred Stock sold. Such gain or loss would be
capital gain or loss and would be long-term capital gain or loss if the
holding period for the New Preferred Stock exceeded one year.
 
  If a redemption of the New Preferred Stock is treated as a distribution that
is taxable as a dividend, the amount of the distribution will be measured by
the amount of cash or the issue price of the Exchange Debentures, as the case
may be, received by the holder. The holder's adjusted tax basis in the
redeemed New Preferred Stock will be transferred to any remaining stock
holdings in American. If the holder does not retain any actual stock ownership
in American (only having a stock interest constructively), the holder may lose
such basis entirely. Under the "extraordinary dividend" provisions of section
1059 of the Code, a corporate holder may, under certain circumstances, be
required to reduce its basis in its remaining shares of stock of American (and
possibly recognize gain upon a disposition of such shares) to the extent the
holder claims the dividends-received deduction with respect to the dividend.
See the discussion above under "--Dividends on New Preferred Stock".
 
  Depending upon a holder's particular circumstances, the tax consequences of
holding Exchange Debentures may be less advantageous than the tax consequences
of holding New Preferred Stock because, for example, payments of interest on
the Exchange Debentures will not be eligible for any dividends-received
deduction that may be available to corporate holders of New Preferred Stock.
 
ORIGINAL ISSUE DISCOUNT
 
  In the event that the New Preferred Stock is exchanged for Exchange
Debentures and the "stated redemption price at maturity" of the Exchange
Debentures exceeds their "issue price" by more than a de minimis amount ( 1/4
of 1% of the stated redemption price at maturity multiplied by the number of
complete years to maturity), the Exchange Debentures will be treated as having
original issue discount ("OID") equal to the entire amount of such excess.
 
  Issue Price. If the Exchange Debentures are traded on an established
securities market within the sixty-day period ending thirty days after the
exchange date, the issue price of the Exchange Debentures will be their fair
market value as of their issue date. Subject to certain limitations described
in the OID Regulations, the Exchange Debentures will be deemed to be traded on
an established securities market if, among other things, price quotations will
be readily available from dealers, brokers, or traders. If the New Preferred
Stock, but not the Exchange Debentures issued and exchanged therefor, is
traded on an established securities market within the sixty-day period ending
thirty days after the exchange, then the issue price of each Exchange
Debenture should be the fair market value of the New Preferred Stock exchanged
therefor at the time of the exchange. The New Preferred Stock generally will
be deemed to be traded on an established securities market if, among other
things, it appears on a system of general circulation that provides a
reasonable basis to determine fair market value based on either recent price
quotations or recent sales transactions. In the event that neither the New
Preferred Stock nor the Exchange Debentures are traded on an established
securities market within the applicable period, the issue price of the
Exchange Debentures will be their stated principal amount--namely, their face
value--unless either (i) the Exchange Debentures do not bear "adequate stated
interest" within the meaning of section 1274 of the Code, which is unlikely,
or (ii) also unlikely, the Exchange Debentures are issued in a so-called
"potentially
 
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<PAGE>
 
abusive situation" as defined in the OID Regulations under section 1274 of the
Code (including a situation involving a recent sales transaction), in which
case the issue price of such Exchange Debentures generally will be the fair
market value of the New Preferred Stock surrendered in exchange therefor.
 
  Stated Redemption Price at Maturity. The "stated redemption price at
maturity" of the Exchange Debentures will equal the total of all payments
under the Exchange Debentures, other than payments of "qualified stated
interest." "Qualified stated interest" generally is stated interest that is
unconditionally payable in cash or other property (other than an additional
debt instrument of the issuer) at least annually at a single fixed rate.
Exchange Debentures that are issued when American has the option to pay
interest for certain periods in additional Exchange Debentures should be
treated as having been issued without any qualified stated interest.
Accordingly, the sum of all interest payable pursuant to the stated interest
rate on such Exchange Debentures over the entire term should be included
(along with stated principal) in the stated redemption price at maturity of
such Exchange Debentures. On the other hand, if the Exchange Debentures are
issued after the period for paying interest in additional Exchange Debentures
has passed, then interest thereon would qualify as qualified stated interest
and none of such interest would be included in the stated redemption price at
maturity of the Exchange Debentures.
 
TAXATION OF STATED INTEREST AND ORIGINAL ISSUE DISCOUNT ON EXCHANGE DEBENTURES
 
  Each holder of an Exchange Debenture with OID will be required to include in
gross income an amount equal to the sum of the "daily portions" of the OID for
all days during the taxable year in which such holder holds the Exchange
Debenture, even though the cash to which such income is attributable may not
be received until sale, redemption, or maturity of the Exchange Debenture. The
daily portions of OID required to be included in a holder's gross income in a
taxable year will be determined under a constant yield method by allocating to
each day during the taxable year in which the holder holds the Exchange
Debenture a pro rata portion of the OID thereon which is attributable to the
"accrual period" in which such day is included. The amount of the OID
attributable to each accrual period will be the product of the "adjusted issue
price" of the Exchange Debenture at the beginning of such accrual period
multiplied by the "yield to maturity" of the Exchange Debenture (properly
adjusted for the length of the accrual period). The adjusted issue price of an
Exchange Debenture at the beginning of an accrual period is the original issue
price of the Exchange Debenture plus the aggregate amount of OID that accrued
in all prior accrual periods, and less any cash payments (other than qualified
stated interest payments, which can only apply if the Exchange Debentures were
issued on or after January 15, 2002) on the Exchange Debenture. The "yield to
maturity" is the discount rate that, when used in computing the present value
of all principal and interest payments to be made under the Exchange
Debenture, produces an amount equal to the issue price of the Exchange
Debenture. An "accrual period" may be of any length and may vary in length
over the term of the debt instrument, provided that each accrual period is no
longer than one year and each scheduled payment of principal or interest
occurs either on the final day or the first day of an accrual period. In
general, the foregoing constant yield method will result in the allocation of
less OID to the early years of the term of the Exchange Debentures and more
for later years.
 
  An additional Exchange Debenture (a "Secondary Debenture") issued in payment
of interest with respect to an initially issued Exchange Debenture (an
"Initial Debenture") will not be considered as a payment made on the Initial
Debenture and will instead be aggregated with the Initial Debenture for
purposes of computing and accruing OID on the Initial Debenture. As between
the Initial Debenture and the Secondary Debenture, the adjusted issue price of
the Initial Debenture would be allocated between the Initial Debenture and the
Secondary Debenture in proportion to their respective principal amounts. That
is, upon the issuance of a Secondary Debenture with respect to an Initial
Debenture, the Initial Debenture and the Secondary Debenture derived from the
Initial Debenture are treated as initially having the same adjusted issue
price and inherent amount of OID per dollar of principal amount. The Initial
Debenture and the Secondary Debenture derived therefrom also would be treated
as having the same yield to maturity. Similar treatment would be applied when
additional Exchange Debentures are issued on Secondary Debentures.
 
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<PAGE>
 
  In the event that the Exchange Debentures are issued on or after January 15,
2002, when American no longer has the option to pay interest thereon in
additional Exchange Debentures, stated interest would be included in income by
a holder in accordance with such holder's usual method of accounting. In all
other cases, all stated interest will be treated as payments on the Exchange
Debentures under the rules discussed above.
 
  American will furnish annually to the IRS and to record holders of the
Exchange Debentures information relating to the OID, if any, accruing during
the calendar year. Such information will be based on the amount of OID that
would have accrued to a holder who acquired the Exchange Debenture on original
issue. Accordingly, other holders will be required to determine for themselves
whether they are eligible to report a reduced amount of OID for federal income
tax purposes.
 
BOND PREMIUM ON EXCHANGE DEBENTURES
 
  If the holder's basis in the Exchange Debentures exceeds the amount payable
at the maturity date (or earlier call date, if appropriate), such excess will
be deductible by the holder of the Exchange Debentures as amortizable bond
premium over the term of the Exchange Debentures (taking into account earlier
call dates, as appropriate), under a yield-to-maturity formula, if an election
by the holder under section 171 of the Code is made or is already in effect.
An election under section 171 of the Code is available only if the Exchange
Debentures are held as capital assets. This election is revocable only with
the consent of the IRS and applies to all obligations owned or subsequently
acquired by the holder on or after the first day of the taxable year to which
the election applies. To the extent the excess is deducted as amortizable bond
premium, the holder's adjusted tax basis in the Exchange Debentures will be
reduced. Except as may otherwise be provided in future Treasury Regulations,
the amortizable bond premium will be treated as an offset to interest income
on the Exchange Debentures rather than as a separate deduction item. Proposed
regulations with a prospective effective date coordinate these amortizable
bond premium rules with the acquisition premium rules described in "--
Acquisition Premium on Exchange Debentures" below, and in general would defer
to the operation of these acquisition premium rules in the case of Exchange
Debentures issued before January 15, 2002, when American has the option to pay
interest on Exchange Debentures in additional Exchange Debentures (thus
precluding stated interest thereon from being qualified stated interest).
 
ACQUISITION PREMIUM ON EXCHANGE DEBENTURES
 
  A holder of an Exchange Debenture issued with OID who purchases such
Exchange Debenture for an amount that is greater than its then adjusted issue
price but equal to or less than the sum of all amounts payable on the Exchange
Debenture after the purchase date (other than payments, if any, of qualified
stated interest) will be considered to have purchased such Exchange Debenture
at an "acquisition premium." Under the acquisition premium rules, the amount
of OID which such holder must include in income with respect to such Exchange
Debenture for any taxable year will be reduced by the portion of such
acquisition premium properly allocable to such year.
 
MARKET DISCOUNT ON EXCHANGE DEBENTURES
 
  Purchasers of New Preferred Stock should be aware that the disposition of
Exchange Debentures may be affected by the market discount provisions of the
Code. The market discount rules generally provide that if a holder of a debt
instrument purchases it at a "market discount" and thereafter realizes gain
upon a disposition or a retirement of the debt instrument, the lesser of such
gain or the portion of the market discount that has accrued on a straight-line
basis (or on a constant interest rate basis, if such alternative rate of
accrual has been elected by the holder under section 1276(b) of the Code)
while the debt instrument was held by such holder will be taxed as ordinary
income at the time of such disposition. "Market discount" with respect to the
Exchange Debentures will be the amount, if any, by which the "revised issue
price" of an Exchange Debenture (or its stated redemption price at maturity if
the Exchange Debenture has no OID) exceeds the holder's basis in the Exchange
Debenture immediately after such holder's acquisition, subject to a de minimis
exception. The "revised issue price" of an Exchange Debenture is its issue
price increased by the portion of OID previously
 
                                      105
<PAGE>
 
includible in the gross income of prior holders for periods prior to the
acquisition of the Exchange Debenture by the holder (without regard to any
acquisition premium exclusion) and reduced by prior payments other than
payments of qualified stated interest.
 
  A holder who acquires an Exchange Debenture at a market discount also may be
required to defer a portion of any interest expense that otherwise may be
deductible on any indebtedness incurred or maintained to purchase or carry
such Exchange Debenture until the holder disposes of the Exchange Debenture in
a taxable transaction. Moreover, to the extent of any accrued market discount
on such Exchange Debenture, any partial principal payment with respect to the
Exchange Debenture will be includible as ordinary income upon receipt.
Similarly, to the extent of any accrued market discount on such Exchange
Debenture, otherwise unrecognized gain in the Exchange Debenture will be
includible as ordinary income upon disposition of such Exchange Debenture in
certain otherwise non-taxable transfers (such as gifts).
 
  A holder of Exchange Debentures acquired at a market discount may elect for
federal income tax purposes to include market discount in gross income as the
discount accrues, either on a straight-line basis or on a constant interest
rate basis. This current inclusion election, once made, applies to all market
discount obligations acquired on or after the first day of the first taxable
year to which the election applies, and may not be revoked without the consent
of the IRS. If a holder of Exchange Debentures makes such an election, the
foregoing rules with respect to the recognition of ordinary income on sales
and other dispositions of such debt instruments, and with respect to the
deferral of interest deductions on indebtedness incurred or maintained to
purchase or carry such debt instruments, would not apply.
 
REDEMPTION OR SALE OF EXCHANGE DEBENTURES
 
  Generally, any redemption or sale of Exchange Debentures by a holder would
result in taxable gain or loss equal to the difference between the sum of the
amount of cash and the fair market value of other property received (except to
the extent attributable to accrued, but previously untaxed, interest, which
portion of the consideration would be taxed as ordinary income) and the
holder's adjusted tax basis in the Exchange Debentures. The adjusted tax basis
of a holder who receives an Exchange Debenture in exchange for New Preferred
Stock will generally be equal to the issue price of the Exchange Debenture
increased by any OID with respect to the Exchange Debenture included in the
holder's income prior to sale or redemption of the Exchange Debenture, reduced
by any amortizable bond premium applied against the holder's income prior to
sale or redemption of the Exchange Debenture and by payments other than
payments of qualified stated interest. Except to the extent that an intention
to call the Exchange Debentures prior to their maturity existed at the time of
their original issue in the form of an agreement or understanding between
American and the original holders of a substantial amount of the Exchange
Debentures (which is unlikely in the view of American, but nevertheless the
IRS might take this position under the theory that the optional redemption and
the change of control redemption in respect of the Exchange Debentures
manifests such an intention), and subject to the above discussion of market
discount, such gain or loss would be capital gain or loss and would be long-
term capital gain or loss if the holder's holding period for the Exchange
Debentures exceeded one year.
 
APPLICABLE HIGH YIELD DISCOUNT OBLIGATIONS CONSEQUENCES
 
  Pursuant to section 163 of the Code and in the event that the Exchange
Debentures are "applicable high yield discount obligations" ("AHYDOs"), a
portion of the OID (if any) accruing on the Exchange Debentures may be treated
as a dividend generally eligible for the dividends-received deduction in the
case of corporate holders, and American would not be entitled to deduct the
"disqualified portion" of the OID accruing on the Exchange Debentures and
would be allowed to deduct the remainder of the OID only when paid in cash.
 
  The Exchange Debentures will constitute AHYDOs if they (i) have a term of
more than five years, (ii) have a yield to maturity equal to or greater than
the sum of the applicable federal rate at the time of issuance of the Exchange
Debentures (the "AFR") plus five percentage points, and (iii) have
"significant OID". A debt
 
                                      106
<PAGE>
 
instrument is treated as having "significant OID" if the aggregate amount that
would be includible in gross income with respect to such debt instrument for
periods before the close of any accrual period ending after the date five
years after the date of issue exceeds the sum of (i) the aggregate amount of
interest to be paid in cash under the debt instrument before the close of such
accrual period, and (ii) the product of the initial issue price of such debt
instrument and its yield to maturity. Because the amount of OID, if any,
attributable to the Exchange Debentures will be determined at the time such
Exchange Debentures are issued and the AFR at that point in time is not
predictable, it is impossible currently to determine whether the Exchange
Debentures will be treated as AHYDOs.
 
  If an Exchange Debenture is treated as an AHYDO, a corporate holder would be
treated as receiving dividend income to the extent of the lesser of (i)
American's current and accumulated earnings and profits, and (ii) the
"disqualified portion" of the OID of such AHYDO. The "disqualified portion" of
the OID is defined in section 163(e)(5)(C) of the Code as the lesser of (i)
the amount of OID, and (ii) the portion of the "total return" (i.e., the
excess of all payments to be made with respect to the Exchange Debenture over
its issue price) bearing the same ratio to such total return as the Exchange
Debenture's yield to maturity, less the sum of the AFR plus six percentage
points, bears to such yield to maturity.
 
BACKUP WITHHOLDING
 
  A holder of New Preferred Stock or Exchange Debentures may be subject to
backup withholding at the rate of 31 percent with respect to dividends on the
New Preferred Stock, interest on the Exchange Debentures or sales proceeds
with respect to the New Preferred Stock or the Exchange Debentures, unless
generally such holder (a) is a corporation or comes within certain other
exempt categories and, when required, demonstrates its exemption, or (b)
provides a correct taxpayer identification number, certifies as to no loss of
exemption from backup withholding and otherwise complies with applicable
requirements of the backup withholding rules. A holder of New Preferred Stock
or Exchange Debentures who does not provide American with the holder's correct
taxpayer identification number may be subject to penalties imposed by the IRS.
Any amount paid as backup withholding would be creditable against the holder's
federal income tax liability.
 
  THE FOREGOING DISCUSSION OF CERTAIN FEDERAL INCOME TAX CONSIDERATIONS DOES
NOT CONSIDER THE FACTS AND CIRCUMSTANCES OF ANY PARTICULAR PROSPECTIVE
HOLDER'S SITUATION OR STATUS, AND ACCORDINGLY DOES NOT CONSTITUTE TAX ADVICE.
EACH HOLDER OF NEW PREFERRED STOCK OR EXCHANGE DEBENTURES SHOULD CONSULT ITS
OWN TAX ADVISOR WITH RESPECT TO THE TAX CONSEQUENCES TO IT, INCLUDING THOSE
UNDER STATE, LOCAL, FOREIGN AND OTHER TAX LAWS, AND UNDER ANY RECENT OR
PROPOSED CHANGES IN APPLICABLE TAX LAWS.
 
                                      107
<PAGE>
 
                             PLAN OF DISTRIBUTION
 
  Each broker-dealer that receives New Preferred Stock for its own account
pursuant to the Exchange Offer must acknowledge that it will deliver a
prospectus in connection with any resale of such New Preferred Stock. This
Prospectus, as it may be amended or supplemented from time to time, may be
used by a broker-dealer in connection with resales of New Preferred Stock
received in exchange for Old Preferred Stock where such Old Preferred Stock
was acquired as a result of market-making activities or other trading
activities. American has agreed that, for a period of 180 days after the
Expiration Date, or such shorter period as will terminate when all Old
Preferred Stock acquired by broker-dealers for their own accounts as a result
of market making activities or other trading activities have been exchanged
for New Preferred Stock and resold by such broker-dealers, it will make this
Prospectus, as amended or supplemented, available to any broker-dealer for use
in connection with any such resale.
 
  American will not receive any proceeds from any sale of New Preferred Stock
by broker-dealers. New Preferred Stock received by broker-dealers for their
own account pursuant to the Exchange Offer may be sold from time to time in
one or more transactions in the over-the-counter market, in negotiated
transactions, through the writing of options on the New Preferred Stock or a
combination of such methods of resale, at market prices or negotiated prices.
Any such resale may be made directly to purchasers or to or through brokers or
dealers who may receive compensation in the form of commissions or concessions
from any such broker-dealer or the purchasers of any such New Preferred Stock.
Any broker-dealer that resells shares of New Preferred Stock that it received
for its own account pursuant to the Exchange Offer and any broker or dealer
that participates in a distribution of such New Preferred Stock may be deemed
to be an "underwriter" within the meaning of the Securities Act, and any
profit on any such resale of New Preferred Stock and any commissions or
concessions received by any such persons may be deemed to be underwriting
compensation under the Securities Act. The Letter of Transmittal states that
by acknowledging that it will deliver and by delivering a prospectus, a
broker-dealer will not be deemed to admit that it is an "underwriter" within
the meaning of the Securities Act.
 
  For a period of 180 days after the Expiration Date, American will promptly
send additional copies of this Prospectus and any amendment or supplement to
this Prospectus to any broker-dealer that requests such documents in the
Letter of Transmittal. American has agreed to pay all expenses incident to the
Exchange Offer (including the reasonable expenses of one counsel for the
holders of the Old Preferred Stock) other than commissions or concessions of
any brokers or dealers and will indemnify holders of the Old Preferred Stock
(including broker-dealers) against certain liabilities, including certain
liabilities under the Securities Act.
 
                                      108
<PAGE>
 
                             TRANSFER RESTRICTIONS
 
  Unless and until the Old Preferred Stock is exchanged for New Preferred
Stock, the Old Preferred Stock (and any Exchange Debentures issues in exchange
therefor) will, until the second anniversary of the date of original issuance
of the Old Preferred Stock (or such shorter period as may be permitted by Rule
144(k)), unless otherwise agreed by American and the holder thereof, bear a
legend substantially to the following effect:
 
    "This security (or its predecessor) was originally issued in a
  transaction exempt from registration under the United States Securities Act
  of 1933 (the "Securities Act"), and this security and any security into
  which such security is exchangeable may not be offered, sold or otherwise
  transferred in the absence of such registration or an applicable exemption
  therefrom. Each purchaser of this security is hereby notified that the
  seller of this security may be relying on the exemption from the provisions
  of Section 5 of the Securities Act provided by Rule 144A thereunder.
 
    "The holder of this security agrees for the benefit of American that (A)
  this security and any security into which such security is exchangeable may
  be offered, resold, pledged or otherwise transferred, only (i) inside the
  United States to a person whom the seller reasonably believes is a
  qualified institutional buyer (as defined in Rule 144A under the Securities
  Act) in a transaction meeting the requirements of Rule 144A, (ii) outside
  the United States in a transaction in accordance with Rule 904 under the
  Securities Act, (iii) pursuant to an exemption from registration under the
  Securities Act provided by Rule 144 thereunder (if available) or (iv)
  pursuant to an effective registration statement under the Securities Act,
  in each of cases (i) through (iv) in accordance with any applicable
  securities laws of any State of the United States, and (B) the holder will,
  and each subsequent holder is required to, notify any purchaser of this
  security from it of the resale restrictions referred to in (A) above."
 
                                 LEGAL MATTERS
 
  The validity of the New Preferred Stock and the Exchange Debentures will be
passed upon for American by Sullivan & Worcester LLP, Boston, Massachusetts.
Norman A. Bikales, a member of the firm of Sullivan & Worcester LLP, is the
owner of 9,000 shares of Class A Common Stock and 41,900 shares of Class B
Common Stock of American.
 
                                    EXPERTS
 
  The following financial statements incorporated in this Prospectus by
reference have been audited by Deloitte & Touche LLP, independent auditors, as
stated in their reports, which are incorporated by reference herein, and have
been so incorporated in reliance upon the reports of such firm given upon
their authority as experts in accounting and auditing:
 
    (1) The consolidated financial statements of the Company as of December
  31, 1995 and 1996 and for each of the three years in the period ended
  December 31, 1996 and the related financial statement schedule
  (incorporated by reference from the Company's Annual Report on Form 10-K
  for the year ended December 31, 1996);
 
    (2) The consolidated financial statements of BayCom Partners, L.P. (a
  limited partnership) and consolidated entities as of December 31, 1994 and
  1995 and for each of the three years in the period ended December 31, 1995
  (incorporated by reference from the Company's Current Report on Form 8-K/A
  dated September 16, 1996);
 
    (3) The statement of assets of The Ten Eighty Corporation to be sold to
  American Radio Systems, Inc. as of December 31, 1995, and the related
  statements of income and of cash flows derived from those assets for the
  year then ended (incorporated by reference from the Company's Current
  Report on Form 8-K/A dated October 2, 1996); and
 
                                      109
<PAGE>
 
    (4) The consolidated financial statements of EZ Communications, Inc. and
  subsidiary as of December 31, 1996 and for the year then ended and the
  related financial statement schedule (incorporated by reference from EZ
  Communications, Inc.'s Annual Report on Form 10-K for the year ended
  December 31, 1996).
 
  The consolidated financial statements of Henry Broadcasting Company as of
December 31, 1994 and 1995 and for each of the three years in the period ended
December 31, 1995 incorporated by reference in this Prospectus to American's
report on Form 8-K/A dated September 16, 1996 have been audited by Miller,
Kaplan, Arase & Co., independent auditors, as stated in their report
incorporated by reference in this Prospectus and have been so included in
reliance upon the report of such firm given upon their authority as experts in
accounting and auditing.
 
  The combined financial statements of CBC of Baltimore, Inc. (d/b/a WOCT-FM)
and WWMX-FM, Inc. (wholly-owned subsidiaries of Capitol Broadcasting Company,
Inc.) as of December 31, 1995 and 1996 and for the years then ended,
incorporated in this Prospectus by reference to American's Current Report on
Form 8-K/A (Amendment No. 1) dated April 17, 1997, have been so incorporated
in reliance on the report of Price Waterhouse LLP, independent accountants,
given on their authority as experts in auditing and accounting.
 
  The consolidated financial statements of EZ Communications, Inc. as of
December 31, 1995 and for each of the two years in the period ended December
31, 1995 incorporated by reference in this Prospectus from EZ Communications,
Inc.'s Annual Report on Form 10-K for the year ended December 31, 1996 have
been audited by Ernst & Young LLP, independent auditors, as stated in their
report incorporated by reference in this Prospectus and have been so included
in reliance upon the report of such firm given upon their authority as experts
in accounting and auditing.
 
                                      110
<PAGE>
 
 
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                                CORE PRINCIPLES
 
 
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                          EARN OUR LISTENERS' LOYALTY
 
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<PAGE>
 
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NO DEALER, SALESPERSON OR OTHER PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFOR-
MATION OR TO MAKE ANY REPRESENTATION NOT CONTAINED IN THIS PROSPECTUS AND, IF
GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATION MUST NOT BE RELIED UPON AS
HAVING BEEN AUTHORIZED BY AMERICAN. THIS PROSPECTUS DOES NOT CONSTITUTE AN OF-
FER TO SELL OR A SOLICITATION OF AN OFFER TO BUY ANY OF THE SECURITIES OFFERED
HEREBY IN ANY JURISDICTION TO ANY PERSON TO WHOM IT IS UNLAWFUL TO MAKE SUCH
OFFER IN SUCH JURISDICTION. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY
SALE MADE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION
THAT THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO
THE DATE HEREOF OR THAT THERE HAS BEEN NO CHANGE IN THE AFFAIRS OF AMERICAN
SINCE SUCH DATE.
 
                                 ------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                          PAGE
                                                                          ----
<S>                                                                       <C>
Available Information....................................................   i
Incorporation of Certain Documents by Reference..........................   i
Summary..................................................................   1
Risk Factors.............................................................  14
The Exchange Offer.......................................................  21
Use of Proceeds..........................................................  28
Capitalization...........................................................  29
Unaudited Pro Forma Condensed Consolidated Financial Statements of
 American................................................................  30
Business.................................................................  36
Management...............................................................  58
Description of the New Preferred Stock...................................  59
Description of the Exchange Debentures...................................  67
Indebtedness of American.................................................  91
Description of Capital Stock.............................................  94
Certain Federal Income Tax Consequences..................................  98
Plan of Distribution..................................................... 108
Transfer Restrictions.................................................... 109
Legal Matters............................................................ 109
Experts.................................................................. 109
</TABLE>
 
 
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                                     LOGO
 
                               3,600,000 SHARES
 
           11 3/8% CUMULATIVE EXCHANGEABLE PREFERRED STOCK, SERIES B
 
                                  PROSPECTUS
 
 
 
 
 
 
 
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