AMERICAN TECHNOLOGY CORP /DE/
S-3, 1997-09-19
RADIO & TV BROADCASTING & COMMUNICATIONS EQUIPMENT
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<PAGE>   1
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM S-3
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                          ----------------------------

                         AMERICAN TECHNOLOGY CORPORATION
             (Exact name of registrant as specified in its charter)

                                    DELAWARE
         (State or other Jurisdiction of incorporation or organization)

                                   87-0361799
                     (I.R.S. Employer Identification Number)

                         13114 EVENING CREEK DRIVE SOUTH
                           SAN DIEGO, CALIFORNIA 92128
                                 (619) 679-2114
          (Address, including zip code, and telephone number, including
             area code, of registrant's principal executive offices)
                                 ---------------

                          ROBERT PUTNAM, VICE PRESIDENT
                         AMERICAN TECHNOLOGY CORPORATION
                         13114 EVENING CREEK DRIVE SOUTH
                           SAN DIEGO, CALIFORNIA 92128
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)

                                  with copy to:
                            JOHN D. BRASHER JR., ESQ.
                       BRASHER & COMPANY, ATTORNEYS AT LAW
              90 MADISON STREET, SUITE 707, DENVER, COLORADO 80206
                                ----------------
          Approximate date of commencement of proposed sale to public:
   AS SOON AS PRACTICABLE AFTER THE REGISTRATION STATEMENT BECOMES EFFECTIVE.

If the only securities being registered on this Form are being offered pursuant
to dividend or interest reinvestment plans, please check the following box. [ ]

If any of the securities being registered on this Form are to be offered on a
delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, please check the following box. [X]

If this Form is filed to register additional securities for an offering pursuant
to Rule 462(b) under the Securities Act, please check the following box and list
the Securities Act registration statement number of the earlier effective
registration statement for the same offering. [ ]

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under
the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [ ]

If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]


<PAGE>   2

                             ---------------------

                         CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>
============================================================================================================
Title of Each Class of   Amount to be        Proposed maximum          Proposed maximum         Amount of
   Securities to be       Registered    offering price per unit   aggregate offering price  registration fee
    Registered (1)           (2)                   (3)                        (3)                  (3)
- ------------------------------------------------------------------------------------------------------------
<S>                      <C>            <C>                       <C>                       <C>
Common Stock, par value,
 $.00001 per share         1,629,899              $5.36                   $8,736,259            $2,647.36
============================================================================================================
</TABLE>

(1) This registration statement covers the resale by selling shareholders of (i)
1,454,899 shares of Common Stock that may be acquired by selling security
holders upon the conversion of Series A Convertible Preferred Stock ("Preferred
Stock") and (ii) 175,000 shares of Common Stock that may be acquired by selling
security holders upon the exercise of warrants described herein granted to the
selling security holders.

(2) There are also being registered, pursuant to Rule 416 under the Securities
Act of 1933, as amended, such indeterminate number of additional shares of the
Company's Common Stock as may be issuable upon conversion of the Preferred Stock
or upon exercise of the warrants by reason of the operation of the provisions of
the Preferred Stock and the warrants described herein to prevent dilution
resulting from stock splits, stock dividends and similar transactions. This
Registration Statement relates to resales and reoffers of shares of the
Company's Common Stock to be purchased by holders of the Preferred Stock and
warrants described herein.

(3) Pursuant to Rule 457(g)(3) the registration fee is calculated pursuant to
Rule 457(c), computed based upon the average of the bid and asked prices of the
Company's Common Stock as reported on NASD's Electronic OTC Bulletin Board, on
September 18, 1997, which price is used solely for the purpose of calculating
the registration fee.


THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR DATES
AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL FILE
A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION STATEMENT
SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF THE
SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(A),
MAY DETERMINE.

================================================================================

                                       ii
<PAGE>   3
                 SUBJECT TO COMPLETION; DATED ____________, 1997


                                   PROSPECTUS

                         AMERICAN TECHNOLOGY CORPORATION

                           FOR UP TO 1,629,899 SHARES

                                  COMMON STOCK


The shares of common stock, par value $.00001 (the "Common Stock"), of American
Technology Corporation (the "Company") offered hereby represent shares issuable
from time to time upon the conversion of 350,000 shares of Series A Convertible
Preferred Stock (the "Preferred Stock") and the exercise of Common Stock
Purchase Warrants to purchase up to 175,000 shares of Common Stock (the
"Warrants", which Preferred Stock and Warrants may be referred to herein
collectively as the "Convertible Securities"). Although the Company will not
receive any of the proceeds from the sale of the shares of Common Stock offered
hereby, the Company has received gross proceeds of $3,500,000 pursuant to the
sale of 350,000 shares of the Preferred Stock at $10.00 per preferred share, an
indeterminate amount of which may be retired upon the conversion of the
Preferred Stock into shares of Common Stock of the Company. The Company may
receive aggregate funds not exceeding $1,312,500.00 upon the exercise of
Warrants at an exercise price of $7.50 per share of Common Stock. See "Selling
Security Holders."

The number of shares of Common Stock issuable upon conversion of each share of
the 350,000 shares of Preferred Stock is determined by dividing $10.00, plus an
amount accruing at $0.60 per annum, by 85% of the average of the closing bid
prices of the Company's Common Stock each day for the five trading days
immediately preceding the date of conversion provided that in no event shall
such amount to be multiplied by 85% be less than $3.00 per share or greater than
$5.75 per share. The number of shares into which the 350,000 shares of Preferred
Stock can be converted at the minimum conversion price of $2.55 is 1,372,549.
The Company may force conversion of the Preferred Stock if the closing bid price
of the Common Stock equals or exceeds $14.00 per share for ten consecutive
trading days and certain other conditions are met. The aforementioned number of
shares would be increased by certain adjustments including the $0.60 per share
of Preferred Stock per annum amount. For purposes of determining the initial
number of shares of Common Stock to be registered on this Registration
Statement, the Company has computed the maximum number of shares issuable upon
conversion of the Preferred Stock by adding $0.60 per share for one year (the
mandatory conversion date of August 25, 1998, subject to certain conditions) to
the $10.00 per share purchase price and dividing by the minimum conversion price
of $2.55 per share and multiplying by the number of shares of Preferred Stock
held by each Selling Security Holder, for a total of 1,454,899 shares. The
actual number of shares issuable on conversion may be less. This Registration
Statement and Prospectus also relates to such presently indeterminate number of
additional shares of Common Stock as may be issuable upon conversion of the
Preferred Stock, based upon fluctuations in the conversion price of the
Preferred Stock in accordance with Rule 416 under the Securities Act of 1933, as
amended (the "Securities Act"). The Preferred Stock, the Warrants and the shares
of Common Stock issuable upon conversion or exercise thereof have been and will
be issued in transactions exempt from the registration requirements of the
Securities Act. See "Selling Security Holders" and "Plan of Distribution".

The shares of Common Stock registered for resale hereby have been registered
pursuant to the Company's obligations contained in written agreements with the
Selling Security Holders. The Selling Security Holders may elect to sell all, a
portion or none of the Common Stock offered by them hereunder which is only
obtainable through the conversion of all or portion of the Preferred Shares or
exercise of all or a portion of the Warrants.

The shares of Common Stock offered hereby may be sold from time to time by
Selling Security Holders referred to herein under the caption "Selling Security
Holders" or by pledgees, donees, transferees or other successors in interest
that receive such shares as a gift, partnership distribution or other non-sale
related transfer. Such sales may be made through underwriters, dealers, agents,
or directly to one or more purchasers in fixed price offerings, in negotiated
transactions, at market prices prevailing at the time of sale or at prices
related to such market prices or at negotiated prices. The Company has agreed to
pay certain expenses of registering the shares of Common Stock offered hereby,
including filing fees, legal, 



<PAGE>   4

accounting and miscellaneous expenses in connection with registration. All
selling and other expenses incurred by the Selling Security Holders will be
borne by them. See "Plan of Distribution."

The shares of Common Stock offered hereby have not been registered under the
blue sky or securities laws of any jurisdiction, and any broker or dealer should
assure itself of the existence of an exemption from registration or effect of
such registration in connection with the offer and sale of such shares.

The Common Stock is traded under the symbol "ATCO" in the over-the-counter
market on the "OTC Electronic Bulletin Board" operated by the National
Association of Securities Dealers, Inc. (the "OTC Bulletin Board"). On September
18, 1997 the closing "bid" price was $5.3125. The price and trading volume of
the Company's Common Stock has been volatile. See "Risk Factors."

THE COMMON STOCK OFFERED HEREBY IS SPECULATIVE AND INVOLVES A HIGH DEGREE OF
RISK AND SHOULD BE CONSIDERED ONLY BY PERSONS WHO CAN AFFORD THE LOSS OF THEIR
ENTIRE INVESTMENT. THE COMPANY HAS A HISTORY OF OPERATING LOSSES AND BASED ON
THE CURRENT LEVEL OF EXPENDITURES AND ANTICIPATED ADDITIONAL EXPENDITURES, THE
COMPANY DOES NOT HAVE SUFFICIENT FUNDS FOR THE NEXT TWELVE MONTHS.
SEE "RISK FACTORS" WHICH BEGINS ON PAGE 6.

Each Selling Security Holder and any broker executing selling orders on behalf
of the Selling Security Holder may be deemed to be an underwriter within the
meaning of the Securities Act. Commissions or other compensation received by any
such broker may be deemed to be underwriting compensation under the Securities
Act.

THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE 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 September ___, 1997.





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<PAGE>   5

NO PERSON IS AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY REPRESENTATIONS,
OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, IN CONNECTION WITH THE OFFERING
DESCRIBED HEREIN, AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATIONS
MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY THE COMPANY OR ANY SELLING
SECURITY HOLDER. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL, OR A
SOLICITATION OF AN OFFER TO BUY, NOR SHALL THERE BE ANY SALE OF THESE SECURITIES
BY ANY PERSON IN ANY JURISDICTION IN WHICH IT IS UNLAWFUL FOR SUCH PERSON TO
MAKE SUCH OFFER, SOLICITATION OR SALE. NEITHER THE DELIVERY OF THIS PROSPECTUS
NOR ANY SALE MADE HEREUNDER SHALL UNDER ANY CIRCUMSTANCES CREATE AN IMPLICATION
THAT THE INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO
THE DATE HEREOF.

                              AVAILABLE INFORMATION

The Company has filed with the Securities and Exchange Commission (the
"Commission") in Washington, D.C., a Registration Statement on Form S-3 under
the Securities Act with respect to the Common Stock offered by this Prospectus.
Certain portions of the Registration Statement have not been included in this
Prospectus. For further information, reference is made to the Registration
Statement and the exhibits thereto. Statements in this Prospectus as to the
contents of exhibits are not necessarily complete, and each statement is
qualified in all respects by reference to the copies of documents filed or
incorporated by reference as exhibits to the Registration Statement or otherwise
filed with the Commission. See also "Incorporation of Certain Documents by
Reference."

The Company is subject to the informational requirements of the Exchange Act,
and in accordance therewith files reports, proxy statements and other
information with the Commission. The Registration Statement (with exhibits), as
well as such reports, proxy statements and other information, can be inspected
and copied at the public reference facilities maintained by the Commission at
its principal offices at Judiciary Plaza, 450 Fifth Street, NW, Washington, D.C.
20549, and its regional offices at Northwestern Atrium Center, 500 West Madison
Street, Suite 1400, Chicago, Illinois 60601 and 7 World Trade Center, 13th
Floor, New York, New York 10048. Copies of such material can be obtained at
prescribed rates from the Public Reference Section of the Commission at its
principal office at Judiciary Plaza, 450 Fifth Street, NW, Room 1024,
Washington, D.C. 20549. The Commission maintains a web site (http://www.sec.gov)
that contains reports, proxy, and information statements and other information
regarding registrants, such as the Company, that file electronically with the
Commission.

                 INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

The following documents have been previously filed by the Company (file no.
0-24248) with the Commission are incorporated herein by reference:

        (1) The Company's Annual Report on Form 10-KSB for the fiscal year ended
        September 30, 1996, filed on December 13, 1996.

        (2) The Company's Quarterly Report on Form 10-QSB for the fiscal quarter
        ended December 31, 1996, filed on February 6, 1997.

        (3) The Company's Quarterly Report on Form 10-QSB for the fiscal quarter
        ended March 31, 1997, filed on May 13, 1997.

        (4) The Company's Quarterly Report on Form 10-QSB for the fiscal quarter
        ended June 30, 1997, filed on August 12, 1997.

        (5) The Company's Proxy Statement in connection with the Annual Meeting
        of Stockholders held March 25, 1997, filed on February 20, 1997.

        (6) Current Report on Form 8-K, filed on April 1, 1997.

        (7) Current Report on Form 8-K, filed on August 29, 1997.



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<PAGE>   6

        (8) Current Report on Form 8-K/A, Amendment No. 1, filed on September
        18, 1997.

        (9) The description of the Company's Common Stock contained in
        registration statement on Form 10-SB, Item 11, of the Company, SEC file
        No. 0-24248, and as amended by the Company's Amended Certificate of
        Incorporation.

All documents filed by the Company pursuant to Sections 13(a),13(c), 14 and
15(d) of the Exchange Act after the date of this Prospectus and before the
termination of the offering covered hereby will be deemed to be incorporated by
reference in this Prospectus and to be a part hereof from the date of filing of
such documents. Any statement contained in a document incorporated or deemed to
be incorporated by reference in this Prospectus shall be deemed to be modified
or superseded for purposes of this Prospectus to the extent that a statement
contained in this Prospectus or in any other subsequently filed document which
also is or is deemed to be incorporated by reference modifies or replaces such
statement.

The Company will provide without charge to each person to whom this Prospectus
is delivered, upon the written or oral request of such person, a copy of any or
all of the documents incorporated by reference in this Prospectus, other than
exhibits to such documents, unless such exhibits are specifically incorporated
by reference into the information that this Prospectus incorporates. In
addition, a copy of the Company's most recent annual report to stockholders will
be promptly furnished, without charge, upon written or oral request. All such
requests should be directed to American Technology Corporation, 13114 Evening
Creek Drive South, San Diego, California 92128, telephone number (619) 679-2114,
attention Mr. Robert Putnam, Vice President.

                 DISCLOSURE REGARDING FORWARD-LOOKING STATEMENTS

This Prospectus, including all documents incorporated by reference, includes
"forward-looking" statements" within the meaning of Section 27A of the
Securities Act and Section 12E of the Exchange Act. In addition to historical
information, this Prospectus contains forward-looking statements within the
meaning of the private securities litigation reform act of 1995 and the Company
desires to take advantage of the "safe harbor" provisions thereof. Therefore the
Company is including this statement for the express purpose of availing itself
of the protections of such safe harbor with respect to all of such
forward-looking statements. The forward-looking statements in this Prospectus
reflect the company's current views with respect to future events and financial
performance. These forward-looking statements are subject to certain risks and
uncertainties, including those discussed herein, that could cause actual results
to differ materially from historical results or those anticipated. In this
report, the words "anticipates," "believes," "expects," "intends," "future" and
similar expressions identify forward-looking statements. Readers are cautioned
to consider the specific risk factors described herein and in "Risk Factors",
and not to place undue reliance on the forward-looking statements contained
herein, which speak only as of the date hereof. The Company undertakes no
obligation to publicly revise these forward-looking statements to reflect events
or circumstances that may arise after the date hereof. All subsequent written
and oral forward-looking statements attributable to the Company or persons
acting on its behalf are expressly qualified in their entirety by this section.

                                   THE COMPANY

BACKGROUND
American Technology Corporation ("Company") was incorporated in the State of
Utah on February 11, 1980 as Chasko, Inc. and on April 7, 1982 its name was
changed to American Technology Corporation. On June 19, 1992 the Company
redomiciled from the State of Utah to the State of Delaware. On July 14, 1992,
the Company completed a 1-for-5 reverse stock split resulting in 7,291,228
common shares, par value $.00001, being issued and outstanding after the reverse
split.

From its inception in 1980 to 1984 the Company was primarily engaged in the
development of a patented 2-speed long play cassette recorder ("X-TEN(R)"). On
September 30, 1984, the Company acquired 100% of the outstanding shares of
Norcom Electronics Corporation which was engaged in development of patented
ear-radio and ear-microphone technology. Both technologies feature small
electronics for placement in or around the entrance to the ear canal to perform
desired functions. From 1984 through 1987, the Company was engaged in various
licensing and development activities with respect to the X-TEN, ear-radio and
ear-microphone technology.

In March, 1988 the Company assigned certain ear-microphone technology to Norris
Communications, Inc. ("NCI") in return for 700,000 shares of NCI common stock
and a 1% royalty on gross sales resulting from the exploitation of certain



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products using the ear-microphone technology ("EarPHONE"). The Company retained
its ear-radio technology. The ear-microphone technology was subsequently sold by
NCI to Jabra Corporation which is commercializing the EarPHONE for cellular
phone, computer, multi-media and other customers. (See "Certain Relationships
and Related Transactions").

From 1988 to early 1992 the Company was inactive due to inadequate financial
resources. In early 1992 the Company was brought into good standing and
restructured to take advantage of new financing opportunities designed to allow
the Company to pursue development of its products and technologies. There were
no changes to management resulting from this reactivation.

Since the 1992 restructuring, Company operations have focused on developing its
various technology assets. The Company's address is 13114 Evening Creek Drive
South, San Diego, California, and its telephone number is 619-679-2114. Its
Internet site is located at WWW.ATCSD.COM.

CURRENT BUSINESS
The Company is engaged in the development, manufacturing and marketing of
consumer electronic products and electronic technologies. The Company's
ear-radio technology was commercialized through the 1993 introduction of the FM
ear-radio and the 1995 introduction of the AM ear-radio. During fiscal 1996 and
to date in fiscal 1997 substantially all of the Company's revenues resulted from
the manufacturing and marketing of its "FM Sounds" FM digital scanning ear-radio
and its "AM Sounds" AM ear-radio. The Company seeks to expand its ear-radio
distribution while developing additional technology assets.

Management anticipates that its HyperSonic Sound (HSS) reproduction technology,
currently in development, will become its primary business focus. HyperSonic
Sound is a new method of sound reproduction -- sound is generated in the air
using ultrasonic frequencies, those above the normal range of hearing. A
patent-pending process creates an ultrasonic wave that interacts in mid-air to
produce wide spectrum audio. Since traditional loudspeaker system elements such
as voice coils, magnets, cones/diaphragms, crossover networks, baffles and
speaker enclosures are eliminated, management believes HSS technology offers
higher quality sound with less distortion while using less power, space, and
weight and at a lower cost. The sound produced by the HSS technology is also
significantly more directional over greater distances than traditional sound
reproduction methods thereby offering a number of application advantages to
users. There can be no assurance the Company can successfully commercialize the
HSS technology (see "Risk Factors").

The Company's HSS technology was invented by Elwood G. Norris, Chief Technology
Officer and a director of the Company, who manages the Company's research and
technical activities and who has invented the Company's products and
technologies. The Company has additional products and technologies in various
stages of development with related pending patents including portable Global
Positioning System ("GPS") technology and a noise reduction system for jet
engines. However, substantially all product and market development efforts are
focused on the HSS technology and there can be no assurance additional
technologies can be proven or commercialized.

The Company acquired the basic concepts for the HSS technology (previously
called the Sonic Generator technology) from Mr. Norris in 1992. During fiscal
1996 and fiscal 1997 to date, the Company has devoted a significant portion of
its research and development activities on HSS technology. In July 1996 the
Company produced a laboratory proof-of-concept demonstration capable of
producing sound in the air using ultrasonics. In October 1996 the Company
produced a second generation portable demonstration system with improved
electronics. The portable system consists of a standard CD player, an
off-the-shelf amplifier modified by the Company, custom electronics and modified
commercial ultrasonic emitters. To date in 1997 research efforts have focused on
development of improved electronics and custom ultrasonic emitters which
management believes will be required to produce a commercially viable system.

The Company continues to improve its proprietary electronics and is working with
multiple producers of ultrasonic devices to develop custom emitters to the
Company's specifications. The Company believes, but there can be no assurance,
that it can have commercially acceptable designs and sources of materials for
use by licensees by the end of calendar 1997.

CERTAIN RECENT DEVELOPMENTS
On May 31, 1997 the inventor of the HSS technology, Elwood G. Norris, was
awarded the 1997 Discover Magazine Award for Technical Innovation in the Sound
category for the Company's HSS technology. Winners in a total of eight
categories were selected from over 4,000 entries. The annual awards are designed
to recognize and promote new technological innovations and the winners are
selected by an expert panel of judges. Winners were also featured in the July
issue of 


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<PAGE>   8

Discovery magazine. This award and recognition have provided broad marketing
exposure for the HSS technology to prospective users. HSS technology has also
been featured in over 30 journal articles providing additional marketing
exposure.

The Company's marketing of the HSS technology continues to evolve as a result of
this awareness, technical developments, changes in patent and protection
strategies and reactions from prospective users of the technology. Rather than
broadly licensing large market segments or industries, the Company is focusing
its efforts on original equipment manufacturers ("OEMs") desiring to implement
the HSS technology in specific products. The Company's strategy is to establish
business relationships with leading participants in various segments of the
electronics and sound reproduction markets. The Company believes this strategy
will enable it to take advantage of the superior financial resources,
technological capabilities, proprietary positions and market presence of these
companies in establishing and maintaining HSS technology in sound reproduction.

In accordance with the above strategy, the Company has received non-binding
expressions of interest from more than twenty companies for a broad range of
product applications. The Company's initial strategy is to focus its efforts on
the computer (personal and portable), communication, and home audio and video
markets. The Company recently demonstrated the application of HSS technology in
a personal computer in connection with a prospective major customer to
demonstrate the advantages of directed sound, small size and high sound quality.
The Company intends to establish closer relationships with selected companies
through specific product collaborations, but there can be no assurance that the
HSS technology can be developed to commercialization for such uses or that the
Company can successfully collaborate to develop commercial products to exploit
the HSS technology. The Company anticipates that product license or component
supply relationships (incorporating licensing) will develop as individual
products are jointly designed and developed with product partners in the future.

The Company continues to devote significant resources on preparing and filing
patent applications related to various aspects of the HSS technology. A total of
eleven HSS technology patents have been filed and others are in various stages
of preparation.

On March 25, 1997 the Company sold $1,000,000 of convertible notes and on August
25, 1997 the Company sold $3,500,000 of Preferred Stock (the subject of this
Registration Statement) in private placement transactions, such fundings being
employed to further the development of the HSS technology and provide working
capital.

On September 1, 1997 the Company appointed Dale Williams as Chairman, President
and Chief Executive Officer. In May, 1997 Mr. Williams was engaged as a
strategic planning and business development consultant for the HSS technology.
Since March 1995, Mr. Williams age 58, through his wholly-owned Spectrum
Technology Inc., has been advising technology companies on business acquisition
and market development strategies. From January 1990 to March 1995 he was
founder and Chief Executive Officer of Beacon Light Products Inc., a private
company manufacturing advanced electronic control products. He has held
executive positions with technology companies including Intel, Monolithic
Memories Inc. (Advanced Micro Devices) and Rockwell International. Mr. Williams
has an Electronics Engineering (E.E.) from California State University and MBA
from the University of Southern California. In connection with Mr. William's
appointment, Mr. Norris was appointed Chief Technology Officer and Mr. Robert
Putnam, formerly President and Chief Executive Officer, was appointed as Vice
President and Treasurer and resigned as a director.

                                  RISK FACTORS

The Common Stock offered hereby is speculative and involves a high degree of
risk and should be considered only by persons who can afford the loss of their
entire investment. In addition to the other information included elsewhere in
this Prospectus, prospective investors should give careful consideration to the
following factors before purchasing any shares of the Common Stock offered
hereby. This Prospectus includes forward-looking statements which include risks
and uncertainties. The Company's actual results could differ materially from
those anticipated as a result of a variety of factors, including those set forth
in the following risk factors and elsewhere in this Prospectus.

HISTORY OF LOSSES; ABSENCE OF PROFITABILITY; AND EXPECTATION OF FUTURE LOSSES
The Company has an accumulated deficit of $3,371,500 at June 30, 1997 with
increasing net losses of $1,345,563 for the nine months ended June 30, 1997,
$560,448 for fiscal 1996 and $368,201 for fiscal 1995. The Company expects to
incur additional operating losses in future quarters until and if it is able to
generate operating revenues and margins sufficient to 


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<PAGE>   9

support expenditures. There is no assurance that the Company will be able to
achieve or sustain significant periods of profitability in the future.

POSSIBLE NEED FOR ADDITIONAL FINANCING
The Company intends to meet its working capital needs from a portion of the
proceeds from the two private placements and option exercises completed in the
current fiscal year and from funds generated from operations. Although
management believes the Company will have sufficient funds to meet its working
capital needs for at least the next twelve months, the Company may be required
to seek additional financing sooner than currently anticipated or could be
required to curtail its activities. There can be no assurance that any
additional financing will be available to the Company on terms acceptable to the
Company, or at all.

FUTURE DEPENDENT ON MARKET ACCEPTANCE OF THE COMPANY'S HSS TECHNOLOGY
The future of the Company is largely dependent upon the success of the Company's
HSS technology or the development of new technologies. There can be no assurance
the Company can introduce any of its technologies or that if introduced they
will achieve market acceptance sufficient to sustain the Company or achieve
profitable operations. Because the HSS technology currently represents the
Company's primary technology focus, if the HSS technology is not successful, the
Company's business, financial condition and results of operations would be
materially and adversely affected.

HSS TECHNOLOGY IN DEVELOPMENT; NO ASSURANCE OF COMPLETION; MAY BE SUBJECT TO
DELAYS The Company's HSS technology is in development and has not been developed
to the point of commercialization. There can be no assurance that a commercially
viable system can be completed due to the inherent risks of new technology
development, limitations on financing, competition, obsolescence, loss of key
technical personnel and other factors. The Company has not generated any
revenues from its HSS technology to date, and has no agreements or arrangements
providing any assurance of revenues in the future. The Company's various
development projects are high risk in nature, where unanticipated technical
obstacles can arise at any time and result in lengthy and costly delays or
result in determination that further development is unfeasible. There can be no
assurance of timely completion of commercially viable HSS technology or that if
available that it will perform on a cost-effective basis, or if introduced, that
it will achieve market acceptance.

HSS TECHNOLOGY WILL FACE SIGNIFICANT COMPETITION AND POSSIBLE OBSOLESCENCE
Technological competition from other and longer established electronic and
loudspeaker manufacturers is significant and expected to increase. Most of the
companies with which the Company expects to compete have substantially greater
capital resources, research and development staffs, marketing and distribution
programs and facilities, and many of them have substantially greater experience
in the production and marketing of products. In addition, one or more of the
Company's competitors may succeed in developing technologies and products that
are more effective than any of those being developed by the Company, rendering
the Company's technology and products obsolete or noncompetitive.

NEW TECHNOLOGY FACES MANY BARRIERS AND RISKS
The introduction of new technology, such as the HSS technology, that is targeted
for wide use often faces barriers to commercialization and risks many that
cannot currently be identified. The HSS technology employs ultrasonics and
although ultrasonics are employed in a wide variety of medical and industrial
applications, there can be no assurance that the Company will not face barriers
to introduction due to the use of ultrasonics. The Company's technology uses
relatively small amounts of ultrasonic energy which dissipates rapidly in air.
The Company employs frequencies above those that may be harmful to pets but
within those used by medical devices directly coupled to the body to image
fetuses and the brain. Although the Company believes the frequencies and the
amount of energy employed is harmless, and that the emission of such frequencies
is not presently subject to government regulation, there can be no assurance
that barriers to commercialization will not develop or that the use of such
ultrasonics will not be subject to future regulation or interpretation of
existing regulation.

DEPENDENCE ON THIRD PARTY STRATEGIC ALLIANCES AND BUSINESS RELATIONSHIPS
The Company's strategy is to establish business relationships with leading
participants in various segments of the electronics and sound reproduction
markets. The Company believes this strategy will enable it to take advantage of
the superior financial resources, technological capabilities, proprietary
positions and market presence of these companies in establishing and maintaining
HSS technology in sound reproduction. Although the Company's strategy is to
establish closer relationships with selected companies through specific product
collaborations, there can be no assurance that the HSS 


                                       7
<PAGE>   10

technology can be developed to commercialization for such uses or that the
Company can successfully collaborate to develop commercial products to exploit
the HSS technology.

The Company's success will depend on its ability to enter into additional
strategic arrangements with new partners on commercially reasonable terms. Any
future relationships may require the Company to share control over its
development, manufacturing and marketing programs or to relinquish rights to
certain versions of its technology.

PRODUCTS IN DEVELOPMENT SUBJECT TO MANY RISKS
The markets for the Company's existing and future products and technologies are
characterized by rapidly changing technology, evolving industry standards,
frequent new product introductions and enhancements. The successful development
and commercialization of new products and technologies involve many risks,
including the correct and timely identification of new opportunities, the
successful completion of the developmental process, the retention and hiring of
appropriate research and development personnel, establishment of marketing and
distribution and other risks. The life cycle and demand for new products and
technologies is difficult to predict and is subject to the effects of
competition, technological change, price changes and other factors all of which
could have a material adverse effect on the Company's operations, business and
financial condition.

PRODUCT SALES SUBJECT TO SIGNIFICANT VARIABILITY; INSUFFICIENT TO SUPPORT
OPERATIONS The sales of the Company's existing ear-radio products are subject to
significant quarterly and seasonal variability. The Company has been in the past
and may, in the future, be reliant on a limited number of customers, the loss of
which could have an adverse effect on operating results. To date the Company's
sales have consisted almost entirely of ear-radio sales. The Company has been
unable to obtain sufficient volumes and margins to support operations and
management does not believe sufficient ear-radio product sales can be achieved
to achieve profitable operations at the current level of expenditures.
Accordingly, the Company will be reliant on revenues from new products or
technologies to achieve profitable operations. There can be no assurance the
Company can exploit new technologies.

EAR RADIO ASSEMBLY DEPENDENT ON SUBCONTRACTOR; POSSIBLE DISRUPTIONS IN
COMPONENTS With respect to the assembly of the Company's FM ear-radio which
accounts for substantially all of the Company's revenues, the Company is
dependent on a foreign subcontractor. The Company believes that there are a
number of electronic product subcontract assembly companies located in North
America and overseas that are qualified to produce the Company's ear-radio
should the existing supplier be unable or unwilling to do so, however any
disruption of supply could cause additional costs and delays and could have a
material adverse impact on the Company's results of operations. The assembly of
ear-radios is dependent upon the availability of electronic components. The
Company believes there are secondary suppliers of components and subassemblies
such that it is not reliant on one supplier, although delays could result should
the Company be required to change suppliers of longer lead time components or
subassemblies. Any significant delays in obtaining components from existing or
secondary suppliers through supplier changes or from component shortages, which
are common to the electronics industry, could have a material adverse impact on
the Company's results of operations.

PATENTS AND PROPRIETARY RIGHTS SUBJECT TO UNCERTAINTY
The Company has two U.S. patents on ear-radios which it relies on to protect its
technology position in the U.S. The Company has 11 patents pending on its HSS
technology, 2 pending on its GPS technology and one pending on its noise
reduction system for jet engines and the Company is considering additional
patent applications. There can be no assurance that any patents held by the
Company will not be challenged and invalidated, that patents will issue from any
of the Company's pending applications or that any claims allowed from existing
or pending patents will be of sufficient scope or strength or be issued in all
countries where the Company's products can be sold or licensed to provide
meaningful protection or any commercial advantage to the Company. Competitors of
the Company may also be able to design around the Company's patents. The
electronics industry is characterized by vigorous protection and pursuit of
intellectual property rights or positions, which have resulted in significant
and often protracted and expensive litigation. There is currently no pending
intellectual property litigation against the Company. There is no assurance
however, that the Company's technologies or products do not and will not
infringe the patents or proprietary rights of third parties. Problems with
patents or other rights could potentially increase the cost of the Company's
products, or delay or preclude new product development and commercialization by
the Company. If infringement claims against the Company are deemed valid, the
Company may seek licenses which might not be available on acceptable terms or at
all. Litigation could be costly and time-consuming but may be necessary to
protect the Company's future patent and/or technology license positions, or to
defend against infringement claims. A successful challenge to the Company's HSS
technology could have a materially adverse effect on the Company and its
business prospects. There can be no assurance that any application of the
Company's technologies will 




                                       8
<PAGE>   11

not infringe upon the proprietary rights of others or that licenses required by
the Company from others will be available on commercially reasonable terms, if
at all.

PERFORMANCE DEPENDENT ON KEY PERSONNEL; LIMITED KEY PERSON LIFE INSURANCE;
SUCCESS DEPENDENT ON ADDITIONAL PERSONNEL The Company's performance is
substantially dependent on the performance of its executive officers and key
technical employees. Given the Company's early stage of development, the Company
is dependent on its ability to retain and motivate high quality personnel,
especially its management and highly skilled technical personnel. Other than a
$2 million policy on Elwood G. Norris, Chief Technology Officer and inventor of
the Company's technologies, the Company does not have "key person" life
insurance policies on any other person. The loss of the services of Mr. Norris
could have a material adverse effect on the business, operating results or
financial condition of the Company. The Company's future success and growth also
depends on its continuing ability to identify, hire, train and retain other
highly qualified technical and managerial personnel. Competition for such
personnel is intense, and there can be no assurance that the Company will be
able to attract, assimilate or retain other highly qualified technical and
managerial personnel in the future. The inability to attract and retain the
necessary technical and managerial personnel could have a material adverse
effect upon the Company's business, operating results or financial condition.

MANAGEMENT OF GROWTH
Depending on the extent of its future growth, if any, the Company may experience
a significant strain on its management, operational and financial resources. The
Company's ability to manage its growth effectively may require it to continue to
implement and improve its operational and financial systems and may require the
addition of new management personnel. The failure of the Company's management
team to effectively manage growth, should it occur, could have a material
adverse impact on the Company's results of operations.

GENERAL CONFLICTS OF INTEREST DUE TO PART-TIME MANAGEMENT
Elwood G. Norris (a significant shareholder, Chief Technology Officer, Director
and inventor of the Company's technologies) and Robert Putnam (Vice President
and Treasurer) devote only part-time services to the Company and have other
employment and business interests to which they devote significant attention and
will continue to do so notwithstanding the fact that management time should be
devoted to the Company's business. Mr. Putnam devotes approximately 25-30 hours
per week and Mr. Norris devotes approximately 15-30 hours per week to the
Company. These management members generally expect to devote time to the Company
only on an as-needed basis over the next twelve months. Mr. Williams is a
full-time employee of the Company.

Certain conflicts of interest now exist and will continue to exist between the
Company and certain of its officers and directors due to the fact that they have
other employment or business interests to which they devote some attention. The
Company has not established policies or procedures for the resolution of current
or potential conflicts of interest between the Company and certain of its
management or management-affiliated entities. There can be no assurance that
members of management will resolve all conflicts of interest in the Company's
favor.

INDEMNIFICATION OF OFFICERS, DIRECTORS AND OTHERS
The Company's Certificate of Incorporation provides for the indemnification of
its officers, directors, employees and agents, under certain circumstances,
against attorney's fees and other expenses incurred by them and judgments
rendered against them in any litigation to which they become a party arising
from their association with or activities on behalf of the Company. The Company
may also bear the expenses of such litigation for any of its officers,
directors, employees or agents, upon their promise to repay such sums if it is
ultimately determined that they are not entitled to indemnification. This
indemnification policy could result in substantial expenditures by the Company
which it may be unable to recoup even if so entitled.

EXCLUSION OF DIRECTOR LIABILITY
The Company's Certificate of Incorporation excludes personal liability on the
part of its directors to the Company for monetary damages for breach of
fiduciary duty, except in certain specified circumstances. Accordingly, the
Company will have a much more limited right of action against its directors than
otherwise would be the case. This exclusionary provision does not affect the
liability of any director under federal or applicable state securities laws.



                                       9
<PAGE>   12

NO ACTIVE TRADING MARKET; MARKET VOLATILITY
The Company's shares are traded on the OTC Bulletin Board, a screen-based
trading system operated by the National Association of Securities Dealers, Inc.
Securities traded on the OTC Bulletin Board are, for the most part thinly traded
and are subject to special regulations not imposed on securities listed or
traded on the National Association of Securities Dealers Automated Quotation
("NASDAQ") system or on a national securities exchange. The Company's shares,
like that of the securities of other small, growth-oriented companies, have
experienced in the past and are expected to experience in the future significant
price and volume volatility thereby increasing the risk of ownership to
investors. Historically, the Common Stock has experienced low trading volume.
There can be no assurance that the market price of the Common Stock will remain
at its present level, and any future changes in market price cannot be predicted
as to timing or extent. Past performance of the Common Stock does not guarantee
and should not be construed to imply future performance. Factors such as
announcements by the Company or its competitors concerning technological
innovations, new commercial products or procedures, proposed government
regulations and developments or disputes relating to patents or proprietary
rights may have a significant effect on the market price of the Common Stock.
Changes in the market price of the Common Stock may have no connection with the
Company's actual financial results.

SHARES ELIGIBLE FOR FUTURE SALE; POSSIBLE ADVERSE EFFECT ON MARKET PRICE
As of the date of this Prospectus, the Company had outstanding 9,758,779 shares
of Common Stock. As a result of this registration, based on the September 18,
1997 trading price, approximately 771,000 shares of Common Stock will be
eligible for resale in the public market. In May, 1997 the Company registered
shares related to convertible notes of which 181,230 shares have been issued and
approximately 110,000 shares are currently issuable on the balance of $375,000
of notes at current prices, all freely tradable in the public market. If a large
number of the above mentioned shares, issued or issuable, were sold in the
public market, such sales could have an adverse effect on the market price of
the Company's Common Stock.

NO DIVIDENDS WILL BE PAID IN FORESEEABLE FUTURE
The Company does not contemplate paying cash dividends in the foreseeable
future. Future dividends will depend on the Company's earnings, if any, and its
financial requirements.

NO ANTI-TAKEOVER MEASURES
Neither the Company's charter nor its bylaws contain any provision which is
designed or intended to serve as an anti-takeover measure or which is intended
to entrench Management or discourage mergers or other business combinations
involving the Company.

                                 USE OF PROCEEDS

All proceeds from any sale of shares of Common Stock offered by the Selling
Security Holders will be received by the Selling Security Holders and not by the
Company. The proceeds to the Company from the exercise of the 175,000 Warrants
not to exceed $1,312,500, if any, will be used for general corporate purposes.
The Warrants have a net issuance provision providing for cashless exercise
(resulting in no cash proceeds to the Company) should the Common Shares
underlying the Warrants not be registered as required under the terms of the
Common Stock Purchase Warrants.

                            SELLING SECURITY HOLDERS

An aggregate of up to 1,629,899 shares of Common Stock are being offered for
resale by certain shareholders of the Company plus such presently indeterminate
number of additional shares as may be issuable upon conversion of the Preferred
Stock based upon fluctuations in the conversion price of the Preferred Stock in
accordance with Rule 416 under the Securities Act. Up to 1,454,899 of those
shares are issuable upon conversion by the holders of 350,000 shares of
Preferred Stock. Up to 175,000 shares are issuable upon exercise of Warrants
held by the holders of the Preferred Stock. All shares, to the extent they are
being offered, are being offered for the account of the following shareholders
and their donees, pledgees, transferees or other successors in interest (the
"Selling Security Holders").

The following table sets forth certain information with respect to the Selling
Security Holders for whom the Company is registering the Common Stock for resale
to the public, including: (i) beneficial ownership of Common Stock prior to this
offering (excluding shares issuable upon conversion or exercise of the
Convertible Securities) of this Prospectus, (ii) the maximum number of shares
issuable upon conversion of the Preferred Shares, (iii) the number of shares
issuable upon exercise of Warrants, (iv) the maximum number of shares offered by
each Selling Security Holder (assuming the maximum 


                                       10
<PAGE>   13

number of shares were issued upon conversion); and (v) the number of shares and
percentage of class to be owned after the offering (assuming all shares offered
hereby are sold). The number of shares of Common Stock shown in the following
table as being offered by the Selling Security Holders does not include such
presently indeterminate number of shares of Common Stock as may be issuable upon
conversion of the Preferred Stock pursuant to the provisions thereof regarding
determination of the applicable conversion price but which shares are, in
accordance with Rule 416 under the Securities Act, included in the Registration
Statement of which this Prospectus forms a part. The Company has no knowledge of
the intentions of any Selling Security Holder to actually sell any of the shares
listed under the columns "Maximum Shares Issuable Upon Conversion" or "Shares
Issuable Upon Exercise of Warrants." There are no material relationships between
any of the Selling Security Holders and the Company other than as disclosed
below.


<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------
                                           Maximum
                                            Shares
                                           Issuable
                           Beneficial        Upon                                         
                          Ownership of    Conversion        Shares                     Ownership          
                          Common Stock   of Series A       Issuable      Maximum         After       Percent     
                            Prior to     Convertible    Upon Exercise      Shares     Offering(s)      of
       Selling              Offering    Preferred Stock  of Warrants      Offered       Shares        Class
   Security Holder            (1)            (2)              (3)          (4)(5)                      (6)      
- ------------------------------------------------------------------------------------------------------------
<S>                        <C>          <C>              <C>            <C>           <C>            <C>
Pangaea Fund Limited           -0-         665,098          80,000         745,098           -0-       -0-%

Banque du Credit
Agricole                       -0-          41,567           5,000          46,567           -0-       -0-%

Paul Foti                      -0-          10,392           1,250          11,642           -0-       -0-%

G.P.S. Fund, Ltd.              -0-          41,567           5,000          46,567           -0-       -0-%

Hull Overseas Ltd.             -0-         124,706          15,000         139,706           -0-       -0-%

J.M. Hull
Associates, L.P.               -0-         124,706          15,000         139,706           -0-       -0-%

Legong Investments
N.V                            -0-         166,275          20,000         186,275           -0-       -0-%

Timothy Millhiser            7,274          10,392           1,250          11,642         7,274        *

John Parker                    -0-          10,392           1,250          11,642           -0-       -0-%

Renwick Alpha Fund
L.P. (7)                       -0-         166,275          20,000         186,275           -0-       -0-%

The Renwick Special
Situations Fund L.P.(7)        -0-          93,529          11,250         104,779           -0-       -0-%
- ------------------------------------------------------------------------------------------------------------
   Total                     7,274       1,454,899         175,000       1,629,899         7,274       *
- ------------------------------------------------------------------------------------------------------------
</TABLE>


(1) The number of Common Shares reported above as beneficially owned by each
Selling Security Holder is based solely on a review of a list of the Company's
shareholders prepared by the Company's transfer agent and registrar. None of
these shares are being registered pursuant to this Prospectus. This column does
not include shares beneficially owned which are issuable upon conversion of the
Preferred Stock and exercise of the Warrants.



                                       11
<PAGE>   14

(2) Assumes conversion based on the lowest conversion price possible, or $2.55
per share of Common Stock. The Company has computed the maximum number of shares
issuable pursuant to the Preferred Stock by adding $0.60 per share for one year
(to the mandatory conversion date of August 25, 1998, subject to certain
conditions) to the $10.00 per share purchase price and dividing by the minimum
conversion price of $2.55 per share and multiplying by the number of shares of
Preferred Stock held by each Selling Security Holder or a total of 1,454,899
shares. The actual number of shares issuable on conversion may be less. The
number of shares of Common Stock issuable upon conversion of each share of the
350,000 shares of Preferred Stock is determined by dividing $10.00, plus an
amount accruing at $0.60 per annum, by 85% of the average of the closing bid
prices of the Company's Common Stock each day for the five trading days
immediately preceding the date of conversion provided that in no event shall
such amount to be multiplied by 85% be less than $3.00 per share or greater than
$5.75 per share. The Company may force conversion of the Preferred Stock if the
closing bid price of the Common Stock equals or exceeds $14.00 per share for ten
consecutive trading days and certain other conditions are met. The
aforementioned number of shares would be increased by certain adjustments
including the $0.60 per share of Preferred Stock per annum amount.

(3) Assumes conversion of 100 percent of the Warrants granted to each Preferred
Shareholder based on the exercise price of $7.50 per share.

(4) Assumes issuance of the maximum shares on conversion of the 350,000 shares
of Preferred Stock at the lowest conversion price (see note 2 above) and the
exercise of 100 percent of the Warrants.

(5) The terms of the Preferred Stock and the Warrants provide that the Selling
Security Holders may not convert their Preferred Stock or exercise their
Warrants at any time to acquire a number of shares of Common Stock in excess of
that number which would result in beneficial ownership of more than 4.9% of the
Company's outstanding Common Stock at any time.

(6) An asterisk (*) represents less than 1%.

(7) The Renwick Alpha Fund L.P. and the Renwick Special Situations Fund L.P. are
under common control with Renwick Corporate Finance, Inc., a financial
consultant and advisor to the Company.

                              PLAN OF DISTRIBUTION

The purpose of this Prospectus is to permit the Selling Security Holders, if
they desire, to offer and sell the shares of Common Stock offered hereby (the
"Resale Shares") at such times and at such places as the Selling Security
Holders choose.

The decision to convert the Preferred Stock into common shares, to exercise the
Warrants, or to sell any shares, is within the sole discretion of the holders
thereof. There can be no assurance that any of the shares of Preferred Stock
will be converted or any of the Warrants exercised, or that any shares will be
sold by the Selling Security Holders.

The Resale Shares offered hereby are being sold by the Selling Security Holders
acting as principals for their own accounts. The distribution of the Resale
Shares is not currently subject to any underwriting agreement though the Selling
Security Holders may, under certain circumstances, elect to sell their shares in
an underwritten offering. The Company expects the Selling Security Holders will
sell the Resale Shares covered by this Prospectus through customary brokerage
channels, either through broker-dealers acting as principals, who may then
resell the shares in the over-the-counter market, or at private sales or
otherwise, at market prices prevailing at the time of sale, at prices related to
such prevailing market prices or at negotiated prices. Such sales may be
effected in one or more transactions, including, without limitation, (a) a block
trade in which the broker-dealer so engaged will attempt to sell the Resale
Shares as agent, but may position and resell a portion of the block as principal
to facilitate the transaction; (b) purchases by a broker or dealer as principal
and resale by such broker or dealer for its account pursuant to the Prospectus;
(c) ordinary brokerage transactions and transactions in which the broker
solicits purchasers; and (d) face-to-face or other direct transactions between
the Selling Security Holders and purchasers without a broker-dealer or other
intermediary. In effecting sales, broker-dealers or agents engaged by the
Selling Security Holders may arrange for other broker-dealers or agents to
participate. The Selling Security Holders may effect such transactions by
selling Resale Shares through broker-dealers, and such broker-dealers will
receive compensation in the form of commissions from the Selling Security
Holders and/or the purchasers of the Resale Shares for whom they may act as



                                       12
<PAGE>   15

agent (which compensation may be in excess of customary commissions). The
Selling Security Holders and any broker-dealers that participate with such
Selling Security Holders in the distribution of the Resale Shares may be deemed
to be underwriters and any commissions received by such broker-dealers and any
profit on resale of the Resale Shares sold by them might be deemed to be
underwriting discounts or commissions under the Securities Act. In addition, any
Resale Shares covered by this Prospectus that qualify for sale pursuant to Rule
144 under the Securities Act may be sold under Rule 144 rather than pursuant to
this Prospectus.

The Selling Security Holders are not restricted as to the price or prices at
which they may sell the Resale Shares. Sales of Resale Shares at less than
market prices may depress the market price of the Company's Common Stock.
Moreover, the Selling Security Holders are not restricted as to the number of
Resale Shares which may be sold at any one time, and it is possible that a
significant number of shares could be sold at the same time.

From time to time, one or more of the Selling Security Holders may pledge,
hypothecate or grant a security interest in some or all of the Resale Shares
owned by them, and the pledgees, secured parties or persons whom such securities
have been hypothecated shall, upon foreclosure in the event of default, be
deemed to be Selling Security Holders hereunder. In addition, the Selling
Security Holders may from time to time sell short the Common Stock of the
Company, and in such instances, this Prospectus may be delivered in connection
with such short sale and the Common Stock offered hereby may be used to cover
such short sale.

Including and without limiting the foregoing, in connection with distributions
of the Resale Shares, a Selling Security Holder may enter into hedging
transactions with broker-dealers and the broker-dealers may engage in short
sales of the Common Stock in the course of hedging the positions they assume
with such Selling Security Holder. A Selling Security Holder may also enter into
option or other transactions with broker-dealers that involve the delivery of
the Resale Shares to the broker-dealers, who may then resell or otherwise
transfer such Resale Shares. A Selling Security Holder may also loan or pledge
the Resale Shares to a broker-dealer and the broker-dealer may sell the Resale
Shares so loaned or upon default may sell or otherwise transfer the pledged
Resale Shares.

Under applicable rules and regulations under the Exchange Act, any person
engaged in a distribution of the Resale Shares may not bid for or purchase
shares of Common Stock during a period which commences one business day (5
business days, if the Company's public float is less than $25 million or its
average daily trading volume is less than $100,000) prior to such person's
participation in the distribution, subject to exceptions for certain passive
market making activities. In addition and without limiting the foregoing, each
Selling Security Holder will be subject to applicable provisions of the Exchange
Act and the rules and regulations thereunder, including, without limitation,
Regulation M which provisions may limit the timing of purchase and sales of
shares of the Company's Common Stock by such Selling Security Holder.

The Company will not receive any proceeds from any sales of the Resale Shares,
but will receive the proceeds from exercises of the Warrants held by the Selling
Security Holders, which proceeds, if any, will be used for general corporate
purposes.

In connection with the registration by the Company, the Company shall use its
best efforts to prepare and file with the Commission such amendments and
supplements to this registration statement and the included Prospectus as may be
necessary to keep this registration statement effective and to comply with the
provisions of the Securities Act with respect to the disposition of the shares
covered by the registration statement for the period required to effect the
distribution of such shares.

The Company is paying certain expenses (other than commissions and discounts of
underwriters, dealers or agents) incident to the offer and sale of the shares to
the public, which are estimated to be approximately $8,000. If the Company is
required to update this Prospectus during such period, it may incur additional
expenses in excess of the amount estimated above.

The Company has agreed to indemnify the Selling Security Holders in certain
circumstances, against certain liabilities, including liabilities arising under
the Securities Act.

In order to comply with certain states' securities laws, if applicable, the
shares will be sold in such jurisdictions only through registered or licensed
brokers or dealers. In certain states the Shares may not be sold unless they
have been registered or qualify for sale in such state or an exemption from
registration or qualification is available and is complied with.



                                       13
<PAGE>   16
                            DESCRIPTION OF SECURITIES

The Company is authorized to issue 20,000,000 shares of Common Stock, $.00001
par value per share. As of the date of this Prospectus there were 9,758,779
shares outstanding. The holders of Common Stock are entitled to one vote for
each share held. The affirmative vote of a majority of votes cast at a meeting
which commences with a lawful quorum is sufficient for approval of most matters
upon which shareholders may or must vote, including the questions presented for
approval or ratification at the Annual Meeting. However, removal of a director
from office or repeal of the certificate of incorporation in its entirety
require the affirmative vote of a majority of the total voting power for
approval, and certain other matters (such as shareholder amendment of the
bylaws, and amendment, repeal or adoption of any provision inconsistent with
provisions in the certificate of incorporation regarding indemnification of
directors, officers and others, exclusion of director liability, and the
Company's election not to be governed by statutory provisions concerning
business combinations with interested shareholders) require the affirmative vote
of two-thirds of the total voting power for approval. Common Shares do not carry
cumulative voting rights, and holders of more than 50% of the Common Stock have
the power to elect all directors and, as a practical matter, to control the
Company. Holders of Common Stock are not entitled to preemptive rights, and the
Common Stock is not subject to redemption.

The Company is authorized to issue 5,000,000 shares of preferred stock, $.00001
par value, without any action by the stockholders. The board of directors has
the authority to divide any and all shares of preferred stock into series and to
fix and determine the relative rights and preferences of the preferred stock,
such as the designation of series and the number of shares constituting such
series, dividend rights, redemption and sinking fund provisions, liquidation and
dissolution preferences, conversion or exchange rights and voting rights, if
any. With respect to voting rights, if the preferred stock were permitted to
vote in the election of directors or on other matters, each such share would be
entitled to one vote, and such shares may vote with the shares of Common Stock
or may vote as a separate class. Issuance of preferred stock by the board of
directors could result in such shares having dividend and/or liquidation
preferences senior to the rights of the holders of Common Stock and could dilute
the voting rights of the holders of Common Stock.

The Company has designated 350,000 shares of its preferred stock as Series A
Convertible Preferred Stock ("Preferred Stock") all of which have been issued
and are currently outstanding. The Preferred Stock is non-voting except in
certain matters affecting the Preferred Stockholders. The holders of Preferred
Stock shall be entitled to dividends, when, as, and if declared by the Board of
Directors. The Preferred Stock is convertible as described in note (2) under the
caption "SELLING SECURITY HOLDERS" above. As of September 18, 1997 the shares of
Preferred Stock were convertible into approximately 771,000 shares of Common
Stock. The Preferred Stock has a liquidation preference of $10.00 per preferred
share plus $0.60 per share per annum from issuance and certain other
adjustments. There is no further participation after the liquidation preference
is paid. There are no mandatory or optional redemption rights. In a merger or
consolidation, the Preferred Stock shall retain the same economic benefits as
the Preferred Stock just prior to such transaction. As long as the Company is in
compliance in all material respects with its obligations to the Preferred
Stockholders and the underlying common shares are registered, all the Preferred
Stock not already converted shall be converted to Common Stock in accordance
with the conversion terms on August 25, 1998.

The Company has not paid any cash dividends to date, and no cash dividends will
be declared or paid on the Common Shares in the foreseeable future. Payment of
dividends is solely at the discretion of the Company's board of directors.

Interwest Transfer Company, Inc., 1981 East 4800 South, Suite 100, Salt Lake
City, Utah 84117, acts as transfer agent and registrar for the Common Stock of
the Company. Their telephone number is (801) 272-9294.

                 INDEMNIFICATION FOR SECURITIES ACT LIABILITIES

The Company's certificate of incorporation and bylaws provide broadly for the
indemnification of the directors and officers of the Company for certain
liabilities and costs incurred by them in connection with the performance of
their duties. This indemnification may include indemnification for liabilities
arising under the Securities Act.

Insofar as indemnification for liabilities arising under the Securities Act may
be permitted to directors, officers or persons controlling the Company pursuant
to the foregoing provisions, the Company has been informed that in the opinion
of the Securities and Exchange Commission, such indemnification is against
public policy as expressed in the Securities Act and is, therefore,
unenforceable.



                                       14
<PAGE>   17

                                  LEGAL OPINION

The validity of the Resale Shares offered hereby will be passed on for the
Company by Brasher & Company, Attorneys at Law, 90 Madison Street, Suite 707,
Denver, Colorado 80206.

                                     EXPERTS

The financial statements incorporated by reference in this Prospectus have been
audited by BDO Seidman, LLP, independent certified public accountants, to the
extent and for the periods set forth in their report incorporated herein by
reference, and are incorporated herein in reliance upon such report given upon
the authority of said firm as experts in auditing and accounting.


                                       15

<PAGE>   18
================================================================================

No dealer, salesman or other person has been authorized to give any information
or to make any representation not contained in, or incorporated by reference in,
this Prospectus, and, if given or made, such information or representation must
not be relied upon as having been authorized by the Company. This Prospectus
does not constitute an offer 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 the Company since such date.

                                TABLE OF CONTENTS

<TABLE>
<S>                                       <C>
Available Information......................3
Incorporation of Certain Documents
  by Reference.............................3
Disclosure Regarding Forward-Looking
  Statements...............................4
The Company................................4
Risk Factors...............................6
Use of Proceeds...........................10
Selling Security Holders..................10
Plan of Distribution......................12
Description of Securities.................14
Indemnification for Securities
  Act Liabilities.........................14
Legal Opinion.............................15
Experts...................................15
</TABLE>


================================================================================


                                    For Up to
                                1,629,899 Shares
                                       of
                                  Common Stock

                                   offered by

                            Selling Security Holders








                         AMERICAN TECHNOLOGY CORPORATION




                                   PROSPECTUS





                               September ___, 1997

================================================================================


<PAGE>   19
                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.

The estimated expenses payable by the Company in connection with the offering of
the shares of Common Stock to be registered and offered hereby are as follows:

<TABLE>
               <S>                                  <C>   
               SEC registration fee                 $2,648

               Legal fees and expenses               3,000*

               Accounting fees and expenses          1,000*

               Miscellaneous (including printing
               and transfer fees)                    1,352*
                                                    ------ 

               Total                                $8,000
                                                    ======
</TABLE>

        *  Indicates estimate for the purpose of this filing.

ITEM 15.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

As permitted by Delaware law, the Company's Certificate of Incorporation
provides that the Company will indemnify its officers, directors, employees and
agents against attorneys' fees and other expenses and liabilities they incur to
defend, settle or satisfy any civil or criminal action brought against them
arising out of their association with or activities on behalf of the Company
unless, in any such action, they are adjudged to have acted with gross
negligence or to have engaged in willful misconduct. The Company may also bear
the expenses of such litigation for any such persons upon their promise to repay
such sums if it is ultimately determined that they are not entitled to
indemnification. Such expenditures could be substantial and may not be recouped,
even if the Company is so entitled. Insofar as indemnification for liabilities
arising under the Securities Act of 1933 may be permitted to directors, officers
or persons controlling the Company pursuant to the foregoing provisions, the
Company has been informed that, in the opinion of the Securities and Exchange
Commission, such indemnification is against public policy as expressed in that
Act and is, therefore, unenforceable.

Pursuant to the General Corporation Law of Delaware, the Company's Certificate
of Incorporation excludes personal liability on the part of its directors to the
Company for monetary damages based upon any violation of their fiduciary duties
as directors, except as to liability for any breech of the duty of loyalty, acts
or omissions not in good faith or which involve intentional misconduct or a
knowing violation of law, acts in violation of Section 174 of the General
Corporation Law of Delaware, or any transaction from which a director receives
an improper personal benefit. This exclusion of liability does not limit any
right which a director may have to be indemnified and does not affect any
director's liability under federal or applicable state securities laws.

ITEM 16.  EXHIBITS.

The following is a list of all the exhibits filed as part of the Registration
Statement:

       4.11    Form of Registration Rights Agreement dated as of August 12, 1997
               by and between the Company and Eleven Purchasers of Series A
               Convertible Preferred Stock

       5.1     Opinion of Brasher & Company, Attorneys at Law

      23.1     Consent of BDO Seidman, LLP




                                       1
<PAGE>   20

ITEM 17.  UNDERTAKINGS.

The undersigned Registrant hereby undertakes that it will:

        (1) File, during any period in which offers or sales are being made, a
        post-effective amendment to this Registration Statement to:

               (i) Include any prospectus required by section 10(a)(3) of the
               Securities Act;

               (ii) To reflect in the prospectus any facts or events arising
               after the effective date of this Registration Statement (or the
               most recent post-effective amendment thereof) which, individually
               or in the aggregate, represent a fundamental change in the
               information set forth in this Registration Statement (or the most
               recent post-effective amendment thereof);

               (iii) To include any material information with respect to the
               plan of distribution not previously disclosed in this
               Registration Statement or any material change to such information
               in this Registration Statement; provided, however, that
               paragraphs (1)(i) and (1)(ii) do not apply if the information
               required to be included in a post-effective amendment by those
               paragraphs is contained in periodic reports filed by the
               Registrant pursuant to Section 13 or Section 15(d) of the
               Exchange Act and are incorporated by reference in this
               Registration Statement.

        (2) That, for the purpose of determining any liability under the
        Securities Act, each such post-effective amendment shall be deemed to be
        a new registration statement relating to the securities offered therein,
        and the offering of such securities at that time shall be deemed to be
        the initial bona fide offering thereof.

        (3) To remove from registration by means of a post-effective amendment
        any of the securities being registered which remain unsold at the
        termination of the offering.

The undersigned Registrant hereby undertakes that, for purposes of determining
any liability under the Securities Act, each filing of the Registrant's annual
report pursuant to Section 13(a) or 15(d) of the Exchange Act that is
incorporated by reference in this Registration Statement shall be deemed to be a
new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

For purposes of determining any liability under the Securities Act, (i) the
information omitted from the form of prospectus filed as part of this
Registration Statement in reliance upon Rule 430A and contained in a form of
prospectus filed by the Registrant pursuant to Rule 424(b)(1), or (4) or 497(h)
under the Securities Act shall be deemed to be part of this Registration
Statement as of the time it was declared effective; and (ii) each post-effective
amendment that contains a form of prospectus shall be deemed to be a new
registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.



                                       2
<PAGE>   21
                                   SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the Registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-3 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Poway, and the State of California, as of the 19th
day of September, 1997.

                                    AMERICAN TECHNOLOGY CORPORATION


                                    By: /s/ DALE WILLIAMS
                                    Dale Williams
                                    Chairman, President and Chief Executive 
                                    Officer


Pursuant to the requirements of the Securities Act of 1933, this Registration
Statement has been signed by the following persons in the capacities and as of
the dates indicated.




Date: September 19, 1997           By /s/ DALE WILLIAMS
                                      -----------------------------------
                                   Dale Williams, Chairman, President and
                                   Chief Executive Officer and Director
                                   (Principal Executive Officer)

Date: September 19, 1997           By /s/ ROBERT PUTNAM
                                      -----------------------------------
                                   Robert Putnam, Vice President and
                                   Treasurer
                                   (Principal Financial and Accounting Officer)


Date: September 19, 1997           By /s/ Richard M. Wagner
                                      -----------------------------------
                                   Richard M. Wagner
                                   Secretary and Director


Date: September 19, 1997           By /s/ Elwood G. Norris
                                      -----------------------------------
                                   Elwood G. Norris
                                   Chief Technology Officer and Director


Date: September 19, 1997           By /s/ Joel A. Barker
                                      -----------------------------------
                                   Joel A. Barker
                                   Director





<PAGE>   1
                                                                    EXHIBIT 4.11
                                           Form of Registration Rights Agreement
                                      dated as of August 12, 1997 by and between
                                            the Company and Eleven Purchasers of
                                            Series A Convertible Preferred Stock
                                             (Individual Agreements differ as to
                                                    the name of the Investor and
                                                     Number of Preferred Shares)



                          REGISTRATION RIGHTS AGREEMENT

               THIS REGISTRATION RIGHTS AGREEMENT, dated as of August 12, 1997
(this "Agreement"), is made by and between AMERICAN TECHNOLOGY CORPORATION, a
Delaware corporation (the "Company"), and the person named on the signature page
hereto (the "Initial Investor").

                              W I T N E S S E T H:

               WHEREAS, in connection with the Subscription Agreement, dated as
of August 12, 1997, between the Initial Investor and the Company (the
"Subscription Agreement"), the Company has agreed, upon the terms and subject to
the conditions of the Subscription Agreement, to issue and sell to the Initial
Investor an aggregate of __________ shares (the "Preferred Shares") of preferred
stock of the Company as provided in the Subscription Agreement, which shares of
Preferred Stock are convertible into shares (the "Conversion Shares") of Common
Stock, $.00001 par value (the "Common Stock"), of the Company, and warrants (the
"Warrants") to purchase shares (the "Warrant Shares") of Common Stock of the
Company; and

               WHEREAS, to induce the Initial Investor to execute and deliver
the Subscription Agreement, the Company has agreed to provide certain
registration rights under the Securities Act of 1933, as amended, and the rules
and regulations thereunder, or any similar successor statute (collectively, the
"Securities Act"), and applicable state securities laws with respect to the
Conversion Shares and the Warrant Shares;

               NOW, THEREFORE, in consideration of the premises and the mutual
covenants contained herein and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the Company and the
Initial Investor hereby agree as follows:

               1.     DEFINITIONS.

               (a) As used in this Agreement, the following terms shall have the
following meanings:

               "Certificate of Designations" means the Certificate of
Designations of Series A Convertible Preferred Stock as filed by the Company
with the Secretary of State of the State of Delaware.

               "Investor" means the Initial Investor and any transferee or
assignee who agrees to become bound by the provisions of this Agreement in
accordance with Section 9 hereof.

               "register," "registered," and "registration" refer to a
registration effected by preparing and filing a Registration Statement or
Statements in compliance with the Securities Act and pursuant to Rule 415 under
the Securities Act or any successor rule providing for offering securities on a
continuous basis ("Rule 415"), and the declaration or ordering of effectiveness
of such Registration Statement by the United States Securities and Exchange
Commission (the "SEC").

               "Registrable Securities" means the Conversion Shares and the
Warrant Shares.

               "Registration Period" means the period from the Closing Date to
the earlier of (i) such date as is two years after the Closing Date and (ii) the
date on which all Registrable Securities have been sold by the Investors under
circumstances in which the buyers may resell such Registrable Securities without
registration under the 



                                       1
<PAGE>   2

Securities Act; provided, however, that if on the date specified in the
preceding clause (i) the Investors would not be permitted under the Securities
Act to sell all Registrable Securities beneficially owned by the Investors
without restriction on the manner of sale or the amount of securities sold and
without the requirement for the giving of any notice to, or the making of any
filing with, the SEC, then the period specified in such clause (i) shall be
extended to the earlier of the date on which the Investors are so permitted or
the date which is three years after the Closing Date.

               "Registration Statement" means a registration statement of the
Company under the Securities Act, including any amendment thereto.

               "SEC Filing Date" means the date the Registration Statement is
first filed with the SEC pursuant to Section 2.

               (b) As used in this Agreement, the term Investor includes (i)
each Investor (as defined above) and (ii) each person who is a permitted
transferee or assignee of the Registrable Securities pursuant to Section 9 of
this Agreement.

               (c) Capitalized terms defined in the introductory paragraph or
the recitals to this Agreement shall have the respective meanings therein
provided. Capitalized terms used herein and not otherwise defined herein shall
have the respective meanings set forth in the Subscription Agreement.

               2.     REGISTRATION.

               (a) MANDATORY REGISTRATION. The Company shall prepare, and on or
prior to the date which is 30 days after the Closing Date, file with the SEC a
Registration Statement on Form S-3 or, if Form S-3 is not available, Form SB-2
which on the SEC Filing Date covers the resale of a number of shares of Common
Stock equal to at least the number of Conversion Shares and Warrant Shares
issuable to the Investor upon conversion of the Preferred Shares and exercise of
the Warrants, determined as if the Preferred Shares were converted in full and
the Warrants were exercised in full on the SEC Filing Date (determined without
regard to the limitation contained in the second sentence of Section 10(a) of
the Certificate of Designations and the limitation contained in Section 1.1(b)
of the Warrants), and which Registration Statement shall state that, in
accordance with Rule 416 under the Securities Act, such Registration Statement
also covers such indeterminate number of additional shares of Common Stock as
may become issuable upon conversion of the Preferred Shares and exercise of the
Warrants to prevent dilution resulting from stock splits, stock dividends or
similar transactions. If, notwithstanding Rule 416 under the Securities Act, the
Registration Statement is not deemed to cover such indeterminate number of
shares of Common Stock as shall be issuable upon conversion of the Preferred
Shares and exercise of the Warrants based on changes from time to time in the
conversion price and exercise price thereof, and without limiting the rights of
the holder of the Preferred Shares to have all or a portion of the Preferred
Shares redeemed pursuant to Section 11 of the Certificate of Designations, at
any time the number of shares of Common Stock included in the Registration
Statement required to be filed as provided in the first sentence of this Section
2(a) shall be insufficient to cover the number of shares of Common Stock
issuable on conversion in full of the unconverted Preferred Shares and
unexercised Warrants, then promptly, but in no event later than 20 days after
such insufficiency shall occur, the Company shall file with the SEC an
additional Registration Statement on Form S-3 or Form SB-2 (which shall not
constitute a post-effective amendment to the Registration Statement filed
pursuant to the first sentence of this Section 2(a)) covering such number of
shares of Common Stock as shall be sufficient to permit such conversion and
exercise. For all purposes of this Agreement such additional Registration
Statement shall be deemed to be the Registration Statement required to be filed
by the Company pursuant to this Section 2(a), and the Company and the Investors
shall have the same rights and obligations with respect to such additional
Registration Statement as they shall have with respect to the initial
Registration Statement required to be filed by the Company pursuant to this
Section 2(a).

               (b) CERTAIN OFFERINGS. If any offering pursuant to a Registration
Statement pursuant to Section 2(a) hereof involves an underwritten offering, the
Investors who hold a majority in interest of the Registrable Securities subject
to such underwritten offering shall have the right to select one legal counsel
and an investment banker or bankers and manager or managers to administer the
offering, which investment banker or bankers or manager or managers shall be
reasonably satisfactory to the Company. The Investors who hold the Registrable
Securities to be included in such underwriting shall pay all underwriting
discounts and commissions and other fees and expenses of such investment banker
or bankers and manager or managers so selected in accordance with this Section
2(b) (other than fees and expenses relating to registration of Registrable
Securities under federal or state securities laws, which are payable by the
Company pursuant to 


                                       2
<PAGE>   3

Section 5 hereof) with respect to their Registrable Securities and the fees and
expenses of such legal counsel so selected by the Investors.

               (c) ADJUSTMENT OF CONVERSION TERMS. If the Registration Statement
covering the Registrable Securities which is required to be filed by the Company
pursuant to the first sentence of Section 2(a) hereof is not effective within
120 days after the Closing Date and in certain other circumstances specified in
Section 10 of the Certificate of Designations, the terms of conversion of the
Preferred Stock shall be adjusted as provided in the Certificate of
Designations.

               (d) PIGGY-BACK REGISTRATIONS. If at any time the Company shall
determine to prepare and file with the SEC a Registration Statement relating to
an offering for its own account or the account of others under the Securities
Act of any of its equity securities, other than on Form S-4 or Form S-8 or their
then equivalents relating to equity securities to be issued solely in connection
with any acquisition of any entity or business or equity securities issuable in
connection with stock option or other employee benefit plans, the Company shall
send to each Investor who is entitled to registration rights under this Section
2(d) written notice of such determination and, if within twenty (20) days after
receipt of such notice, such Investor shall so request in writing, the Company
shall include in such Registration Statement all or any part of the Registrable
Securities such Investor requests to be registered, except that if, in
connection with any underwritten public offering for the account of the Company
the managing underwriter(s) thereof shall impose a limitation on the number of
shares of Common Stock which may be included in the Registration Statement
because, in such underwriter(s)' judgment, such limitation is necessary to
effect an orderly public distribution, then the Company shall be obligated to
include in such Registration Statement only such limited portion of the
Registrable Securities with respect to which such Investor has requested
inclusion hereunder. Any exclusion of Registrable Securities shall be made pro
rata among the Investors seeking to include Registrable Securities, in
proportion to the number of Registrable Securities sought to be included by such
Investors; provided, however, that the Company shall not exclude any Registrable
Securities unless the Company has first excluded all outstanding securities the
holders of which are not entitled by right to inclusion of securities in such
Registration Statement; and provided further, however, that, after giving effect
to the immediately preceding proviso, any exclusion of Registrable Securities
shall be made pro rata with holders of other securities having the right to
include such securities in the Registration Statement, based on the number of
securities for which registration is requested except to the extent such pro
rata exclusion of such other securities is prohibited under any written
agreement entered into by the Company with the holder of such other securities
prior to the date of this Agreement, in which case such other securities shall
be excluded, if at all, in accordance with the terms of such agreement. No right
to registration of Registrable Securities under this Section 2(d) shall be
construed to limit any registration required under Section 2(a) hereof. The
obligations of the Company under this Section 2(d) may be waived by Investors
holding a majority in interest of the Registrable Securities and shall expire
after the Company has afforded the opportunity for the Investors to exercise
registration rights under this Section 2(d) for two registrations; provided,
however, that any Investor who shall have had any Registrable Securities
excluded from any Registration Statement in accordance with this Section 2(d)
shall be entitled to include in an additional Registration Statement filed by
the Company the Registrable Securities so excluded. Notwithstanding any other
provision of this Agreement, if the Registration Statement required to be filed
pursuant to Section 2(a) of this Agreement shall have been ordered effective by
the SEC and the Company shall have maintained the effectiveness of such
Registration Statement as required by this Agreement and if the Company shall
otherwise have complied in all material respects with its obligations under this
Agreement, the Certificate of Designations and the Transfer Agent Agreement,
then the Company shall not be obligated to register any Registrable Securities
on such Registration Statement referred to in this Section 2(d).

               (e) ELIGIBILITY FOR FORM S-3 AND FORM SB-2. The Company meets the
requirements for the use of Form S-3 or Form SB-2 for registration of the
Registrable Securities for resale by the Investors. The Company shall file all
reports required to be filed by the Company with the SEC in a timely manner so
as to become eligible for the use of such Form used to register the Registrable
Securities and so as to maintain such eligibility for the use of such Form.

               3. OBLIGATIONS OF THE COMPANY. In connection with the
registration of the Registrable Securities, the Company shall:

               (a) prepare promptly, and file with the SEC not later than 30
days after the Closing Date, a Registration Statement with respect to the number
of Registrable Securities provided in Section 2(a), and thereafter to use its
best efforts to cause each Registration Statement relating to Registrable
Securities to become effective as soon as possible after such filing, and keep
the Registration Statement effective pursuant to Rule 415 at all times during
the 


                                       3
<PAGE>   4

Registration Period; submit to the SEC, within three business days after the
Company learns that no review of the Registration Statement will be made by the
staff of the SEC or that the staff of the SEC has no further comments on the
Registration Statement, as the case may be, a request for acceleration of
effectiveness of the Registration Statement to a time and date not later than 48
hours after the submission of such request; and the Company represents and
warrants to, and covenants and agrees with, the Investors that the Registration
Statement (including any amendments or supplements thereto and prospectuses
contained therein), at the time it is first filed with the SEC, at the time it
is ordered effective by the SEC and at all time during which it is required to
be effective hereunder (and each such amendment and supplement at the time it is
filed with the SEC and at all time during which it is available for use in
connection with the offer and sale of the Registrable Securities) shall not
contain any untrue statement of a material fact or omit to state a material fact
required to be stated therein, or necessary to make the statements therein, in
light of the circumstances in which they were made, not misleading; provided,
however, that, subject to the conditions set forth in Section 4(a) below, each
Investor may notify the Company in writing that it wishes to exclude all or a
portion of its Registrable Securities from such Registration Statement.

               (b) prepare and file with the SEC such amendments (including
post-effective amendments) and supplements to the Registration Statement and the
prospectus used in connection with the Registration Statement as may be
necessary to keep the Registration Statement effective at all times during the
Registration Period, and, during the Registration Period, comply with the
provisions of the Securities Act with respect to the disposition of all
Registrable Securities of the Company covered by the Registration Statement;

               (c) furnish to each Investor whose Registrable Securities are
included in the Registration Statement and its legal counsel, (1) promptly after
the same is prepared and publicly distributed, filed with the SEC or received by
the Company, one copy of the Registration Statement and any amendment thereto,
each preliminary prospectus and prospectus and each amendment or supplement
thereto, each letter written by or on behalf of the Company to the SEC or the
staff of the SEC and each item of correspondence from the SEC or the staff of
the SEC relating to such Registration Statement (other than any portion of any
thereof which contains information for which the Company has sought confidential
treatment) and (2) such number of copies of a prospectus, including a
preliminary prospectus, and all amendments and supplements thereto and such
other documents, as such Investor may reasonably request in order to facilitate
the disposition of the Registrable Securities owned by such Investor;

               (d) use its best efforts to (i) register and qualify the
Registrable Securities covered by the Registration Statement under such
securities or blue sky laws of such jurisdictions as the Investors who hold a
majority in interest of the Registrable Securities being offered reasonably
request, (ii) prepare and file in those jurisdictions such amendments (including
post-effective amendments) and supplements to such registrations and
qualifications as may be necessary to maintain the effectiveness thereof at all
times until the end of the Registration Period, (iii) take such other actions as
may be necessary to maintain such registrations and qualifications in effect at
all times during the Registration Period and (iv) take all other actions
reasonably necessary or advisable to qualify the Registrable Securities for sale
in such jurisdictions; provided, however, that the Company shall not be required
in connection therewith or as a condition thereto (I) to qualify to do business
in any jurisdiction where it would not otherwise be required to qualify but for
this Section 3(d), (II) to subject itself to general taxation in any such
jurisdiction, (III) to file a general consent to service of process in any such
jurisdiction, (IV) to provide any undertakings that cause more than nominal
expense or burden to the Company or (V) to make any change in its charter or
by-laws, which in each case the Board of Directors of the Company determines to
be contrary to the best interests of the Company and its stockholders;

               (e) in the event that the Registrable Securities are being
offered in an underwritten offering, enter into and perform its obligations
under an underwriting agreement, in usual and customary form, including, without
limitation, customary indemnification and contribution obligations, with the
underwriters of such offering;

               (f) as promptly as practicable after becoming aware of such event
or circumstance, notify each Investor of any event or circumstance of which the
Company has knowledge, as a result of which the prospectus included in the
Registration Statement, as then in effect, includes an untrue statement of a
material fact or omits to state a material fact required to be stated therein or
necessary to make the statements therein, in light of the circumstances under
which they were made, not misleading, and use its best efforts promptly to
prepare a supplement or amendment to the Registration Statement to correct such
untrue statement or omission, and deliver a number of copies of such supplement
or amendment to each Investor as such Investor may reasonably request;



                                       4
<PAGE>   5

               (g) as promptly as practicable after becoming aware of such
event, notify each Investor who holds Registrable Securities being sold (or, in
the event of an underwritten offering, the managing underwriters) of the
issuance by the SEC of any stop order or other suspension of effectiveness of
the Registration Statement at the earliest possible time;

               (h) permit a single firm of counsel designated as selling
stockholders' counsel by (i) if prior to the initial effective time of the
Registration Statement, Pangaea Fund Limited and (ii) if after the initial
effective time of the Registration Statement, the Investors who hold a majority
in interest of the Registrable Securities being sold, to review and comment on
the Registration Statement and all amendments and supplements thereto a
reasonable period of time prior to their filing with the SEC;

               (i) make generally available to its security holders as soon as
practical, but not later than ninety (90) days after the close of the period
covered thereby, an earnings statement (in form complying with the provisions of
Rule 158 under the Securities Act) covering a twelve-month period beginning not
later than the first day of the Company's fiscal quarter next following the
effective date of the Registration Statement;

               (j) at the request of the Investors who hold a majority in
interest of the Registrable Securities being sold, furnish on the date that
Registrable Securities are delivered to an underwriter, if any, for sale in
connection with the Registration Statement (i) a letter, dated such date, from
the Company's independent certified public accountants in form and substance as
is customarily given by independent certified public accountants to underwriters
in an underwritten public offering, addressed to the underwriters; and (ii) an
opinion, dated such date, from counsel representing the Company for purposes of
such Registration Statement, in form and substance as is customarily given in an
underwritten public offering, addressed to the underwriters and the Investors;

               (k) make available for inspection by any Investor, any
underwriter participating in any disposition pursuant to the Registration
Statement, and any attorney, accountant or other agent retained by any such
Investor or underwriter (collectively, the "Inspectors"), all pertinent
financial and other records, pertinent corporate documents and properties of the
Company (collectively, the "Records"), as shall be reasonably necessary to
enable each Inspector to exercise its due diligence responsibility, and cause
the Company's officers, directors and employees to supply all information which
any Inspector may reasonably request for purposes of such due diligence;
provided, however, that each Inspector shall hold in confidence and shall not
make any disclosure (except to an Investor) of any Record or other information
which the Company determines in good faith to be confidential, and of which
determination the Inspectors are so notified, unless (i) the disclosure of such
Records is necessary to avoid or correct a misstatement or omission in any
Registration Statement, (ii) the release of such Records is ordered pursuant to
a subpoena or other order from a court or government body of competent
jurisdiction or (iii) the information in such Records has been made generally
available to the public other than by disclosure in violation of this or any
other agreement. The Company shall not be required to disclose any confidential
information in such Records to any Inspector until and unless such Inspector
shall have entered into confidentiality agreements (in form and substance
satisfactory to the Company) with the Company with respect thereto,
substantially in the form of this Section 3(k). Each Investor agrees that it
shall, upon learning that disclosure of such Records is sought in or by a court
or governmental body of competent jurisdiction or through other means, give
prompt notice to the Company and allow the Company, at the Company's own
expense, to undertake appropriate action to prevent disclosure of, or to obtain
a protective order for, the Records deemed confidential. The Company shall hold
in confidence and shall not make any disclosure of information concerning an
Investor provided to the Company pursuant to Section 4(e) hereof unless (i)
disclosure of such information is necessary to comply with federal or state
securities laws, (ii) the disclosure of such information is necessary to avoid
or correct a misstatement or omission in any Registration Statement, (iii) the
release of such information is ordered pursuant to a subpoena or other order
from a court or governmental body of competent jurisdiction or (iv) such
information has been made generally available to the public other than by
disclosure in violation of this or any other agreement. The Company agrees that
it shall, upon learning that disclosure of such information concerning an
Investor is sought in or by a court or governmental body of competent
jurisdiction or through other means, give prompt notice to such Investor, at
such Investor's own expense, to undertake appropriate action to prevent
disclosure of, or to obtain a protective order for, such information;

               (l) use its best efforts to cause all the Registrable Securities
covered by the Registration Statement to be listed on the OTC Bulletin Board or
such other principal national securities market on which securities of the same
class or series issued by the Company are then listed or traded;



                                       5
<PAGE>   6
               (m) provide a transfer agent and registrar, which may be a single
entity, for the Registrable Securities not later than the effective date of the
Registration Statement;

               (n) cooperate with the Investors who hold Registrable Securities
being offered and the managing underwriter or underwriters, if any, to
facilitate the timely preparation and delivery of certificates (not bearing any
restrictive legends) representing Registrable Securities to be offered pursuant
to the Registration Statement and enable such certificates to be in such
denominations or amounts as the case may be, as the managing underwriter or
underwriters, if any, or the Investors may reasonably request and registered in
such names as the managing underwriter or underwriters, if any, or the Investors
may request; and, within three business days after a Registration Statement
which includes Registrable Securities is ordered effective by the SEC, the
Company shall deliver, and shall cause legal counsel selected by the Company to
deliver, to the transfer agent for the Registrable Securities (with copies to
the Investors whose Registrable Securities are included in such Registration
Statement) an instruction substantially in the form attached hereto as EXHIBIT 1
and an opinion of such counsel in the form attached hereto as EXHIBIT 2;

               (o) during the Registration Period, the Company shall not bid for
or purchase any Common Stock or any right to purchase Common Stock or attempt to
induce any person to purchase any such security or right if such bid, purchase
or attempt would in any way limit the right of the Investors to sell Registrable
Securities by reason of the limitations set forth in Regulation M under the
Exchange Act; and

               (p) take all other reasonable actions necessary to expedite and
facilitate disposition by the Investor of the Registrable Securities pursuant to
the Registration Statement.

               4. OBLIGATIONS OF THE INVESTORS. In connection with the
registration of the Registrable Securities, the Investors shall have the
following obligations:

               (a) It shall be a condition precedent to the obligations of the
Company to complete the registration pursuant to this Agreement with respect to
the Registrable Securities of a particular Investor that such Investor shall
furnish to the Company such information regarding itself, the Registrable
Securities held by it and the intended method of disposition of the Registrable
Securities held by it as shall be reasonably required to effect the registration
of such Registrable Securities and shall execute such documents in connection
with such registration as the Company may reasonably request. At least four (4)
Business Days prior to the first anticipated filing date of the Registration
Statement, the Company shall notify each Investor of the information the Company
requires from each such Investor (the "Requested Information") if any of such
Investor's Registrable Securities are eligible for inclusion in the Registration
Statement. If at least one (1) Business Day prior to the filing date the Company
has not received the Requested Information from an Investor (a "Non-Responsive
Investor"), then the Company may file the Registration Statement without
including Registrable Securities of such Non-Responsive Investor;

               (b) Each Investor by such Investor's acceptance of the
Registrable Securities agrees to cooperate with the Company as reasonably
requested by the Company in connection with the preparation and filing of the
Registration Statement hereunder, unless such Investor has notified the Company
in writing of such Investor's election to exclude all of such Investor's
Registrable Securities from the Registration Statement;

               (c) In the event Investors holding a majority in interest of the
Registrable Securities being registered determine to engage the services of an
underwriter, each Investor agrees to enter into and perform such Investor's
obligations under an underwriting agreement, in usual and customary form,
including, without limitation, customary indemnification and contribution
obligations, with the managing underwriter of such offering and take such other
actions as are reasonably required in order to expedite or facilitate the
disposition of the Registrable Securities, unless such Investor has notified the
Company in writing of such Investor's election to exclude all of such Investor's
Registrable Securities from the Registration Statement;

               (d) Each Investor agrees that, upon receipt of any notice from
the Company of the happening of any event of the kind described in Section 3(f)
or 3(g), such Investor will immediately discontinue disposition of Registrable
Securities pursuant to the Registration Statement covering such Registrable
Securities until such Investor's receipt of the copies of the supplemented or
amended prospectus contemplated by Section 3(f) or 3(g) and, if so directed by
the Company, such Investor shall deliver to the Company (at the expense of the
Company) or destroy (and deliver to the Company a 


                                       6
<PAGE>   7

certificate of destruction) all copies in such Investor's possession, of the
prospectus covering such Registrable Securities current at the time of receipt
of such notice; and

               (e) No Investor may participate in any underwritten registration
hereunder unless such Investor (i) agrees to sell such Investor's Registrable
Securities on the basis provided in any underwriting arrangements approved by
the Investors entitled hereunder to approve such arrangements, (ii) completes
and executes all questionnaires, powers of attorney, indemnities, underwriting
agreements and other documents reasonably required under the terms of such
underwriting arrangements and (iii) agrees to pay its pro rata share of all
underwriting discounts and commissions and other fees and expenses of investment
bankers and any manager or managers of such underwriting and legal expenses of
the underwriters applicable with respect to its Registrable Securities, in each
case to the extent not payable by the Company pursuant to the terms of this
Agreement.

               5. EXPENSES OF REGISTRATION. All reasonable expenses, other than
underwriting discounts and commissions and other fees and expenses of investment
bankers and other than brokerage commissions, incurred in connection with
registrations, filings or qualifications pursuant to Section 3, including,
without limitation, all registration, listing and qualifications fees, printers
and accounting fees and the fees and disbursements of counsel for the Company,
shall be borne by the Company, provided, however, that the Investors shall bear
the fees and out-of-pocket expenses of any legal counsel retained by the
Investors pursuant to Section 2(b) hereof or otherwise.

               6. INDEMNIFICATION. In the event any Registrable Securities are
included in a Registration Statement under this Agreement:

               (a) To the extent permitted by law, the Company will indemnify
and hold harmless each Investor who holds such Registrable Securities, the
directors, if any, of such Investor, the officers, if any, of such Investor,
each person, if any, who controls any Investor within the meaning of the
Securities Act or the Exchange Act, any underwriter (as defined in the
Securities Act) for the Investors, the directors, if any, of such underwriter
and the officers, if any, of such underwriter, and each person, if any, who
controls any such underwriter within the meaning of the Securities Act or the
Exchange Act (each, an "Indemnified Person"), against any losses, claims,
damages, liabilities or expenses (joint or several) incurred (collectively,
"Claims") to which any of them may become subject under the Securities Act, the
Exchange Act or otherwise, insofar as such Claims (or actions or proceedings,
whether commenced or threatened, in respect thereof) arise out of or are based
upon any of the following statements, omissions or violations in the
Registration Statement, or any post-effective amendment thereof, or any
prospectus included therein: (i) any untrue statement or alleged untrue
statement of a material fact contained in the Registration Statement or any
post-effective amendment thereof or the omission or alleged omission to state
therein a material fact required to be stated therein or necessary to make the
statements therein not misleading, (ii) any untrue statement or alleged untrue
statement of a material fact contained in any preliminary prospectus if used
prior to the effective date of such Registration Statement, or contained in the
final prospectus (as amended or supplemented, if the Company files any amendment
thereof or supplement thereto with the SEC) or the omission or alleged omission
to state therein any material fact necessary to make the statements made
therein, in light of the circumstances under which the statements therein were
made, not misleading or (iii) any violation or alleged violation by the Company
of the Securities Act, the Exchange Act, any state securities law or any rule or
regulation under the Securities Act, the Exchange Act or any state securities
law (the matters in the foregoing clauses (i) through (iii) being, collectively,
"Violations"). Subject to the restrictions set forth in Section 6(d) with
respect to the number of legal counsel, the Company shall reimburse the
Investors and each such underwriter or controlling person, promptly as such
expenses are incurred and are due and payable, for any legal fees or other
reasonable expenses incurred by them in connection with investigating or
defending any such Claim. Notwithstanding anything to the contrary contained
herein, the indemnification agreement contained in this Section 6(a): (I) shall
not apply to a Claim arising out of or based upon a Violation which occurs in
reliance upon and in conformity with information furnished in writing to the
Company by any Indemnified Person or underwriter for such Indemnified Person
expressly for use in connection with the preparation of the Registration
Statement or any such amendment thereof or supplement thereto, if such
prospectus was timely made available by the Company pursuant to Section 3(c)
hereof; (II) with respect to any preliminary prospectus shall not inure to the
benefit of any such person from whom the person asserting any such Claim
purchased the Registrable Securities that are the subject thereof (or to the
benefit of any person controlling such person) if the untrue statement or
omission of material fact contained in the preliminary prospectus was corrected
in the prospectus, as then amended or supplemented, if such prospectus was
timely made available by the Company pursuant to Section 3(c) hereof; and (III)
shall not apply to amounts paid in settlement of any Claim if such settlement is
effected without the prior written consent of the Company, which consent shall
not be unreasonably withheld. Such indemnity shall remain in full force and
effect regardless of any 


                                       7
<PAGE>   8

investigation made by or on behalf of the Indemnified Person and shall survive
the transfer of the Registrable Securities by the Investors pursuant to Section
9.

               (b) In connection with any Registration Statement in which an
Investor is participating, each such Investor agrees to indemnify and hold
harmless, to the same extent and in the same manner set forth in Section 6(a),
the Company, each of its directors, each of its officers who signs the
Registration Statement, each person, if any, who controls the Company within the
meaning of the Securities Act or the Exchange Act, any underwriter and any other
stockholder selling securities pursuant to the Registration Statement or any of
its directors or officers or any person who controls such stockholder or
underwriter within the meaning of the Securities Act or the Exchange Act
(collectively and together with an Indemnified Person, an "Indemnified Party"),
against any Claim to which any of them may become subject, under the Securities
Act, the Exchange Act or otherwise, insofar as such Claim arises out of or is
based upon any Violation, in each case to the extent (and only to the extent)
that such Violation occurs in reliance upon and in conformity with written
information furnished to the Company by such Investor expressly for use in
connection with such Registration Statement; and such Investor will reimburse
any legal or other expenses reasonably incurred by any Indemnified Party in
connection with investigating or defending any such Claim; provided, however,
that the indemnity agreement contained in this Section 6(b) shall not apply to
amounts paid in settlement of any Claim if such settlement is effected without
the prior written consent of such Investor, which consent shall not be
unreasonably withheld; provided, further, however, that the Investor shall be
liable under this Section 6(b) for only that amount of a Claim as does not
exceed the amount by which the net proceeds to such Investor from the sale of
Registrable Securities pursuant to such Registration Statement exceeds the
purchase price paid by such Investor for such Registrable Securities. Such
indemnity shall remain in full force and effect regardless of any investigation
made by or on behalf of such Indemnified Party and shall survive the transfer of
the Registrable Securities by the Investors pursuant to Section 9.
Notwithstanding anything to the contrary contained herein, the indemnification
agreement contained in this Section 6(b) with respect to any preliminary
prospectus shall not inure to the benefit of any Indemnified Party if the untrue
statement or omission of material fact contained in the preliminary prospectus
was corrected on a timely basis in the prospectus, as then amended or
supplemented.

               (c) The Company shall be entitled to receive indemnities from
underwriters, selling brokers, dealer managers and similar securities industry
professionals participating in any distribution, to the same extent as provided
above, with respect to information so furnished in writing by such persons
expressly for inclusion in the Registration Statement.

               (d) Promptly after receipt by an Indemnified Person or
Indemnified Party under this Section 6 of notice of the commencement of any
action (including any governmental action), such Indemnified Person or
Indemnified Party shall, if a Claim in respect thereof is to be made against any
indemnifying party under this Section 6, deliver to the indemnifying party a
written notice of the commencement thereof and the indemnifying party shall have
the right to participate in, and, to the extent the indemnifying party so
desires, jointly with any other indemnifying party similarly noticed, to assume
control of the defense thereof with counsel selected by the indemnifying party
but reasonably acceptable to the Indemnified Person or the Indemnified Party, as
the case may be; provided, however, that an Indemnified Person or Indemnified
Party shall have the right to retain its own counsel with the fees and expenses
to be paid by the indemnifying party, if, in the reasonable opinion of counsel
retained by the indemnifying party, the representation by such counsel of the
Indemnified Person or Indemnified Party and the indemnifying party would be
inappropriate due to actual or potential differing interests between such
Indemnified Person or Indemnified Party and any other party represented by such
counsel in such proceeding. In such event, the Company shall pay for only one
separate legal counsel for the Investors; such legal counsel shall be selected
by the Investors holding a majority in interest of the Registrable Securities
included in the Registration Statement to which the Claim relates. The failure
to deliver written notice to the indemnifying party within a reasonable time of
the commencement of any such action shall not relieve such indemnifying party of
any liability to the Indemnified Person or Indemnified Party under this Section
6, except to the extent that the indemnifying party is prejudiced in its ability
to defend such action. The indemnification required by this Section 6 shall be
made by periodic payments of the amount thereof during the course of the
investigation or defense, as such expense, loss, damage or liability is incurred
and is due and payable.

               7. CONTRIBUTION. To the extent any indemnification by an
indemnifying party is prohibited or limited by law, the indemnifying party
agrees to make the maximum contribution with respect to any amounts for which it
would otherwise be liable under Section 6 to the fullest extent permitted by
law; provided, however, that (a) no contribution shall be made under
circumstances where the maker would not have been liable for indemnification
under the fault standards set forth in Section 6, (b) no seller of Registrable
Securities guilty of fraudulent misrepresentation (within the meaning of 



                                       8
<PAGE>   9

Section 11(f) of the Securities Act) shall be entitled to contribution from any
seller of Registrable Securities who was not guilty of such fraudulent
misrepresentation and (c) contribution by any seller of Registrable Securities
shall be limited in amount to the amount by which the net amount of proceeds
received by such seller from the sale of such Registrable Securities exceeds the
purchase price paid by such seller for such Registrable Securities.

               8. REPORTS UNDER EXCHANGE ACT. With a view to making available to
the Investors the benefits of Rule 144 promulgated under the Securities Act or
any other similar rule or regulation of the SEC that may at any time permit the
Investors to sell securities of the Company to the public without registration
("Rule 144"), the Company agrees to:

               (a) make and keep public information available, as those terms
are understood and defined in Rule 144;

               (b) file with the SEC in a timely manner all reports and other
documents required of the Company under the Securities Act and the Exchange Act;

               (c) furnish to each Investor so long as such Investor owns
Registrable Securities, promptly upon request, (i) a written statement by the
Company that it has complied with the reporting requirements of Rule 144, the
Securities Act and the Exchange Act, (ii) a copy of the most recent annual or
quarterly report of the Company and such other reports and documents so filed by
the Company and (iii) such other information as may be reasonably requested to
permit the Investors to sell such securities pursuant to Rule 144 without
registration; and

               (d) if at any time the Company is not required to file such
reports with the SEC under Sections 13 or 15(d) of the Exchange Act, to use its
best efforts to make publicly available other information, upon the request of
an Investor, so long as is necessary to permit publication by brokers and
dealers of quotations for the Common Stock and sales of the Registrable
Securities in accordance with Rule 15c2-11 under the Exchange Act.

               9. ASSIGNMENT OF THE REGISTRATION RIGHTS. The rights to have the
Company register Registrable Securities pursuant to this Agreement shall be
automatically assigned by the Investors to any transferee of all or any portion
of such securities (or all or any portion of the Preferred Shares or Warrants)
only if: (a) the Investor agrees in writing with the transferee or assignee to
assign such rights, and a copy of such agreement is furnished to the Company
within a reasonable time after such assignment, (b) the Company is, within a
reasonable time after such transfer or assignment, furnished with written notice
of (i) the name and address of such transferee or assignee and (ii) the
securities with respect to which such registration rights are being transferred
or assigned, (c) immediately following such transfer or assignment the further
disposition of such securities by the transferee or assignee is restricted under
the Securities Act and applicable state securities laws, and (d) at or before
the time the Company received the written notice contemplated by clause (b) of
this sentence the transferee or assignee agrees in writing with the Company to
be bound by all of the provisions contained herein. In connection with any such
transfer the Company shall, at its sole cost and expense, promptly after such
assignment take such actions as shall be reasonably acceptable to the Initial
Investor and such transferee to assure that the Registration Statement and
related prospectus are available for use by such transferee for sales of the
Registrable Securities in respect of which the rights to registration have been
so assigned.

               10. AMENDMENT OF REGISTRATION RIGHTS. Any provision of this
Agreement may be amended and the observance thereof may be waived (either
generally or in a particular instance and either retroactively or
prospectively), only with the written consent of the Company and Investors who
hold a majority in interest of the Registrable Securities. Any amendment or
waiver effected in accordance with this Section 10 shall be binding upon each
Investor and the Company.

               11.    MISCELLANEOUS.

               (a) A person or entity is deemed to be a holder of Registrable
Securities whenever such person or entity owns of record such Registrable
Securities. If the Company receives conflicting instructions, notices or
elections from two or more persons or entities with respect to the same
Registrable Securities, the Company shall act upon the basis of instructions,
notice or election received from the registered owner of such Registrable
Securities.


                                       9
<PAGE>   10


               (b) Notices required or permitted to be given hereunder shall be
in writing and shall be deemed to be sufficiently given when personally
delivered (by hand, by courier, by telephone line facsimile transmission or
other means) or sent by certified mail, return receipt requested, properly
addressed and with proper postage pre-paid (i) if to the Company, at American
Technology Corporation, 13114 Evening Creek Dr. South, San Diego, California
92128, Attention: Chief Financial Officer, telephone line facsimile transmission
no. (619) 679-0545, (ii) if to the Initial Investor,
___________________________________, with a copy to__________________________
and (iii) if to any other Investor, at such address as such Investor shall have
provided in writing to the Company, or at such other address as each such party
furnishes by notice given in accordance with this Section 11(b), and shall be
effective, when personally delivered, upon receipt and, when so sent by
certified mail, four days after deposit with the United States Postal Service.

               (c) Failure of any party to exercise any right or remedy under
this Agreement or otherwise, or delay by a party in exercising such right or
remedy, shall not operate as a waiver thereof.

               (d) This Agreement shall be enforced, governed by and construed
in accordance with the laws of the State of New York applicable to agreements
made and to be performed entirely within such State. In the event that any
provision of this Agreement is invalid or unenforceable under any applicable
statute or rule of law, then such provision shall be deemed inoperative to the
extent that it may conflict therewith and shall be deemed modified to conform
with such statute or rule of law. Any provision hereof which may prove invalid
or unenforceable under any law shall not affect the validity or enforceability
of any other provision hereof.

               (e) This Agreement constitutes the entire agreement among the
parties hereto with respect to the subject matter hereof. There are no
restrictions, promises, warranties or undertakings, other than those set forth
or referred to herein. This Agreement supersedes all prior agreements and
understandings among the parties hereto with respect to the subject matter
hereof.

               (f) Subject to the requirements of Section 9 hereof, this
Agreement shall inure to the benefit of and be binding upon the successors and
assigns of each of the parties hereto.

               (g) All pronouns and any variations thereof refer to the
masculine, feminine or neuter, singular or plural, as the context may require.

               (h) The headings in this Agreement are for convenience of
reference only and shall not limit or otherwise affect the meaning hereof.

               (i) The Company acknowledges that any failure by the Company to
perform its obligations under this Agreement, including, without limitation, the
Company's obligations under Section 3(n), or any delay in such performance could
result in damages to the Investors and the Company agrees that, in addition to
any other liability the Company may have by reason of any such failure or delay,
the Company shall be liable for all direct and consequential damages caused by
any such failure or delay.

               (j) This Agreement may be executed in two or more counterparts,
each of which shall be deemed an original but all of which shall constitute one
and the same agreement. This Agreement, once executed by a party, may be
delivered to the other party hereto by telephone line facsimile transmission of
a copy of this Agreement bearing the signature of the party so delivering this
Agreement.
               IN WITNESS WHEREOF, the parties have caused this Agreement to be
duly executed by their respective officers thereunto duly authorized as of day
and year first above written.


                                       AMERICAN TECHNOLOGY CORPORATION
                                       By  /s/ ROBERT PUTNAM
                                         ------------------------------
                                       Name: Robert Putnam
                                       Title:  President and CEO
                                       INVESTOR
                                       By
                                         ------------------------------
                                           Name:
                                           Title:




                                       10

<PAGE>   1
                                                                     EXHIBIT 5.1


                                  (Letterhead)
                                BRASHER & COMPANY
                                ATTORNEYS AT LAW
                          90 Madison Street, Suite 707
                             Denver, Colorado 80206
                            Telephone (303) 355-3000
                            Facsimile (303) 355-3063


                               September 18, 1997


Board Of Directors
AMERICAN TECHNOLOGY CORPORATION
13114 Evening Creek Drive South
San Diego, California  92128

        Re:    Registration Statement on Form S-3
               1,629,899 Shares of Common Stock for Selling Security Holders
               -------------------------------------------------------------

Gentlemen:

        We have acted as a counsel to American Technology Corporation, a
Delaware corporation ("Company"), in connection with the preparation and filing
with the U.S. Securities and Exchange Commission ("Commission") under the
Securities Act of 1933, as amended ("Act"), of the Company's registration
statement on Form S-3 (together with all exhibits, supplements and amendments,
the "Registration Statement"). The Registration Statement relates to the
registration under the Act of a maximum of 1,629,899 shares of the Company's
common stock, $.00001 par value ("Common Stock"), acquired upon the conversion
of shares of the Company's Series A Convertible Preferred Stock and certain
common stock purchase warrants, and which may be sold from time to time by
certain shareholders of the Company, as described in the Registration Statement.

        In connection with the opinions herein expressed, we have reviewed the
Registration Statement and included prospectus, and have examined and relied
upon, as to factual matters, originals or certified or photostatic copies of
such corporate records, including, without limitation, minutes of the Board of
Directors and other instruments, certificates of corporate officers and such
other documents as we have deemed necessary or appropriate for the opinions
expressed herein. In making such examinations, we have assumed the genuineness
of all signatures, the legal capacity of natural persons, the authenticity of
documents submitted to us as originals, the conformity to original documents of
documents submitted to us as certified or photostatic copies, and the
authenticity of originals of such photostatic copies.

        We have examined and relied upon, as to matters of law, such statutes,
rules and judicial precedents and such other considerations of law as we, in our
judgment, have deemed necessary or appropriate for the purposes of rendering the
opinions expressed herein. For the purpose of this opinion, we have expressly
assumed that shares covered by the Registration Statement will be sold in the
manner contemplated in the Registration Statement.


<PAGE>   2
Board of Directors
AMERICAN TECHNOLOGY CORPORATION
September 18, 1997
Page 2 of 2



        Based upon and in reliance upon the foregoing, and subject to the
qualifications and limitations herein set forth, we are of the opinion that the
shares of Common Stock covered by the Registration Statement have been legally
issued and are fully paid and nonassessable.

        This opinion is limited to the laws of the United States of America and
the General Corporation Law of Delaware, and we express no opinion with respect
to the laws of any other jurisdiction.

        We consent to the filing of this opinion with the Commission as an
exhibit to the Registration Statement and to all references made to our firm in
the Registration Statement. However, in rendering this opinion, we do not hereby
admit that we are acting within the category of persons whose consent is
required under Section 7 of the Act or the rules and regulations of the
Commission under the Act.

        This opinion is being delivered and is intended for use solely in regard
to the transactions contemplated by the Registration Statement and may not be
used, circulated, quoted in whole or in part or otherwise referred to for any
purpose without our prior written consent. This opinion is based upon our
knowledge of law and facts as of its date. We assume no duty to communicate to
you with respect to any matter which comes to our attention hereafter.

                                           Yours very truly,

                                           /s JOHN D. BRASHER, JR..
                                           John D. Brasher Jr.
                                           For the Firm




<PAGE>   1
                                                                    EXHIBIT 23.1



                                   CONSENT OF
                    INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS


American Technology Corporation
San Diego, California

We hereby consent to the incorporation by reference in the Prospectus
constituting a part of this Registration Statement of our report dated November
19, 1996, relating to the financial statements of American Technology
Corporation appearing in the Company's Annual Report on Form 10-KSB for the
fiscal year ended September 30, 1996.

We also consent to the reference to us under the caption "Experts" in the
Prospectus.


                                                   /s/ BDO SEIDMAN, LLP
                                                   BDO SEIDMAN, LLP


Denver, Colorado
September 19, 1997



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