<PAGE>
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. 3)*
Digital Sound Corporation
(Name of Issuer)
Common Stock No Par Value
(Title of Class of Securities)
253911101
(CUSIP Number)
*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 253911101 13G PAGE 2 OF 23 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Oak Investment Partners III, A Limited Partnership
06-1088899
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF 1,948,322 Shares of Common Stock
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
Not Applicable
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING 1,948,322 Shares of Common Stock
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
Not Appliable
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
1,948,322 Shares of Common Stock
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
8.5%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
PN
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 253911101 13G PAGE 3 OF 23 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Oak Associates III, Limited Partnership
06-1093520
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF Not Applicable
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
1,948,322 Shares of Common Stock
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING Not Applicable
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
1,948,322 Shares of Common Stock
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
1,948,322 Shares of Common Stock
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
8.5%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
PN
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 253911101 13G PAGE 4 OF 23 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Oak Investment Partners V, Limited Partnership
06-1093520
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF 2,636,799 Shares of Common Stock
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
Not applicable
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING 2,636,799 Shares of Common Stock
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
Not applicable
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
2,636,799 Shares of Common Stock
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
11.6%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
PN
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 253911101 13G PAGE 5 OF 23 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Oak Associates V, Limited Parnership
06-1332464
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF Not Applicable
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
2,636,799 Shares of Common Stock
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING Not Applicable
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
2,636,799 Shares of Common Stock
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
2,636,799 Shares of Common Stock
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
11.6%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
PN
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 253911101 13G PAGE 6 OF 23 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Oak V Affiliates Fund, Limited Partnership
06-1334685
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF 59,315 Shares of Common Stock
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
Not Applicable
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING 59,315 Shares of Common Stock
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
Not Applicable
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
59,315 Shares of Common Stock
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
0.3%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
PN
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 253911101 13G PAGE 7 OF 23 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Oak V Affiliates
06-1334686
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF Not Applicable
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
59,315 Shares of Common Stock
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING Not Applicable
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
59,315 Shares of Common Stock
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
59,315 Shares of Common Stock
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
0.3%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
PN
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 253911101 13G PAGE 8 OF 23 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Oak Management Corporation
06-0990851
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
Delaware
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF Not Applicable
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
4,644,436 Shares of Common Stock
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING Not Applicable
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
4,644,436 Shares of Common Stock
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
4,644,436 Shares of Common Stock
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
20.3%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
CO
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 253911101 13G PAGE 9 OF 23 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Bandel L. Carano
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
United States
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF Not applicable
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
4,644,436 Shares of Common Stock
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING Not applicable
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
4,644,436 Shares of Common Stock
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
4,644,436 Shares of Common Stock
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
20.3%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IN
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 253911101 13G PAGE 10 OF 23 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Gerald R. Gallagher
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
United States
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF Not applicable
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
4,644,436 Shares of Common Stock
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING Not applicable
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
4,644,436 Shares of Common Stock
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
4,644,436 Shares of Common Stock
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
20.3%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IN
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 253911101 13G PAGE 11 OF 23 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Edward F. Glassmeyer
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
United States
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF Not Applicable
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
4,644,436 Shares of Common Stock
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING Not Applicable
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
4,644,436 Shares of Common Stock
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
4,644,436 Shares of Common Stock
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
20.3%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IN
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 253911101 13G PAGE 12 OF 23 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Frederick W. Harman
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
United States
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF Not Applicable
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
4,644,436 Shares of Common Stock
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING Not Applicable
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
4,644,436 Shares of Common Stock
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
4,644,436 Shares of Common Stock
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
20.3%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IN
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 253911101 13G PAGE 13 OF 23 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Ann H. Lamont
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
United States
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF Not Applicable
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
4,644,436 Shares of Common Stock
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING Not Applicable
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
4,644,436 Shares of Common Stock
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
4,644,436 Shares of Common Stock
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
20.3%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IN
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
- ----------------------- ---------------------
CUSIP NO. 253911101 13G PAGE 14 OF 23 PAGES
- ----------------------- ---------------------
- ------------------------------------------------------------------------------
NAME OF REPORTING PERSON
1 S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Eileen M. More
- ------------------------------------------------------------------------------
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
2 (a) [_]
(b) [_]
- ------------------------------------------------------------------------------
SEC USE ONLY
3
- ------------------------------------------------------------------------------
CITIZENSHIP OR PLACE OF ORGANIZATION
4
United States
- ------------------------------------------------------------------------------
SOLE VOTING POWER
5
NUMBER OF Not Applicable
SHARES -----------------------------------------------------------
SHARED VOTING POWER
BENEFICIALLY 6
4,644,436 Shares of Common Stock
OWNED BY
-----------------------------------------------------------
EACH SOLE DISPOSITIVE POWER
7
REPORTING Not Applicable
PERSON -----------------------------------------------------------
SHARED DISPOSITIVE POWER
WITH 8
4,644,436 Shares of Common Stock
- ------------------------------------------------------------------------------
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9
4,644,436 Shares of Common Stock
- ------------------------------------------------------------------------------
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10
[_]
- ------------------------------------------------------------------------------
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
11
20.3%
- ------------------------------------------------------------------------------
TYPE OF REPORTING PERSON*
12
IN
- ------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
Page 15 of 23 pages
Schedule 13G
Amendment No. 3
Common Stock, No Par Value
CUSIP No. 253911101
Item 1(a) Name of Issuer:
Digital Sound Corporation
Item 1(b) Address of Issuer's Principal Executive Offices:
6307 Carpinteria Avenue
Carpinteria, CA 93013
Item 2(a) Name of Person filing:
Oak Investment Partners III A Limited Partnership
Oak Associates III, Limited Partnership
Oak Investment Partners V, Limited Partnership
Oak Associates V, Limited Partnership
Oak V Affiliates Fund, Limited Partnership
Oak V Affiliates
Oak Management Corporation
Bandel L. Carano
Gerald R. Gallagher
Edward F. Glassmeyer
Fredric W. Harman
Ann H. Lamont
Eileen M. More
Item 2(b) Address of Principal Business Office or, if none, Residence:
c/o Oak Management Corporation
One Gorham Island
Westport, CT 06880
Item 2(c) Citizenship:
Please refer to Item 4 on each cover sheet for each filing person
Item 2(d) Title of Class of Securities:
Common stock, no par value
Item 2(e) CUSIP Number: 253911101
Item 3 Not Applicable.
Item 4 Ownership.
<PAGE>
The approximate percentages of shares of Common Stock reported as
beneficially owned by the Reporting Entities is based upon 20,093,241 shares
outstanding as of October 31, 1996, as reported in the Issuer's Quarterly Report
on Form 10-Q for the fiscal quarter ended September 30, 1996, plus shares
issuable upon conversion or exercise of Series A Preferred Stock and options
described in the following two sentences. Amounts shown as beneficially owned
include currently exercisable options to purchase 35,465 shares of Common Stock,
38,665 shares of Common Stock, and 870 shares of Common Stock which may be
deemed to be held by Bandel L. Carano on behalf of Oak Investment Partners III A
Limited Partnership, Oak Investment Partners V, Limited Partnership, and Oak V
Affiliates Fund, Limited Partnership, respectively. Amounts shown as
beneficially owned also include 2,573,684 shares and 57,895 shares issuable upon
conversion of Series A Preferred Stock held by Oak Investment Partners V,
Limited Partnership, and Oak V Affiliates Fund, Limited Partnership,
respectively.
Please see Items 5, 6, 7, 8, 9 and 11 for each cover sheet for each filing
entity.
Item 5 Ownership of Five Percent or Less of a Class.
Not applicable
Item 6 Ownership of More than Five Percent on Behalf of Another Person.
Not applicable
Item 7 Identification and Classification of the Subsidiary Which
Acquired the Security Being Reported on By the Parent Holding
Company.
Not applicable
Item 8 Identification and Classification of Members of the Group.
Not applicable
Item 9 Notice of Dissolution of Group.
Not applicable
Item 10 Certification.
Not applicable
<PAGE>
Signature
- ---------
After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.
Dated February 13, 1997
Oak Investment Partners III
A Limited Partnership
By: Oak Associates III,
Limited Partnership,
As General Partner
By: /s/ Edward F. Glassmeyer
-------------------------------
General Partner
Oak Associates III, Limited Partnership
By: /s/ Edward F. Glassmeyer
-------------------------------
General Partner
Oak Investment Partners V,
Limited Partnership
By: Oak Associates V,
Limited Partnership,
As General Partner
By: /s/ Edward F. Glassmeyer
-------------------------------
General Partner
Oak Associates V, Limited Partnership
By: /s/ Edward F. Glassmeyer
-------------------------------
General Partner
<PAGE>
Oak V Affiliates Fund, Limited Partnership
By: /s/ Edward F. Glassmeyer
-------------------------------
Oak V Affiliates,
As General Partner
By: /s/ Edward F. Glassmeyer
------------------------------
General Partner
Oak V Affiliates
By: /s/ Edward F. Glassmeyer
-----------------------------
General Partner
<PAGE>
OAK MANAGEMENT CORPORATION
By: /s/ Edward F. Glassmeyer
------------------------------------
Name: Edward F. Glassmeyer
Title: President
/s/ Bandel L. Carano
------------------------------------
Bandel L. Carano
/s/ Fredric W. Harman
------------------------------------
Fredric W. Harman
/s/ Gerald R. Gallagher
------------------------------------
Gerald R. Gallagher
/s/ Edward F. Glassmeyer
------------------------------------
Edward F. Glassmeyer
/s/ Ann H. Lamont
------------------------------------
Ann H. Lamont
/s/ Eileen M. More
------------------------------------
Eileen M. More
<PAGE>
INDEX TO EXHIBITS
-----------------
Page
----
EXHIBIT A Agreement of Reporting Persons 21
<PAGE>
Exhibit A
---------
Each of the undersigned hereby agrees that Amendment No. 3 to the Schedule
13G filed on the date hereof with respect to the shares of Common Stock of
Digital Sound Corporation has been filed on behalf of the undersigned.
Signature:
- ----------
Dated February 13, 1997
Oak Investment Partners III
A Limited Partnership
By: Oak Associates III,
Limited Partnership,
As General Partner
By: /s/ Edward F. Glassmeyer
-----------------------------
General Partner
Oak Associates III, Limited Partnership
By: /s/ Edward F. Glassmeyer
------------------------------
General Partner
Oak Investment Partners V,
Limited Partnership
By: Oak Associates V,
Limited Partnership,
As General Partner
By: /s/ Edward F. Glassmeyer
-------------------------------
General Partner
Oak Associates V, Limited Partnership
By: /s/ Edward F. Glassmeyer
-------------------------------
General Partner
<PAGE>
Oak V Affiliates Fund, Limited Partnership
By: Oak V Affiliates,
As General Partner
By: /s/ Edward F. Glassmeyer
------------------------------
General Partner
Oak V Affiliates
By: /s/ Edward F. Glassmeyer
-----------------------------
General Partner
<PAGE>
OAK MANAGEMENT CORPORATION
By: /s/ Edward F. Glassmeyer
------------------------------------
Name: Edward F. Glassmeyer
Title: President
/s/ Bandel L. Carano
------------------------------------
Bandel L. Carano
/s/ Fredric W. Harman
------------------------------------
Fredric W. Harman
/s/ Gerald R. Gallagher
------------------------------------
Gerald R. Gallagher
/s/ Edward F. Glassmeyer
------------------------------------
Edward F. Glassmeyer
/s/ Ann H. Lamont
------------------------------------
Ann H. Lamont
/s/ Eileen M. More
------------------------------------
Eileen M. More
