SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* WESTON PRESIDIO SERVICE CO LLC (Last) (First) (Middle) (Street) (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 07/09/2003	3. Issuer Name and Ticker or Trading Symbol DIGITAL THEATER SYSTEMS INC [ DTSI ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person* WESTON PRESIDIO SERVICE CO LLC (Last) (First) (Middle) (Street) (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* LAZARUS MICHAEL P (Last) (First) (Middle) (Street) (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* WESTON PRESIDIO CAPITAL II LP (Last) (First) (Middle) (Street) (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* WESTON PRESIDIO CAPITAL MANAGEMENT II LP (Last) (First) (Middle) (Street) (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* CRONIN MICHAEL F (Last) (First) (Middle) (Street) (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. Immediately following the closing of the inital public offering of the Issuer's Common Stock, all outstanding shares of preferred stock will be redemeed by the Issuer.

4. This warrant will be automatically exercised for shares of common stock upon the closing of the initial public offering of the Issuer's Common Stock pursuant to the cashless exercise provision contained therein, based on the price to the public in such offering.

5. The Designated Filer is executing this report on behalf of Weston Presidio Capital II, L.P., Weston Presidio Capital Management II, L.P., Michael Cronin and Michael Lazarus (collectively, the "Reporting Persons"), each of whom has authorized it to do so; each of the Reporting Persons disclaims beneficial ownership of the Issuer's securities to the extent it exceeds such Reporting Person's pecuniary interest.

6. The amounts shown in Table I and Table II represent the beneficial ownership of the Issuer's equity securities by Weston Presidio Capital II, L.P.

7. The amounts shown in Table I and Table II represent the beneficial ownership of the Issuer's equity securities by Weston Presidio Capital II, L.P., a portion of which may be deemed attributable to Weston Presidio Capital Management II, L.P. because it is the sole general partner of Weston Presidio Capital II, L.P. The actual pro rata portion of such beneficial ownership that may be deemed to be attributable to such Reporting Person is not readily determinable because it is subject to several variables.

8. The amounts shown in Table I and Table II represent the beneficial ownership of the Issuer's equity securities by Weston Presidio Capital II, L.P., a portion of which may be deemed attributable to Michael Lazarus because he is a managing partner of Weston Presidio Capital Management II, L.P., the general partner of Weston Presidio Capital II, L.P. The actual pro rata portion of such beneficial ownership that may be deemed to be attributable to such Reporting Person is not readily determinable because it is subject to several variables.

9. The amounts shown in Table I and Table II represent the beneficial ownership of the Issuer's equity securities by Weston Presidio Capital II, L.P., a portion of which may be deemed attributable to Michael Cronin because he is a managing partner of Weston Presidio Capital Management II, L.P., the general partner of Weston Presidio Capital II, L.P. The actual pro rata portion of such beneficial ownership that may be deemed to be attributable to such Reporting Person is not readily determinable because it is subject to several variables.

No securities are beneficially owned.

	WESTON PRESIDIO SERVICE COMPANY, LLC, By: /s/ Therese Mrozek, Chief Operating Officer	07/08/2003
	Michael Lazarus	07/04/2003
	Therese Mrozek	07/04/2003
	Therese Mrozek	07/04/2003
	Michael Cronin	07/04/2003
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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