Velodyne Acoustics DLS-3750 User Manual

"If you know subwoofers, you know about Velodyne."

- Corey Greenberg

Home Theater Technology/February 1995

"It delivered room-shaking bass and dramatically demonstrated the
effectiveness of a single subwoofer placed to one side of the room."

- Julian Hirsh
Stereo Review, January 1997

DLS-3500/DLS-3750/

"Notes were distinct, not blurry".

Home Theater, May 2002

Other Velodyne Subwoofer Products:

CHT Series

CHT-8
CHT-10
CHT-12
CHT-15

CHT Front Row System

VX-10

Deco System

Deco System

Deco Satellites

Velodyne Acoustics, Inc.

345 Digital Drive

Morgan Hill, CA 95037

408.465-2800 voice

408.779-9227 fax

http://www.velodyne.com

Service E-mail: [e-mail]

Product E-mail: [e-mail]

Technical E-mail: [e-mail]

DLS-4000

Owner's Manual

SPL Series

SPL-800
SPL-1000
SPL-1200

SPL-523 Satellites

HGS Series II

HGS-10

HGS-12

HGS-15 THX Ultra 2
HGS-18 THX Ultra 2

Audio/Video Subwoofer System

Printed on recycled paper.

63-DLS RevA 18APR03

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

SPECIFICATIONS DLS-3500 DLS-3750 DLS-4000

Cabinet (H,W,D) 15" x 12" x 18" 16.25" x 15" x 21" 18" x 15" x 21"

Frequency Response 35Hz-140Hz 28Hz-120Hz 25Hz-120Hz (±3 dB)

Caution

To reduce the risk of electric shock, do not remove cover (or back). No user-serviceable parts inside.
Refer servicing to qualified service personnel.

The lighting flash with arrowhead symbol is intended to alert the user to the presence of uninsulated
"dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a
risk of electric shock to persons.

The exclamation point symbol is intended to alert the user to the presence of important operating and
maintenance (servicing) instructions in the literature accompanying the subwoofer.

1. Read Instructions -- All safety and operating instructions should be read before the subwoofer is operated.

2. Retain Instructions -- The safety and operating instructions should be retained for future reference.

3. Heed Warnings -- All warnings on the subwoofer and in the operating instructions should be adhered to.

4. Follow Instructions -- All operating and use instructions should be followed.

5. Water and Moisture -- The subwoofer should not be used near water -- for example, near a bathtub, washbowl,
kitchen sink, laundry tub, in a wet basement, near a swimming pool or the like.

6. Carts and Stands -- The subwoofer should be used only with a cart or stand recommended by the manufacturer.

7. Wall or Ceiling Mounting -- The subwoofer should be mounted to a wall or ceiling only as recommended by
the manufacturer.

8. Ventilation -- The subwoofer should be situated so that its location or position does not interfere with its proper
ventilation. For example, the subwoofer should not be situated on a bed, sofa, rug, or similar surface that may
block the ventilation openings; or placed in a built-in installation such as a bookcase or cabinet that may impede
the flow of air through the ventilation openings.

9. Heat -- The subwoofer should be situated away from heat sources such as radiators, heat registers, stoves,
or other subwoofers that produce heat.

10. Power Sources -- The subwoofer should be connected to a power supply only of the type described in the
operating instructions or as marked on the subwoofer.

11. Power-Cord Protection -- Power-supply cords should be routed so that they are not likely to be walked on or
pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience
receptacles, and the point at which they exit from the subwoofer.

12. "Caution: To prevent electrical shock, match wide blade of plug to wide slot, fully inserted." "Attention: Pour eviter
les chocs electriques, introduire lame la plus large de la fiche dans la borne correspondante de la prise et
pousser jusqu' au fond".

13. Cleaning -- The subwoofer should be cleaned only as recommended by the manufacturer.

14. Nonuse Periods -- The power cord of the subwoofer should be unplugged from the outlet when left unused for
a long period of time.

15. Object and Liquid Entry -- Care should be taken so that objects do not fall and liquids are not spilled onto the
enclosure.

16. Damage Requiring Service -- The subwoofer should be serviced by qualified service personnel when:
a. The power-supply cord or plug has been damaged.
b. Objects have fallen or liquid has been spilled into the subwoofer.
c. The subwoofer has been exposed to rain.
d. The subwoofer does not appear to operate normally or exhibits a marked change in performance.
e. The subwoofer has been dropped or damaged.

17. Servicing -- The user should not attempt to service the subwoofer beyond what is described in the operating
instructions.

All other servicing should be referred to qualified service personnel.

High Pass Crossover Passive 85Hz Passive 85Hz 80Hz or 100Hz
(6 dB/octave slope)

Low Pass Crossover 40Hz -120Hz (12 dB/octave, 24 dB ultimate)

Amplifier 350 watts/ 375 watts/ 400 watts/
(Class A/B) 160 watts RMS 175 watts RMS 200 watts RMS

power power power

Woofer 8" forward firing 10" forward firing 12" forward firing

(6.3" piston (8.2" piston (9.9" piston
diameter) diameter) diameter)

Magnet 40 oz. 40 oz. 55 oz.
Voice Coil 2" two-layer copper 2" four-layer copper 2" four-layer copper

Inputs Line-level and speaker-level

Outputs Line-level and speaker-level
Warranty Two years (parts and labor)

Weight 44 lbs. (approx.) 53 lbs. (approx.) 60 lbs. (approx.)

Specifications are subject to change without notice.

FOR YOUR RECORDS. . .
DATE PURCHASED
DEALER
SERIAL #

* NOTE: Please complete and return your warranty card within ten (10) days or

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