Velodyne Acoustics DLS-3500R User Manual

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-R Series

• DLS-3500R

• DLS-3750R

• DLS-4000R

• DLS-5000R

User's Manual

DSP-Controlled Home Theater Subwoofer

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 aler t 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.

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Congratulations!

Congratulations on your purchase of a Velodyne Distortion Limiting
SystemTM Remote (DLSTM-R) subwoofer. This system represents the
state-of-the-art in low frequency reproduction. Read and follow the
instructions below to insure safe and proper system operation.

• Anti-clipping circuit

• Over excursion protection

• Slot loaded design

Installation

Warning!

To prevent fire or shock hazard, do not expose this equipment to rain
or moisture. To avoid electrical shock, do not open speaker enclosure
or amp chassis cover. Please observe all warnings on the equipment
itself. There are no user serviceable parts inside. Please refer all
service questions to your authorized Velodyne dealer.

Prior to Installation

Please unpack the system carefully. Remove all staples used to seal
the carton as they can scratch the cabinet. Please save the carton
and all packaging materials for future use. Record the serial number
in the space provided on the warranty card for future reference.

Product Features and Controls

• DSP-controlled

• 4 selectable presets for customized listening mode

• Night-mode setting

• Mute control

• Built-in 160 watt (RMS) power amplifier (DLS-3500R)

• Built-in 185 watt (RMS) power amplifier (DLS-3750R)

• Built-in 200 watt (RMS) power amplifier (DLS-4000R)

• Built-in 1000 watt (RMS) power amplifier (DLS-5000R)

• Adjustable (40 to 120 Hz) low-pass crossover with Subwoofer

Direct setting

• Speaker-level inputs and outputs

• 85 Hz high-pass crossover

• Line-level inputs

• Signal sensing auto turn on/off with bypass option

• Variable volume control

• Selectable phase control (0, 90, 180, or 270 degrees)

• Dual staggered low-pass crossover; 12 dB/octave initial,

24 dB/octave ultimate

Your new subwoofer system provides for a number of installation
options. Read all the installation information below in order
to determine which installation option is best for your system.
Remember to perform all installation procedures with system power
turned off.

Figure 1. DLS-3500R, DLS-3750R and DLS-4000R
Rear Panel Connections

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Rear Panel Connections

Figure 1 shows the connections on the rear panel of the DLS-3500R,
DLS-3750R and DLS-4000R. Figure 2 shows the connections on the
rear panel of the DLS-5000R.

Following are brief descriptions of the connections described in
Figures 1 and 2. More detail on these connections can be found
on the next page.

(1) LOW-PASS CROSSOVER
Use this knob to select the high-frequency range at which you

wish to cut off the signal to the subwoofer. When the knob is
turned all the way to the left, the Subwoofer Direct feature is
invoked and the subwoofer plays all frequencies up to 200 Hz.

(2) VOLUME Control

This control allows you to balance the output from the subwoofer

to the main speakers in your system. This control should be
set to achieve similar volume level from between both the main
speakers and subwoofer. When pressing volume up or down,
the speed at which the power light blinks indicates subwoofer
volume - the faster the blinking, the louder the unit plays. After
the volume blinking stops, the unit will blink out the actual volume
number. Slower blinks represent tens, and faster blinks represent
ones. So, for example, if the volume were set at 34, after the rapid
blinking stopped you would observe three slow blinks followed
by four faster blinks, indicating a volume of 34.

Note: Volume is also controllable by using the supplied remote,

when defaults are restored. The default is 35 out of 100.

Figure 2. DLS-5000R Rear Panel Connections

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(3) AUTO ON/OFF Switch

Use this switch to select between auto-on (active) and constant
on (inactive) operation.

(4) LINE OUTPUT
Connect these jacks to the LINE IN preamp input to use the

DLS-R’s internal high pass crossover. See below for a more
detailed explanation of this crossover.

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