U S E R ’ S
M A N U A L
Audio/Video Subwoofer
Table of Contents
Congratulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Crossovers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Interconnect Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Care of Your Subwoofer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Protection Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Troubleshooting and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Velodyne Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
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Congr atulations
Congratulations on your purchase of a Velodyne subwoofer system. This system represents the
state of the art in home audio reproduction and will provide you with years of listening pleasure
when properly cared for. Read and follow this instruction manual to insure safe and proper
system connection and operation.
Caution!
Please observe the following instructions to insure safe and proper system operation.
Note: Do not leave unit in direct sunlight or use in high humidity environments!!!
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. This unit is heavy. Use caution when lifting or moving to
avoid injury. Please save the carton and all packaging materials for future use. Packing this unit
in any other carton may result in severe damage when shipping. Record the serial number in
the space provided on page 12 for future reference.
Product Features
• 10” (7.65” piston diameter) subwoofer with 1.6” high-temp voice coil
and 32 ounce motor structure
• High efficiency Class D amplifier
• Adjustable (50 to 200 Hz) low-pass crossover @ 12 dB/octave
• Line-level (RCA) inputs
• Speaker-level inputs and outputs with spring loaded terminals
• Signal sensing auto turn on/off
• Variable volume control
• Selectable phase control (0° or 180°)
• Green power on/ Red power standby mode indicator LED
Prepare for Installation
Your new Velodyne subwoofer 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
to prevent possible damage.
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Placement
Subwoofers operate at extremely low frequencies that are primarily omni-directional. Keep in
mind that frequency response and output level can be drastically influenced by placement,
depending on the acoustic properties of the listening room. Typically, the optimum location for
a subwoofer is tucked away in a corner of your listening room where the greatest output levels
and optimum low frequency extension can be found. The worst location for a subwoofer is far
away from any walls and close to the center of your room. Avoid these locations when possible.
Depending on the room size and type of furnishings in the room, perfect placement may not be
possible. Finding the best location for your environment will likely require some experimentation.
We suggest you experiment with the location during setup to find what sounds best to you when
seated in your typical listening position.
Caution! This subwoofer has electronics built into the cabinet. Do not place the cabinet
next to sources of heat such as furnace registers, radiators, etc., or near sources of
excessive moisture such as evaporative coolers, humidifiers, etc. The power cord should
be routed in such a way that it will not be walked on, pinched, or compressed in any
way that could result in damaging the insulation or wire.
Regardless of where you install your VX-11 subwoofer, it must remain in an upright position
(woofer facing forward). Using, shipping, or otherwise storing the subwoofer in any other
position for an extended period of time may result in damage to the unit not covered
by warranty.
Installation
Inputs
Your new subwoofer is equipped with speaker-level and line-level inputs. Use the LINE LEVEL
jacks when connecting your subwoofer to a pre-amp, signal processor, integrated receiver,
line-level crossover, or receiver with pre-amp level outputs. These devices will often have a Low
Frequency Effects (LFE) jack which is dedicated for subwoofer use. When using the line level
jacks, some receivers may not provide enough signal to have the unit’s auto-on feature operate
properly. Additionally, this lack of signal may also cause the subwoofer to produce less output
than it is capable of.
To alleviate this condition, we recommend the following steps:
1)
If using line level jacks, BOTH THE LEFT AND RIGHT INPUT SHOULD ALWAYS BE USED
– never use just the left or just the right input. If the subwoofer’s input comes from the
LFE channel of your receiver, use a “Y” splitter to divide the single input into two inputs
for the Left and Right subwoofer inputs. This dual male-to-female “Y” splitter can be found
at your local electronics store. If using line level connections from a preamp or signal
processor, use both Left and Right inputs from your preprocessor or preamp and
connect them to the Left and Right inputs on your subwoofer.
2)
If using a receiver with LFE out, be sure the LFE channel is sending adequate signal to
the subwoofer. We recommend setting the subwoofer’s level to the 9 o’clock position
(the 1/4 volume setting) and then adjust the LFE channel on your receiver or processor
to achieve the desired bass output. See your receiver or processor’s owner’s manual for
more information.
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Note: A pair of Velodyne subwoofers is a very common setup and doubles your system’s bass
capability. When using a pair of Velodyne subwoofers in stereo, it is preferable to place each
subwoofer by the speaker of the corresponding channel. In this case you may have to use more
than one “Y” splitter.
The SPEAKER LEVEL jacks connect directly to the speaker outputs of any amplifier, integrated
amplifier, or receiver. Your amplifier section will notice no additional loading effects when you
use these inputs due to their very high impedance. If using the SPEAKER LEVEL inputs, you
DO want to connect both channels, since different bass information might be present in each
channel going to your main speakers.
IMPORTANT!
Do not use both LINE LEVEL and SPEAKER LEVEL connections simultaneously!
Caution! To avoid damage to your main amplifier, be sure to maintain correct polarity
when making all connections - red (positive) to red, and black (negative) to black. Be
sure all connections are tight, and that there are no loose strands or frayed wires.
Volume Control
This control allows you to balance the output from the subwoofer to the main
speakers/amplifier in your system. This control should be set to achieve similar output levels
from both the main speakers and subwoofer when listening to music. A good starting point for
the volume control is at the 9:00 position.
Low-pass Crossover - 50 to 200 Hz
A loudspeaker driver is incapable of handling all sound reproduction across the entire audio
spectrum by itself. Thus, the crossover splits the frequency spectrum into different pieces,
which are then handed over to individual speaker drivers. Each driver receives only the signal in
its usable frequency range and the distortion in each driver is reduced.
All line level inputs on the subwoofer sum the left and right channels together, with the resulting
signal passing through an adjustable low-pass crossover before being amplified. The crossover
control allows you to adjust the upper limit of the subwoofer’s frequency response from 50 to
200 Hz. The subwoofer’s response will begin rolling off above the frequency you set this control
to. You should set the crossover frequency to obtain a smooth and seamless transition from
the subwoofer to the main speakers in your system. If your main speakers are smaller units
with limited low frequency output, you may wish to choose a higher frequency (such as 100 -
120 Hz) than you would with larger speakers which have greater low frequency output. With
larger speakers, you might start with this control set lower, such as 80 Hz.
Phase Adjustment - 0°/180°
This control allows you to “reverse” the phase of the subwoofer’s output signal 180° to correct
for any possible mismatch and resulting cancellation between the subwoofer and your main
speakers/amplifier. To adjust, simply listen to the system with music playing, then ask a friend
to adjust the phase switch from one position to the other and listen for a change in mid-bass
output. The correct position will have a greater amount of apparent mid-bass output.
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For all installations, experiment with the phase switch to determine the setting (0 or 180
degrees) that produces the most mid-bass. If the settings sound similar, we recommend the
“0” position.
Auto Turn on Function
The subwoofer will turn itself on automatically when an audio signal is present. If no signal is
present for approximately eight minutes, the unit will switch to standby mode (Red LED). While
in standby mode, your subwoofer will draw very minimal power.
4
5
6
1
2
3
7
Figure 1. Rear panel inputs, output and control layout.
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1
2
SPEAKER LEVEL OUTPUT terminals
The speaker-level signal to the front speakers is distributed from
these terminals.
SPEAKER LEVEL INPUT terminals
Connect these input terminals to the speaker output terminals
of your amplifier or receiver.
3
4
5
LINE INPUT jacks
Connect these jacks to the LINE OUT jacks of the amplifier.
VOLUME LEVEL knob
Use this knob to adjust the output level of the subwoofer.
Power indicator
Red: Unit is in standby mode.
Green: Unit is in operation mode.
(automatically turns to STANDBY mode if no signal for eight min.)
6
7
LOW-PASS CROSSOVER
Use this knob to select the high-frequency range at which you wish
to cut-off the signal to the subwoofer.
PHASE SWITCH
Use this switch to invert the phase of the subwoofer to create a better
blend with your satellite speakers.
Crossov ers
Receiver/Processor Subwoofer Outputs
The Velodyne subwoofer is designed to operate using the full range audio signal for input when
using the built-in crossover. Many home theater processors/receivers (Dolby Digital™, DTS™,
THX™) have a “subwoofer out” jack (sometimes labeled “LFE”) that is internally filtered, settable
at the receiver/processor, and designed to be used with a powered subwoofer. In some
installations, it may be beneficial to use BOTH the Velodyne crossover and the
receiver/processor crossover, resulting in a steeper ultimate crossover slope. In some rare
cases, combining both an external crossover and the one internal to the subwoofer may result
in low output and increased noise. In these installations you may need to bypass the crossover
in either the processor or your VX-11 subwoofer. Or, simply set one crossover to a higher
frequency (such as 120 Hz) will restore maximum performance.
(Refer to Figure 2a Line-Level Subwoofer Connection Diagram and Figure 2b Speaker-Level
Subwoofer Connection Diagram, pages 7 and 8 for connection diagrams.)
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Interconnect Cables
When installing your new Velodyne subwoofer using the line level connections, you should always
use shielded phono cables. There are many high quality cables available today, most any of
which will work perfectly well. We do recommend that you keep the length of cable as short as
possible to avoid any potential noise problems.
When using speaker level connections, use a high quality quality speaker cable that mates well
with the connectors. Be very careful to avoid any loose strands or frayed wires which may result
in a short, which may damage your equipment. Cables of extremely large size are typically not
required. Extremely large gauge wire may not properly fit in the binding posts, resulting in a
poor connection and possible short circuits.
Care of Your Subwoofer
Your Velodyne subwoofer does not require any regular maintenance. Normal dusting or cleaning
of the surface for appearance purposes is all that is required. We suggest you avoid any harsh
detergents or chemicals when cleaning the cabinet. We recommend using only a damp cloth
for cleaning and to avoid abrasives, detergents, or cleaning solutions which may damage the
finish on the cabinet.
During normal conditions, your new subwoofer may be left on continuously without any
problems. The unit is equipped with a signal-sensing on/off switch that will automatically turn
on the unit when a signal is present at the inputs and turn off the unit after several minutes
when there is no longer any signal at the inputs. If your subwoofer is not to be played for an
extended period of time we recommend you unplug the unit.
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SUBWOOFER OUTPUT JACK
OR LFE
REAR
AMPLIFIER
FRONT
Figure 2a. Line-level subwoofer connection diagram.
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SUBWOOFER OUTPUT JACK
REAR
AMPLIFIER
FRONT
FRONT LEFT SPEAKER
FRONT RIGHT SPEAKER
Figure 2b. Speaker-level subwoofer connection diagram.
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Protection Circuitry
Your new subwoofer is equipped with circuitry to provide maximum performance with
greatest reliability.
The unit is protected against:
1) Overheating the amplifier.
2) Excessive drop in power line voltage.
If either of the above should happen, you should reduce the volume setting or shut the unit off
until normal operating conditions return. You may also want to plug the unit into a different wall
outlet, as dropping power line voltage will be most noticeable under strenuous conditions and
may result in the unit shutting down intermittently.
T roubleshooting and Service
Before seeking service for your amplifier or subwoofer, please re-check all systems. Following
is a simple troubleshooting guide to assist you.
1. Verify that the unit is plugged in and power outlet used is active.
2. Is the unit receiving an input signal from your receiver or processor?
3. Have all controls (volume, crossover, phase, etc.) been properly set?
4. If the unit has been running at high levels, one of the protection circuits may be
engaged. Has the amplifier overheated?
5. Make sure speaker-level wires are firmly attached.
If the protection circuitry is active, the unit may cycle on and off until operating parameters
return to normal. Under more serious conditions, the unit may shut off completely. Normal
operation should return upon cooling, but you may be required to turn the power off and then
on again to reset the unit.
The following conditions require service by a qualified technician:
1. The power cord has become damaged.
2. The unit does not appear to operate normally or exhibits a marked
change in performance.
3. The unit has been exposed to water.
4. Some part of the chassis or circuitry is physically damaged.
Thank you for purchasing a Velodyne VX-11 Subwoofer!
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Specifications
MODEL
VX -11
Woofer
10” forward firing (7.65” piston diameter)
Amplifier (Class D)
Magnet Structrure
Frequency Response
Voice Coil
150 watts Dynamic, 100 watts RMS Power
2 lbs (0.9 Kg)
33 Hz - 140 Hz (+/-3dB)
1.6” copper wound
Cone
Coated fiber
Speaker-Level Pass-Through
Low Pass Crossover
Phase
Full range
50 Hz - 200 Hz
0° or 180°
Auto On/Off
Yes
Removable Grille
Video Shielding
LED Power Indicator
Cabinet Design
Yes
No
Yes
Bass-reflex with built-in power amplifier
15” x 12” x 17” (38 cm x 30 cm x 43 cm)
Cabinet (H/W/D)
(includes grille & controls)
Shipping Weight (approx.)
Warranty
35 lbs. (16 Kg)
Three years electronics (parts and labor)
Five years driver (parts and labor)
Specifications are subject to change without notice.
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Velodyne Products
115-120V
220- 240V
DD® Series
DD-10
MiniVee®
DD® Series
SPLi Series
SPL-800i
MiniVee® 10
DD-10
DD-12
DD-15
DD-12
SPL-1000i
DD-15
Optimum Series
Optimum-8
DD-18
Digital Drive 1812
Signature Edition
DD-18
Digital Drive 1812
Signature Edition
SPL-Ultra Series
SPL-800 Ultra
Optimum-10
Optimum-12
SPL-1000 Ultra
SPL-1200 Ultra
DEQ-R Series
DEQ-8R
CHT-Q Series
CHT-8Q
SMS™-1
SubContractor™
Series
DEQ-10R
DEQ-12R
DEQ-15R
CHT-10Q
CHT-12Q
CHT-15Q
SubContractor™
Series
SC-1250
SC-10
SC-1250
SC-10
SC-12
DLS™-R Series
DLS-3500R
DLS-3750R
DLS-4000R
DLS-5000R
SC-12
Impact Series
Impact-Mini
Impact-10
SC-15
SC-15
SC-IW
SC-IW
SC-IF/IC
SC-IF/IC
Impact-12
SC-600 Amp
SC-602 Amp
SC-600 IW
SC-600 IF/IC
SC-600 Amp
SC-602 Amp
SC-600 IW
SC-600 IF/IC
MicroVee™
SMS™-1
Impact Series
Impact-Mini
Impact-10
Impact-12
VX-11
MicroVee™
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FOR YOUR RECORDS. . .
Date Purchased_________________________________________________________________
Dealer_________________________________________________________________________
Serial #________________________________________________________________________
*NOTE: Please complete and return your warranty card within ten (10) days or
Register. . . ON LINE . . . It’s faster . . . and easier
LIMITED WARRANTY - U.S. AND CANADA ONLY
VELODYNE ACOUSTICS, Inc. (“VELODYNE”) warrants all electronics for a period of three years, drivers for a period
of five years, and full range speakers for a period of five years. All VELODYNE products have a warranty from the
date of purchase against defects in materials and workmanship subject to the following conditions:
1. VELODYNE is not responsible for defects which result from the use of an amplifier or controller other than
the one originally supplied with the unit (subwoofer) or defects which result from modifications or repairs
made by any component of the system by anyone other than a VELODYNE factory authorized
service representative.
2. This warranty is void if any repairs or service covered by the terms of this warranty are made to any
component of the system by anyone other than a VELODYNE factory authorized service representative.
3. VELODYNE is not responsible for damage caused by accidents, abuse, misuse, natural or personal disaster
or unauthorized modification. The VELODYNE products are not intended for professional or commercial use
and VELODYNE is not responsible for damage resulting from such use.
4. The VELODYNE product warranty is limited to units that are purchased from authorized VELODYNE dealers
and finalized within authorized dealer locations.
5. This warranty is nontransferable under any condition.
6. Use of this product outside the U.S. and Canada voids this warranty.
TO OBTAIN SERVICE
Information regarding service may be obtained from the dealer from whom you purchased the unit, or by contacting
VELODYNE customer service. Warranty service must be performed by a VELODYNE factory authorized service
representative within the warranty period set forth above. If VELODYNE determines the unit is defective, VELODYNE
will, at VELODYNE’s option, repair or replace the product at no charge if the product is forwarded prepaid to a factory
authorized service representative. Products forwarded to the factory authorized service representative should be
shipped securely and properly packaged, insured and freight prepaid.
WARRANTY OUTSIDE THE UNITED STATES AND CANADA
The Warranty of this product if it is sold to a consumer outside of the United States or Canada shall comply with
applicable law and shall be the sole responsibility of the distributor that supplied this product. To obtain any applicable
warranty service, please contact the dealer from which you purchased this product, or the distributor that supplied
this product.
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Velodyne Acoustics, Inc.
345 Digital Drive
Morgan Hill, CA 95037
408.465.2800 voice
408.779.9227 fax
408.779.9208 service fax
63-VX11 Rev A AUG09
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