"If you know subwoofers, you know about Velodyne."
"... it's safe to say that when it comes to woofin' done right,
Velodyne's bigger models are probably the safest bet there is."
"... we just sat there marvelling at the sheer power and majesty of
this junior varsity Velodyne."
806/907
-Corey Greenberg
Owner's Manual
Home Theater Technology/February 1995
Face Off: Comparison of five subwoofers
Model Tested: VA-1012X
Velodyne Acoustics, Inc.
1070 Commercial St. Suite #101
San Jose, CA 95112
408.436.7270 voice
408.436.7276 fax
E-mail: [email protected]
Audio/Video Subwoofer System
Printed on recycled paper.
P/N: 63-610
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signal sensing turn on/off 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.
Congratulations!
If you plan to leave the VA-806/907 unused for an extended period
of time, we recommend that you turn off the unit by the master power
switch on the rear panel.
Congratulations on your purchase of a Velodyne VA-806/907
subwoofer system. This system represents the state of the art in
accurate low frequency reproduction. Read and follow the instruc-
tions below to insure safe and proper system operation.
Troubleshooting & Service
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.
Before seeking service for your VA-806/907 subwoofer, please re-
check all systems. Following is a simple troubleshooting guide to
assist you.
Prior to installation
1. Verify unit is plugged in and power outlet used is active.
2. Is power switch on?
3. Is auto turn on/off set properly?
4. Is unit receiving an input signal from your source?
5. Have all controls on subwoofer (volume, crossover, phase,
etc.) been properly set?
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 & Controls
The following conditions require service by a qualified technician:
● Built in power amplifier
● Adjustable (50 to 150hz) low-pass crossover
● 85hz high-pass crossover
● Line-level inputs & outputs
● Speaker-level inputs & outputs with spring clips
● Signal sensing auto turn on/off with bypass option
● Variable volume control
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 cabinet or circuitry is physically damaged.
● selectable phase control (0 or 180 degrees)
● Magnetically shielded for video use
Thank you for purchasing a Velodyne!
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When using a pair of VA-806/907 subwoofers in stereo, it is
preferable to place each subwoofer adjacent to the satellite of the
same channel.
Installation
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 VA-806/709 will
sound louder when placed next to a wall or in a corner.
Your new VA-806/907 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.
Caution!
The VA series subwoofers have amplifiers built into the cabinet. Do
not place the cabinet next to sources of heat such as furnace
registers, radiators, etc. The power cord should be routed in such
a way that it will not be walked on, pinched, or compressed in any
way.
Inputs
Your new VA-806/907 subwoofer is equipped with both speaker-
level and line-level inputs. Use the LINE-IN jacks when connecting
your subwoofer to a pre-amp, signal processor, or line-level cross-
over. The FROM AMPLIFIER jacks connect directly to the speaker
outputs of a integrated amplifier or receiver. Your amplifier section
will notice no additional loading effects when you use these inputs
because of their high impedance.
Regardless of where you install your VA-806/907 subwoofer, it
must remain in an upright position (passive radiator facing down-
ward). Using, shipping, or otherwise storing the VA-806/907 sub-
woofer in any other position for an extended period of time may
result in damage to the unit not covered by warranty.
Note
The VA-806/907 Subwoofer is magnetically shielded to reduce
magnetic emission from its cabinet to increase the number of
possible locations available for placement. However, this shielding
may not be adequate for all installations. Certain types of televisions
are particularly sensitive to stray magnetic fields. If your television
produces distorted colors after installation of your VA-806/907
subwoofer, simply increase the distance between your television
and the VA-806/907 until normal color and operation is returned.
Do not use both LINE-IN and FROM AMPLIFIER inputs simulta-
neously.
Volume control
This control allows you to balance the output from the subwoofer to
the main speakers in your system. To adjust the volume, start with
the volume knob indicator at the "MIN" setting. With your other
speakers playing, rotate the knob clockwise until you create a
volume balance with your speakers. In most cases this will be
somewhere between the "10 o'clock" and "2 o'clock" positions on
the dial.
Care of your subwoofer
Warning - Turning the volume to "MAX" setting may dam-
age the subwoofer with certain source material.
Do not use any harsh detergents or chemicals to clean the cabinet.
Abrasives, detergents, or cleaning solutions may damage the finish
on the cabinet. We recommend using a damp cloth to clean the
cabinet.
Low-pass crossover
Both sets of inputs sum the left and right channels together and the
resulting signal is passed 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
During normal conditions, the VA-806/907 subwoofer may be left on
continuously without any problems. The unit is equipped with a
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Figure 2: Installation using speaker-level (from amplifier) inputs
150 hz. The subwoofer's response will begin rolling off above the
frequency you set this control to.
PHASE
FREQUENCY
VOLUME
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 100-120hz) 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 80hz.
CCAAUUTTIIOONN!!
CAUTION!
WARNING:
AVIS:
Phase adjustment
This control allows you the ability to compensate for having the
subwoofer in a different location than the main speakers. Ideally,
you will have the sound from the subwoofer reach the listening
position the same time as the sound from the main speakers.
However, if the distance from the listening position to the subwoofer
and the distance from listening position to the main speakers differs,
the sound from each will reach your ears at a different time.
+
R
-
-
L
+
MAIN OUTPUTS
(speaker-level)
+
-
+
-
SATELLITE
SPEAKERS
INTEGRATED AMP / RECEIVER
This control allows the signal to be delayed 180 degrees so the
output of the subwoofer will blend in to that of your main speakers
without any cancellation.
Interconnect cables
Auto turn on switch
The auto turn on switch allows the user to bypass the auto turn on
function if desired. When set in the "auto" mode with main power on,
the VA-806/907 will turn itself on when an input signal is present. If
no signal is present, after several minutes the unit will shut itself off.
When set in the "on" mode, the auto turn on/off function is bypassed
and the unit will be on whenever the main power switch is on.
When installing your VA-806/907 using the line-level inputs/out-
puts, you should use standard shielded phono cables. Always keep
the lines as short as practical to minimize noise.
When using the speaker-level inputs/outputs, use the same quality
speaker cable to your subwoofer as you run to your satellites.
Placement
Power switch
The VA-806/907 operates at very low frequencies which are prima-
rily non-directional. While it is recommended that the subwoofer be
placed on the same plane as the satellite speakers, room and
system conditions often dictate otherwise. See your dealer for help
in placement.
The master power switch is located on the right half of the unit. This
slide style switch is the main on/off for the unit. This switch should
be set to up for on , down for off.
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A word about subwoofer outputs
The Velodyne subwoofer is designed to operate using the full range
audio signal for input when using the built-in crossover. Some
surround sound processors/receivers have a "subwoofer out" jack
that is already crossed over and designed to be used with a
conventional amplifier and speaker. If this is the case, you should
set the low pass crossover to 150Hz.
Line-level connection
Figure 1 shows connection to a pre-amplifier's main outputs and
returning them to your amplifier inputs.
Note
When installed in this fashion, your satellite speakers will be
crossed over at 85hz, which removes the lower bass from your
amplifier and speakers thus, enabling them to do a better job
reproducing high frequencies. By utilizing this method, you will have
a bi-amplified system, gaining improved power and headroom for
your system.
If not using an external crossover, you should use the built-in
crossover for optimal performance.
Subwoofer out from A/V
Processor
Figure 1: Installation using line-level (line in) inputs
From the low pass output of your signal processor Install into right
or left RCA line in connector in the back of the subwoofer or use a
"Y" connector adapter into both right and left RCA line in connectors
in the back of the subwoofer.
PHASE
FREQUENCY
VOLUME
Speaker-level connection
Figure 2 shows an easy way to connect your VA-806/907 subwoofer
directly to your receiver or integrated amplifier.
When connected in this fashion, your satellite speakers will be
crossed over at 85hz, which removes the lower bass from your
speakers thus, enabling them to do a better job reproducing high
frequencies.
CCAAUUTTIIOONN!!
CAUTION!
WARNING:
AVIS:
You may also connect your satellites directly to your receiver or
amplifier along with the subwoofer if you wish to bypass the internal
high-pass crossover.
PRE-AMP
AMPLIFIER
MAIN OUTPUTS
RIGHT LEFT
MAIN OUTPUTS
MAIN INPUTS
RIGHT LEFT
RIGHT
LEFT
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 that all connections are tight, and
TO SATELLITE SPEAKERS
that there are no loose strands or frayed wires.
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