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Interconnect cables
When installing your VA-907.2 using the line-level inputs/outputs,
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
True subwoofers operate at extremely low frequencies which are
primarily omnidirectional. While it is recommended that the sub-
woofer be placed on the same plane as the satellite speakers, room
and system conditions often dictate otherwise. Keep in mind that
frequency response and output levels can be drastically influ-
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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.
A bypass switch is also provided if you wish to use an external
crossover. If you are not using an external crossover, we recom-
mend that you use the one provided within the unit for optimum
performance.
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.
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.
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-907.2 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.
Power switch
The master power switch is located on the right half of the unit. This
rocker style switch is the main on/off for the unit. This switch should
be set to position 1 for on (up), 0 for off (down).
continued. . .
Figure 2: Installation using speaker-level (from amplifier) inputs
Serial # Label
CAUTION!
CAUTION!CAUTION!CAUTION!CAUTION!
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LOW-PASS
CROSSOVER
VOLUME
POWER
IN OUT
MADE IN USA
LEFT
RIGHT
RIGHT
LEFT
FROM AMPLIFIER
RIGHT LEFT
TO SPEAKERS
INTEGRATED AMP / RECEIVER
MAIN OUTPUTS
(speaker-level)
SATELLITE SPEAKERS