Velodyne Acoustics SPL-1200R - Manual (Page 6)

(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 30 out
of 100.
(3) AUTO ON/OFF Switch
Use this switch to select between auto-on and constant on
(auto-on bypass) operation.
(4) LINE INPUT/LFE Input
Connect these jacks to the LINE OUT preamp output,
LFE output or subwoofer output jacks of your
receiver/processor. If using the LFE output from your
receiver or processor, plug the single cable into the “L” - LFE
input or for more signal, use a “Y” connector and feed the
signal into both “R” and “L” inputs.
(5) LINE OUTPUT
Connect these jacks to the LINE IN amp input to use the
SPL-R’s internal high pass crossover. See below for a more
detailed explanation of this crossover.
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