Factor Electronics PRO-SUB12A Owner's Manual - page 5
Back Panel Operations and Connections:
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3. Line level Inputs:
The line level inputs are unbalanced -10dB
stereo RCA jacks. Connect the line level
outputs from your mixer, receiver (sub out),
or pre-amplifier here. When using a mono
output connect to the LEFT input only.
4. Line Level Outputs:
The line level outputs are unbalanced -10dB
stereo RCA jacks. Connect the line level
outputs to your stereo amplifier, or another
sub-woofer When using a mono output connect
to the LEFT output only.
5. Auto ON/OFF Switch:
With this switch in the OFF position the RCA-
OUT jacks will pass full frequency audio fed
from the RCA-IN jacks. With this switch in the
ON position the internal crossover will affect the
RCA-OUT signal. Set the FREQ control to your
desired crossover point. The PRO-SUB12A will
produce the frequencies below the crossover
point and the RCA-OUT jack will pass all
frequencies above the crossover point.
This becomes a “High Pass” and a “Low Pass”
filter.
Example:
With a simple 2.1 setup. I have
read the specs on my two front L/R
speakers and determined that their
frequency response is 100Hz-20kHz.
Set the FREQ control to 100Hz, set the AUTO
Switch to ON. Now connect an RCA cable
from the LINE OUT RCA jack to the amp that
will be powering my main L/R speakers.
with this setup the PRO-SUB12A will produce
the frequencies below 100Hz and the main
L/R speakers will produce frequencies from
100 Hz- 20-kHz.