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STEP #1: POLARITY TEST
1.
Set your subwoofer near either the front left or the front right satellite.
2.
Set your RS meter at the listening position (ear high) when seated.
3.
Set the Phase Control of your sub to 0 degrees.
4.
Reduce the master volume on your Pre/Pro or Receiver to approximately -10 dB.
5.
Play an 80 Hz test tone, using your test tone CD, with the FL, FR and subwoofer on.
6.
Note the SPL reading.
7.
Switch the Phase Control to 180 degrees and repeat the process.
8.
Use the Phase Setting that yielded the highest output.
STEP #2: FIRST LEVEL ADJUSTMENT
1.
Set the subwoofer level in your Pre/Pro or Receiver's channel calibration menu to -5 from
0 (reference).
2.
Set the subwoofer(s) amplifier gain control to approximately one o'clock.
3.
Use the Pre/Pro or Receiver calibration menu to calibrate the subwoofer level and use the
subwoofer amplifier gain control (add gain or reduce gain at the subwoofer amplifier) to
arrive at a reading on the RS meter that's the same as the level you use to calibrate the
mains.
4.
The reason for the -5 pre-amp setting is to assure that the pre-amp doesn't send a clipped
signal the subwoofer amplifier.
5.
In the final subwoofer level tweaks, the preamp subwoofer channel trim can be adjusted
via the remote control.
