7.
8.
9.
10.
11.
Set the switches on the ULW-10 to OPERATE – FILTER – NORMAL. The SOS will remain calibrated
regardless of power interruptions.
Disconnect the microphone plug from the ULW-10, gather up the microphone and cable, and store
for later use.
Apply power to your system equipment and adjust the subwoofer amplifier level to properly integrate
with the rest of the system (refer to the FINAL SYSTEM BALANCE Section). Because the SOS filter acts
to reduce room resonance modes, the average subwoofer level after calibration may be lower than
previously set and will most often need to be adjusted higher to match previous levels.
The optimized system is now ready for use.
To recalibrate the system, return to step 1 of the Set-up Section. It is not necessary to disconnect any of
the connection cables in the system.
After correctly performing the calibration procedure with the microphone connected to the system and
verifying that the subwoofer is operating correctly with the rest of your system, it is time to perform a
final system balance. Due to the nature of the analog filter being used by the Subwoofer Optimizer
System to optimize your system for its room resonance, you may need to increase the level of the
subwoofer amplifier. Use your systems internal test tone generator, external test tone signal sources,
or your ear to adjust the level to provide the best possible integration with the rest of your system's
speakers. Under normal conditions only a slight level increase to the original setting should be needed.
You are now ready to enjoy the benefits of an optimized subwoofer as part of your system.
Of course, you may fine-tune the subwoofer gain control to your listening preference or to allow for
source material differences.
U
LW
-1
0
Set-up cont.
Final System Balance
Before listening through your optimized system, you may want to compare the new system configura-
tion with the original configuration. To enable the by-pass mode of the Subwoofer Optimizer System,
set the switches on the ULW-10 to OPERATE – BYPASS - NORMAL. To re-engage the filter settings, set the
switches on the ULW-10 to OPERATE – FILTER – NORMAL. The room resonance filter settings will remain
stored within the unit and you will not need to repeat the calibration procedure.
In the situation where two ULW-10s have been used, set the switches on both ULW-10s to
OPERATE – BYPASS – NORMAL. To re-engage the filter settings, set the switches on both ULW-10 to
OPERATE – FILTER – NORMAL. The room resonance filter settings will remain stored within the units and
you will not need to repeat the calibration procedures.
By-Pass Test
13.
SOS
