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8
INSTALLATION
Power
After making the audio connections, make sure the
voltage switch on the back of the SUB85 is set to the
correct voltage for your area. Insert one end of the
power cable into the IEC receptacle next to the voltage
switch and the other end into a live power receptacle.
Slide the power switch to the Auto setting to place the
SUB85 in standby mode or the On setting to place it in
full on mode. The power indicator on the front panel
will light up amber when the SUB85 is in standby mode
and green when fully on.
Adjustments
Crossover frequency
Set the crossover frequency to match the low-frequency
roll-off point of the main speakers. If you don’t know
the roll-off point, use the following guidelines:
• For main speakers with a full frequency range, set
the crossover between 50 and 80 Hz.
• For main speakers with limited bass extension, set
the crossover between 80 and 100 Hz.
• For main speakers that reproduce only midrange and
high frequencies, set the crossover between 100 and
200 Hz.
Your receiver or processor may have a bass management
feature with settings for large, medium, and small main
speakers. Refer to your equipment manual to determine
the appropriate crossover setting if you use this feature.
The goal is to set the crossover frequency at the point
where the subwoofer reproduces the low frequencies
not reproduced by the main speakers, with very little
overlap and no gaps in the overall response of the
system. To make this adjustment precisely, you can use a
calibration CD or DVD and a sound-level meter.
Volume
Start with the volume set at minimum, raising it gradu-
ally until output from the SUB85 sounds about the same
volume as output from the main speakers. Again, you
can use a sound-level meter to be precise.
Phase
Depending on the location of the SUB85, its output
at certain frequencies may be out of phase with the
output of the main speakers. This is especially true when
the subwoofer and main speakers are very different
distances from the listeners.
To compensate for this, try setting the phase switch at
both positions. You may fi nd that one position provides
smoother bass response than the other.
Power receptacle and voltage switch
Power switch and audio controls