15
FINE TUNING
Once you have your speakers positioned in the room and
have set speaker distances and speaker level calibration
with your Processor or A/V Receiver (if applicable), it’s
time for a little fine tuning.
When fine tuning your subwoofer to best integrate with
the rest of your system use music and video soundtracks
that you know well. They should contain selections with
extended bass that is continuous and repetitive.
Assess subwoofer bass output for best blend with your
main speakers. It should not be overbearing or draw
attention to itself, nor should it be thin and difficult to hear.
It should add ‘weight’ and ‘punch’ to the overall sound and
keep pace with your main speakers.
If you are using a receiver, preamplifier or preamp/
processor with tone controls, set them to flat (i.e. ‘0’) and
switch loudness controls off.
Some subwoofer locations may result in bass frequency
cancellations. If bass sounds dislocated or weak, adjust
the phase according to the Phase Alignment Control
instructions that follow below.
SETTING SUBWOOFER CONTROLS
1. Turn the Subwoofer Level control completely counter-
clockwise to its minimum.
2. Turn the Subwoofer Cut-off Frequency control to its
highest frequency (i.e.150 Hz).
3. Turn the Phase Alignment control to 0° completely
counter-clockwise.
4. Listen to a bass music or video selection while seated in
your primary listening area and have an assistant turn
up the Subwoofer Level control until the subwoofer
can be clearly heard.
5. Have an assistant slowly rotate the Phase Alignment
control until you hear the most bass. Your subwoofer
and front speakers are now in phase. Do not change
phase alignment again unless you move subwoofer or
front speakers to a different location in your room.
6. Again, turn the Subwoofer Level control completely
counter-clockwise to its minimum.
7. Turn the Subwoofer Cut-off Frequency control to its
lowest frequency (i.e. 50 Hz).
8. Slowly rotate the Subwoofer Level control until you
match the subwoofer’s volume with the volume of your
front speakers. Bass should be clearly audible, but not
intrusive.
NOTE: If using an A/V receiver or processor to control
crossover setting, skip the next step and set the
subwoofer cut-off frequency control to ‘Bypass’.
9. Slowly rotate the Subwoofer Cut-off Frequency control
until you hear the best subwoofer/front speaker blend.
If the sound is too thin you have not set the frequency
high enough; if the sound becomes boomy you have
set the frequency too high. Adjust until you find the
most natural bass balance.