Paradigm SUB 15 - Manuel (Page 8)

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,
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:
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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 the
subwoofer or front speakers to a different location in your room, or
move or remove any large items of furniture or room furnishings (i.e.
carpet, draperies, etc.)
6. 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.
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.
10. Adjust the Bass Contour control to suit your personal preference. The
‘0.0dB’ position provides accurate bass extension to the lowest limits
of the subwoofer’s design. Increasing the Bass Contour control provides
more output in the 60 Hz region which provides more visceral bass
impact with movies.