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Settings
Setting up the AV receiver
To take full advantage of your Concept P Home
Theatre System with Active Subwoofer, set the
"Speaker Setup" section of your AV receiver to
"small" or "normal" (not "large") for the satellite
speakers. This ensures that the speakers receive
the right amount of signal, and that the sub-
woofer and front speakers have matching
volumes.
Also in the "Speaker Setup" section (Bass Manage-
ment and/or Speaker Management), make sure
the subwoofer is set to "On" . For the Concept P
system, set the crossover frequency to 150 Hz.
For further details, please refer to the operating
manual of your AV receiver.
Setting up the subwoofer
If your system is based around an AV receiver, set
the subwoofer's frequency control to maximum;
the AV receiver automatically determines the
crossover frequency in relation to the subwoofer's
output.
Modern AV receivers determine the subwoofer's
phase automatically. This happens within the
receiver's "Speaker Setup" utility, which analy-
ses the distance between the different speakers
and the listening spot. For this to work correctly,
the subwoofer's own phase switch needs to be
on "0°" .
If your system uses an older-model AV receiver or
another type of amplifier without a setting for the
subwoofer distance, you can use the subwoofer's
phase switch to manually adapt the phase to the
other speakers. The goal here is for all the bass
loudspeaker membranes that reproduce the fre-
quency range around the crossover frequency
to vibrate in the same direction. If the phase is
set incorrectly, this may cause a reduced bass
response or even bass cancellations. If the sub-
woofer is positioned between the front speakers,
we recommend a phase setting of "0°" (grey area
in the diagram on page 7); if the subwoofer is
positioned closer to the listening spot, a phase
of "180°" may be more appropriate. Similarly, the
"180°" setting may help to eliminate bass can-
cellations if you position the subwoofer in other
areas of the room. Always set the phase control to
the position where the bass response is best.
The subwoofer's output volume may vary depen-
ding on usage, e.g., home theatre sound system
or music playback. Whereas an action-packed DVD
typically contains very defined sub bass signals,
many music-only sources do not. This is especially
noticeable if your system is calibrated for opti-
mum DVD playback. To find the best compromise
between differing sound sources, use your own
subjective judgement. Our recommendation is to
determine the best subwoofer volume gradually
over time.
Avoid configuring the subwoofer volume auto-
matically via your receiver's integrated room
analysis computer (advanced AV receivers only).
Instead, set the subwoofer level provided in the
bass management/speaker management section
("Speaker Setup") to a high value, such as +4 to
+10 dB; this will guarantee that the subwoofer
activates itself at the right times when in "Auto
On/Standby" mode. You can then use the sub-
woofer's own level control to experiment with dif-
ferent bass levels that are suited to your various
listening scenarios.
· Concept P
9
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