Bowers & Wilkins ASW10CM S2 Manual page 8

1. Home Theatre Settings
Set the VOLUME (LINE or SPEAKER) control initially
to the 9 o'clock position.
Set the LOW-PASS FILTER switch to OUT.
Set the EQ switch initially to position A.
Set the PHASE switch initially to 0°.
Set the LOW-PASS FREQ (frequency) control to
140 if the speaker level inputs are used. The setting
is irrelevant if the line level inputs are used.
See the "Fine Tuning" section for more.
The subwoofer is not a THX licensed component, but
®
may be used with a THX ® controller if desired. If a THX
controller is used, ensure that the subwoofer function
is enabled. This incorporates all the filtering and level
setting required for the subwoofer in all modes. For
level calibration, the internal test noise and channel
level controls in the THX controller should be used.
®
In all cases the levels should be set to obtain 75dB
SPL (C-weighted) at the listening position from the
controller's internal noise test signal.
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With other processors, configure the front and
surround speakers to "large" or "small" as appropriate
before setting the levels. Use the internal noise test
signal and volume controls of the processor to set the
levels of all the speakers. Only change the VOLUME
control on the subwoofer if there is not enough range in
the processor to achieve the correct levels.
Inexpensive sound level meters are readily available
from electronics stores and can be used to calibrate
the levels. Refer to your processor manual for further
details on how to set the levels.
®
2. 2-channel Audio Settings
Set the VOLUME (LINE or SPEAKER) control initially
to the 9 o'clock position.
Set the LOW-PASS FILTER switch to IN.
Set the EQ switch initially to position A.
Set the PHASE switch initially to 0°.
Set the LOW-PASS FREQ control to match the
-6dB low frequency cut-off frequency of the satellite
speakers. Note: Both -3dB and -6dB figures can be
found in the specification of each B&W speaker model.
If the satellite speaker manufacturer quotes only a -3dB
frequency, the optimum setting for the LOW-PASS
FREQ control should be between 0.6 and 0.9 times
that figure. The more gradual the low frequency roll-
off of the satellite speakers, the lower the frequency
should be set.
See the Fine Tuning section for more.