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is uneven. S om e frequencies w ill sound exaggerated
relative to others, or the subw oofer will sound thin and
lack im pact. The Boundary E Q control allows you to
com pensate for the effects of room boundaries on the
frequency response
of the subw oofer. A d justing the control enables you to
achieve sm ooth low frequency output from the sub-
w oofer regardless of its location in your room .
The follow ing diagram s show n in Fig. 1 show the corre-
lation betw een subw oofer placem ent and Boundary EQ.
These diagram s are guidelines only. Your room
acoustics and personal tastes w ill ultimately dictate the
final setting.
LO W PASS FILTER :This control determines the upper-
limit frequency the subw oofer w ill reproduce. For
exam ple, setting the filter at 100H z w ill cause the
subw oofer to reproduce only frequencies below 100H z.
The Low Pass Filter is continuously variable between
40H z (low bass) and 180H z (upper bass), to
accom m odate different speakers.
Tw o tips on using the Low Pass Filter:
As a starting point, set Low Pass Filter to the 1 o’clock
position. This will result in an 80H z low pass. As the set-
ting is typical for most Dolby D igital / D TS applications.
Note: The LFE input bypasses the adjustable 12dB Low
P ass Filter.
See the Fine-Tuning section for further adjustm ent
guidelines.
SUBW OOFER PHASE: This sw itch sets the phase of
the subw oofer at either the 0° position (normal phase) or
the 180° position (reverse phase) to achieve the
sm oothest possible bass response in your system .
This phase-reversing option is im portant because if bass
frequencies com e from both the subw oofer and the main
speakers, peaks and dips in the frequency response can
occur at the listening position. In these cases, reversing
the subw oofer phase can improve blending and balance.
To properly set the Subw oofer Phase:
• Play fam iliar music, reversing phase settings. And listen
from your usual position.
• Avoid evaluating while standing above the subw oofer or
am plifier; sound at the listening position will be
significantly different.
• The correct setting is the one in which the bass is the
loudest at the listening position.
POW ER MODE: This feature autom atically sw itches
your SW 10 ll or SW 12 into m inimum-pow er m ode (ie,
sleep) w henever no signal is present for 20 m inutes.
W hen a signal is received, it im m ediately turns on again.
As AU TO M ode is autom atic, it requires no adjustm ent,
nor is there a need to turn the SW 10 ll or SW 12 on and
off every time it is used. W hen in O N M ode, the sub-
w oofer is alw ays on.
+3dB
-3dB
0
Boundary
+3dB
-3dB
0
Boundary
+3dB
-3dB
0
Boundary
Quarter/
Half
S pace
Half
S pace
Half/
W hole
S pace
Fig. 1