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The phase control determines
whether the subwoofer
speaker’s piston-like action
moves in and out with the
main speakers, 0°, or opposite
the main speakers, 180°. There
is no correct or incorrect set-
ting. Proper phase adjustment
depends on several variables
such as subwoofer placement
and listener position. Adjust
the phase switch to maximize
bass output at the listening
position.
Phase
0
180
Phase Control
Remember, every system, room
and listener is different. There
are no right or wrong settings;
this switch offers the added
flexibility of being able to
adjust your subwoofer for
optimum performance for your
specific listening conditions.
Should you decide to fine-
tune your system for optimum
performance, be patient and
trust your ears. It will be
worth the effort involved to
fully “tweak” your system.
Troubleshooting
If you used the high-level
(speaker) inputs and there
is no sound from any of
the speakers:
• Check that receiver/amplifier
is on and a source is playing.
• Check that powered sub-
woofer is plugged in.
• Check all wires and connec-
tions between receiver/ampli-
fier and speakers. Make sure
all wires are connected. Make
sure none of the speaker wires
are frayed, cut or punctured.
• Review proper operation
of your receiver/amplifier.
If there is low (or no)
bass output:
• Make sure the connections
to the left and right “Speaker
Inputs” have the correct
polarity (+ and –).
• Make sure that the sub-
woofer is plugged into an
active electrical outlet.
• Adjust the crossover point.
• Flip the phase control switch
to the opposite position.
• If you are using a Dolby*
Digital/DTS® receiver or
processor, make sure that the
subwoofer adjustments on
the receiver/processor are
set up correctly.
• Slowly turn the level
control clockwise until you
begin to hear the desired
amount of bass.
If you used the line-level
inputs and there is no sound
from the subwoofer:
• Check that receiver/amplifier
is on and a source is playing.
• Check that powered sub-
woofer is plugged in.
• Check all wires and con-
nections between receiver/
amplifier and subwoofer. Make
sure all wires are connected.
Make sure none of the wires
are frayed, cut or punctured.
• Review proper operation of
your receiver/amplifier.
• Slowly turn the level
control clockwise until you
begin to hear the desired
amount of bass.
• Make sure that you have
configured your receiver/
processor so that the sub-
woofer/LFE output is on.