Read JBL PSW-D115 (serv.man2) User Guide / Operation Manual online
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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.
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.
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:
(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.
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:
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.
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:
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.
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.
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