Read JBL ARC SUB 8 (serv.man4) User Guide / Operation Manual online
Troubleshooting
three.
Operation
min max
Volume
min max
Volume
Mode
Procedure
LED Status
Off
Receiver/amplifier off
Red
On
Receiver/amplifier on and playing program material
Green
Standby
Simply turn off your receiver/amplifier. The subwoofer will
Red
turn off after approximately five minutes. The subwoofer
will turn on when your receiver/amplifier begins playing again.
will turn on when your receiver/amplifier begins playing again.
Volume
Crossover Frequency
The crossover-frequency knob
determines the highest fre-
quency your subwoofer will
reproduce. It allows a seam-
less transition from the
subwoofer to the satellite
speakers. Experiment with
determines the highest fre-
quency your subwoofer will
reproduce. It allows a seam-
less transition from the
subwoofer to the satellite
speakers. Experiment with
this adjustment to find the
crossover frequency that
sounds best with your
speakers. When using the
speaker-level connections,
the crossover adjustment will
also limit the low frequencies
crossover frequency that
sounds best with your
speakers. When using the
speaker-level connections,
the crossover adjustment will
also limit the low frequencies
being sent to your satellite
speakers. This means that
your satellites won’t have
to try to reproduce the infor-
mation the subwoofer
is playing.
speakers. This means that
your satellites won’t have
to try to reproduce the infor-
mation the subwoofer
is playing.
If you used the high-level
(speaker) inputs and there
is no sound from any of the
speakers, check the
following:
(speaker) inputs and there
is no sound from any of the
speakers, check the
following:
• Receiver/amplifier is on
and a source is playing.
• Powered subwoofer is
plugged in.
• Check all wires and connec-
tions between receiver/
amplifier and speakers. Make
sure all wires are connected.
Make sure none of the
speaker wires is frayed,
cut or punctured.
• Review proper operation
of your receiver/amplifier.
and a source is playing.
• Powered subwoofer is
plugged in.
• Check all wires and connec-
tions between receiver/
amplifier and speakers. Make
sure all wires are connected.
Make sure none of the
speaker wires is frayed,
cut or punctured.
• Review proper operation
of your receiver/amplifier.
If there is low bass output,
check the following:
check the following:
• 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.
• Powered subwoofer is
plugged in.
• Adjust the crossover point.
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.
• Powered subwoofer is
plugged in.
• Adjust the crossover point.
If you used the line-level
inputs and there is no
sound from the subwoofer,
check the following:
inputs and there is no
sound from the subwoofer,
check the following:
• Receiver/amplifier is on
and a source is playing.
• Powered subwoofer is
plugged in.
• Check all wires and con-
nections between receiver/
amplifier and subwoofer.
Make sure all wires are con-
nected. Make sure none of
the wires is frayed, cut or
punctured.
• Review proper operation of
your receiver/amplifier.
and a source is playing.
• Powered subwoofer is
plugged in.
• Check all wires and con-
nections between receiver/
amplifier and subwoofer.
Make sure all wires are con-
nected. Make sure none of
the wires is frayed, cut or
punctured.
• Review proper operation of
your receiver/amplifier.
Arc Sub8 7/17/98 4:47 PM Page 5
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