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Amplifier is not connected to constant A.C.
power outlet.
Subwoofer(s) is/are not connected to amplifier
correctly
.
Amplifier is not receiving an audio signal from
Pre-Amp/Receiver.
Electrical short in wiring.
Amplifier fuse might be bl
own.
Bad connection(s) to non working subwoofer(s).
Electrical short in wiring.
If one subwoofer is damaged due to being
overdriven, then it may have a negative effect on
another subwoofer used in a series connection.
The + and - polarity of the
subwoofer wire might
be reve
rsed on the subwoofer.
Crossover frequency not adjusted correctly
.
Crossover switch is in the wrong position.
Make certain that the amplifier is plugged into
an unswitchable A.C. power outlet.
Make certain that subwoofer(s) is/are conn-
ected properly (refer to the connections section
of this manual).
Make certain that there is an audio signal from
Pre-Amp/Receiver and that audio connections
resemble those in the connections section of
this manual.
Verify that all connections are complete and
secure, with no stray
wires contacting other
terminals
.
If problem is in wire itself, replace suspect wire
.
Replace fuse( if fuse is not readily accessible,
consult your authorized RBH dealer.)
Warning: Before replacing fuse, please see
the rear panel
features/controls section (#14)
of this manual.
Ve
rify that all wires are properly connected.
Verify that all connections are complete and
secure, with no stray
wires contacting other
terminals
.
If problem is in wire itself, replace suspect wire
.
Chec
k each individual subwoofer to verify that
each is still operational.
Check the entire system for proper polarity
.
Adjust crossover frequency by turning the
Crossover Frequency Control clockwise until
desired sound is obtained.
Check Crossover On/Off switch for correct
setting.