Troubleshooting
• If your subwoofer has little or no output:
– Double-check your power (AC) and system connections.
– Make sure that the “LEVEL” control is turned up.
– Make sure that the power switch on the rear control panel is in the “ON” or “AUTO” position.
– Check that the Power light on the rear control panel is lit. If it is not, check the AC fuse. When
changing the AC main power fuse, unplug the power cord first. To access the fuse, use the appropriate
screwdriver to unscrew the flush cap on the fuse receptacle. If the fuse is blown (the filament inside
the glass tube is burned through), replace it with the same type and value printed on the amplifier
panel next to the fuse holder. NEVER INSTALL A LARGER FUSE THAN THE VALUE INDICATED
ON THE AMPLIFIER PANEL. If the fuse blows again when the subwoofer is powered up, return the
unit to your authorized Klipsch dealer for servicing by qualified personnel. If dealer service is not
available, contact Klipsch Customer Service for a Return Authorization Number before shipping.
Klipsch Customer Service: 800-554-7724
All return shipments should be made to:
Klipsch L.L.C.
137 County Road #278
Hope, AR 71801
RA# … (Return Authorization Number required)
Unless otherwise instructed by Customer Service, do not ship items being returned to our
corporate offices in Indianapolis!
• The powered subwoofer amplifier is protected by a thermal sensor. If it is run for extended
periods beyond the designated power rating, the thermal sensor will engage and shut down the
subwoofer. If this occurs, turn the power switch off, reduce the volume level on your electronics
and wait five minutes before restarting the system.
• If the speaker level connections are in use, a polarity reversal of one of the speaker wires coming
from your amplifier will result in diminished output from the subwoofer. Refer to “About Speaker
Wire Connections.”
• If you experience a noticeable hum when the subwoofer is connected to your system (a system that
includes video equipment), disconnect the cable television line (if present) from the system. If the
hum disappears, consult your Klipsch dealer for a ground isolator for the cable line. If this does
not solve the problem, contact your Klipsch dealer for further advice.
• If you connect the subwoofer to a second set of speaker terminals (i.e. speaker B), and there is a
dramatic loss of volume from your main speakers, hook the subwoofer to the same terminals on
your amplifier as your main speakers. Alternately, you can hook your main speakers to the
“SPEAKER IN” terminals on the subwoofer, along with the subwoofer’s input cables, or switch to
a line level connection if your electronics permit. If you are still experiencing difficulties, consult
your authorized Klipsch dealer.
• If the subwoofer is installed near your television and color distortion is noted, simply move the sub-
woofer farther away from your television until the interference disappears from the picture.
• Regardless of your amplifier’s rated capacity, do not operate the system at the full output (highest
volume): Amplifiers can create extremely high levels of distortion when operated at full output and
may damage your loudspeakers.
• Position speaker connection wires so that they do not create a trip hazard.
If you have any questions regarding the installation or connection of your subwoofer, please contact
your Klipsch dealer, or contact us directly at 800-554-7724.
Care and Cleaning of Your Subwoofer
Your Klipsch subwoofer has a durable vinyl finish that should only require dry dusting or cleaning
with a damp cloth. Avoid the use of abrasive or solvent-based cleaners and harsh detergents.
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