“HIGH PASS SELECT” / KSW 15 ONLY
This switch selects either “50Hz” or “100Hz” as the bass cutoff frequency for your main speakers
when using line level connections. Refer to Figure C. This requires that your KSW 15 be connected to
a system utilizing both the preamp output and the power amp input jacks. Typically, the higher
“100Hz” setting is used for smaller bookshelf speakers to relieve them of the strain of reproducing
loud, deep bass frequencies. The “50Hz” setting is typically selected for larger floorstanding speakers
as they are better able to handle bass energy, needing reinforcement only at the lowest frequencies.
The subwoofer’s high pass filter has a gentle cutoff so there is still some audible signal content in
your main speakers below the circuit’s cutoff frequency.
“POWER” / ALL MODELS
This switch has conventional power “ON” and “OFF” positions, as well as an automatic setting. In
the “AUTO” position, the subwoofer will turn itself on when it receives a signal from your system.
If no signal is sent for a period of 15 minutes, the sub will turn itself off. A red power light indicates
a standby mode in which the amplifier will turn on when it senses a signal. Green indicates the sub-
woofer is on and receiving a signal.
“PHASE” / ALL MODELS
This switch is used to reverse the polarity (phase) of the subwoofer relative to your main speakers,
allowing you to compensate for any acoustic cancellation of bass energy caused by the listening
room. Audition a recording with a prominent, repetitive bass line in your listening chair. Use the set-
ting that yields the greatest quantity of bass (0 or 180). The proper setting of this control is affected
by room acoustics and the placement of the subwoofer in the room. You may need to repeat this
procedure if the subwoofer is repositioned.
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.
— Ensure that the “POWER” light on the front of the cabinet is lit. If it is not, check the AC
fuse. When changing the AC main’s power fuse, unplug the power cord first. To access the
fuse, use the appropriate screwdriver to unscrew the flush cap on the amplifier’s 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 (REQUIRED).
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)
• All KSW powered subwoofer amplifiers are protected by a thermal sensor. If they run for extended
periods beyond their 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.
