Klipsch Reference Subwoofers User Manual

Klipsch Reference Subwoofers User Manual & troubleshooting

Klipsch Reference Subwoofers User Manual
Klipsch Reference Subwoofers User Manual  & troubleshooting 1


  1. the standard, the benchmark, the point used for comparison
  2. the embodiment of the legendary Klipsch sound

In 1946, Paul W. Klipsch revolutionized the audio industry by creating our proprietary horn technology and the acoustic principles that are the driving force behind our highly acclaimed signature sound. Today, we remain true to PWK’s vision and pack the better part of a century’s worth of sweat and genius into every product we make. These speakers are the result of our obsession with that aural perfection. Experience the power, detail and emotion of Klipsch Reference. We are the Keepers of the Sound®.



We want your new speaker system to look as good as it did leaving the factory! Please check promptly for any transit damage. Carefully unpack your new speaker system and verify the components against the packing list. In extreme circumstances, items may have become damaged in transit. If any damage is discovered, notify the delivery service and dealer where the system was purchased. Make a request for inspection, and follow their instructions for evaluation. Be sure to keep the product’s original shipping carton.


Klipsch powered subwoofers are designed to reproduce deep bass and deliver the impact that makes your movies and music come alive. For optimum performance, place your subwoofer in a corner of the room on the same wall as your front channel speakers. (refer to Figure 1). Please note that room placement can have a dramatic effect on the performance of your powered subwoofer. Corner placement, as suggested above, will increase the amount of bass output, while placing the subwoofer along the middle of a wall, or out in the room will decrease the amount of bass output. Experiment with a number of different placement options and control settings to find the one that best suits your particular room and taste. When choosing your subwoofer’s location, keep in mind that you will need to connect the subwoofer’s built-in amplifier to an AC power outlet.

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CAUTION: Ensure that the subwoofer is unplugged from the AC wall outlet before making any connections.

“LINE IN” Connection – Most of today’s surround receivers (and pre-amplifiers) have a line level subwoofer output labeled Subwoofer Pre Out, Sub Out, SW Out, etc. If you have this output, connect one end of a subwoofer cable to it and connect the other end of the cable into the subwoofer line input labeled LEFT/LFE. This connection allows the subwoofer to operate with both music and surround sound movies (refer to your receiver manual). In absence of a subwoofer output on your receiver, as an alternative hookup, you can connect Left and Right channel Pre-Amp Outputs from your receiver (if provided) to the Left/LFE and Right input on the subwoofer.

“LOWPASS” Control – The crossover point chosen determines where low bass frequencies are “handed off” from the speakers to the subwoofer. If setting the crossover point in the receiver, turn the Lowpass Filter knob on the subwoofer to the farthest point right (160Hz). Set the crossover point based on the size of the main left/ right speakers you are using in the system. As a general rule, for larger, floorstanding speakers, set the crossover point between 50Hz-90Hz. If using small bookshelf or “satellite” speakers for the mains, set the crossover point between 90Hz-150Hz. The smaller the speaker, the higher the setting until the bass frequencies blend well between the speakers and your subwoofer once your system is completely hooked up. If your receiver does not have a crossover point setting, set the Lowpass Filter on the subwoofer instead within the same recommended settings (see receiver manual for additional speaker setup info).

Level – If your subwoofer is connected to a Subwoofer Output of a surround receiver, first set the subwoofer volume level control in the receiver to the “half way” or “0 dB” position. Then increase the volume (or gain) of the subwoofer up until the subwoofer’s volume level matches the output of your main speakers. After this setup is completed, the volume control on your system’s main amplifier or pre-amplifier will be the volume control for both your subwoofer and speakers together. If your subwoofer is connected to the L/R PreAmp Outputs of a receiver there will be no subwoofer volume in that receiver to set before setting the subwoofer’s gain control.

“PHASE” 0/180 – This control is used to acoustically match the subwoofer’s output to your main speakers. Select the position either 0˚ or 180˚ in which your subwoofer has more output at the listening position.

Off/Auto/On – When this switch is in the “AUTO” position, the subwoofer will automatically turn “on” when it senses a signal. It will automatically go into “standby mode” after 15-20 minutes with no signal. When the switch is set to the “On” position, the subwoofer will remain on until manually switched to another settings. When this switch is in the “OFF” position, the subwoofer will remain “off” until the switch is manually turned back to the “AUTO” or “ON” position.

Power LED indicator – Located on the front baffle, this LED indicates the operating status of the built-in amplifier. The LED will light green when the amplifier is on and receiving a signal. If the LED is dark and not lit, the amplifier is off. For more information on the controls mentioned in this manual and on bass management, see your dealer or visit www.klipsch.com

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Your subwoofer has a durable vinyl finish that should only require dry dusting or cleaning with a dry cloth. Avoid the use of abrasive or solvent-based cleaners and harsh detergents. The brush attachment of your vacuum should remove any dust from your subwoofer enclosure.


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