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Owner's Manual 

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Phase switch: This switch determines whether the subwoofer driver’s 
piston-like action moves in and out in phase with the system’s other 
speakers. If the subwoofer were to play out of phase with the other speak-
ers, the sound waves from the other speakers could partially cancel out 
the sound waves from the subwoofer, reducing bass performance and 
sonic impact. This phenomenon depends in part on the placement of all 
the speakers relative to each other in the room.

Input Mode switch: When this switch is in the “Normal” setting, the input 
signal from the Line In connectors is active. When this switch is in the 
“LFE” setting, the input signal from the LFE In connector is active, and the 
subwoofer’s internal crossover is bypassed.

Level control: Use this control to adjust the subwoofer’s volume. Turn the 
knob clockwise to increase the volume; turn the knob counterclockwise to 
decrease the volume.

Crossover control: This control determines the highest frequency 
at which the subwoofer reproduces sounds. The higher you set the 
Crossover control, the higher in frequency the subwoofer will operate and 
the more its bass will “overlap” that of the system’s other speakers. This 
adjustment helps achieve a smooth transition of bass frequencies between 
the subwoofer and the other speakers for a variety of different rooms and 
subwoofer locations. NOTE: The Crossover control functions only when 
the Input Mode switch is in the “Normal” position. When the switch is 
in the “LFE” position the subwoofer’s built-in crossover and Crossover 
control are bypassed.

On/Standby indicator: This LED indicates whether the subwoofer is in 
the On or Standby state:

• When the LED glows green, the subwoofer is turned on.

• When the LED glows red, the subwoofer is in the Standby mode.

• When the LED is off, the subwoofer’s Power switch is set to “Off.”

Line In connectors: The signals from these connectors pass through 
the subwoofer’s internal low-pass crossover. When you’re connecting the 
subwoofer to the preamp or subwoofer outputs of a receiver/processor 
that does not have its own low-pass crossover network, use both Line In 
connectors. IMPORTANT: You must also set the Input Mode switch in 
the “Normal” position. If your receiver/processor has only one subwoofer 
output, you can use either the L or R connector.

LFE In connector: The signal from this connector bypasses the subwoof-
er’s internal low-pass crossover. When you’re connecting the subwoofer 
to the dedicated subwoofer output of a receiver/processor that has its own 
low-pass crossover network, use the LFE In connector. IMPORTANT: You 
must also set the subwoofer’s Input Mode switch in the “LFE” position.

Power switch: Set this switch in the “On” position to put the subwoofer in 
the Standby mode (the On/Standby LED lights red); set this switch in the 
“Off” position to turn the subwoofer off.

Power Cord connector: After you have made and verified all subwoofer 
connections described in this manual, plug the power cord into an ac-
tive, unswitched electrical outlet for proper operation of the subwoofer. 
DO NOT plug this cord into the accessory outlet found on some audio 
components.

Green: On

Red: Standby

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The performance of a subwoofer is directly related to its placement in the 
listening room and its physical position relative to the other speakers in the 
system. 

While it is true that in general our ears do not hear directional sounds at the 
low frequencies where subwoofers operate, when installing a subwoofer 
within the limited confines of a room, the reflections, standing waves and 
absorptions generated within the room will strongly influence the perfor-
mance of any subwoofer system. As a result, the specific location of the 
subwoofer in the room does become important to the amount and quality 
of bass that is produced.

For example, placing the subwoofer next to a wall generally will increase 
the amount of bass in the room; placing it in a corner (1) generally will 
maximize the amount of bass in the room. However, corner placement can 
also increase the destructive effect of standing waves on bass perfor-
mance. This effect can vary depending on the listening position – some 
listening positions may yield very good results while others may have far 
too much (or too little) bass at certain frequencies.

In many rooms, placing the subwoofer along the same plane as the left 
and right speakers (2) can produce the best integration between the sound 
of the subwoofer and that of the left and right speakers. In some rooms, 
the best performance could even result from placing the subwoofer behind 
the listening position (3). 

We strongly recommend that you experiment with placement before choos-
ing a final location for your subwoofer. One way you can determine the best 
location for the subwoofer is by temporarily placing it in the listening posi-
tion and playing music with strong bass content. Move around to various 
locations in the room while the system is playing (putting your ears where 
the subwoofer would be placed), and listen until you find the location where 
the bass performance is best. Place the subwoofer in that location.

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Set the subwoofer’s Power Switch to the “On” position. The subwoofer will 
automatically turn itself on when it receives an audio signal, and it will go 
into Standby mode after it has received no audio signal for approximately 
10 minutes. The subwoofer’s LED will glow green when the subwoofer is 
on and will glow red when the subwoofer is in Standby.

If you will not be using the subwoofer for an extended period – for 
instance, if you’re going on vacation – set the Power Switch to the “Off” 
position.

NOTE: The Crossover control functions only 
when the Input Mode switch is in the “Normal” 
position.

The Crossover control adjusts the subwoofer’s 
built-in low-pass filter crossover between 50Hz 
and 200Hz. The higher you set the Crossover 
control, the higher in frequency the subwoofer 
will operate and the more its bass will “overlap” that of the satellite speak-
ers. This adjustment helps achieve a smooth transition of bass frequencies 
between the subwoofer and the satellites for a variety of different rooms 
and subwoofer locations.

To set the Crossover control, listen for the smoothness of the bass. If the 
bass seems too strong at certain frequencies, try a lower Crossover con-
trol setting. If the bass seems too weak at certain frequencies, try a higher 
Crossover control setting.

Use the Level control to set the subwoofer’s 
volume. Turn the knob clockwise to increase the 
subwoofer’s volume; turn the knob counterclock-
wise to decrease the volume. Once you have 
balanced the subwoofer’s volume with that of 
the other speakers in your system, you shouldn’t 
have to change the Level control setting.

Notes on Setting Subwoofer Volume:

s

for films, while the ideal setting for films is too quiet for music. When 
setting the subwoofer volume, listen to both music and films with 
strong bass content and find a “middle ground” volume level that 
works for both. 

s

to place it in a different location. Placing the subwoofer in a corner will 
tend to increase its bass output, while placing it away from any walls 
or corners will tend to lessen its bass output.

The Phase switch determines whether the subwoofer 
driver’s piston-like action moves in and out in phase 
with the satellite speakers. If the subwoofer were to 
play out of phase with the satellite speakers, the sound 
waves from the satellites could partially cancel out the 
waves from the subwoofer, reducing bass performance 
and sonic impact. This phenomenon depends in part on the placement of 
all the speakers relative to each other in the room. 

Although in most cases you should leave the Phase switch in the “Normal” 
position, there is no absolutely correct setting for the Phase switch. When 
the subwoofer is properly in phase with the satellite speakers, the sound 
will be clearer and have maximum impact, and percussive sounds like 
drums, piano and plucked strings will sound more lifelike. The best way 
to set the Phase switch is to listen to music that you know well and to set 
the switch in the position that gives drums and other percussive sounds 
maximum impact.

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