9
Subwoofer Collection
Volume
This knob adjusts the subwoofer’s volume. Turn it clockwise for full volume. Note that the subwoofer
level control in an AV receiver will also affect how loud the subwoofer plays. With most AV receivers,
setting this knob at about halfway up (the 12 o’clock position) will provide a volume level that allows
the subwoofer’s level to be matched with that of the main speakers.
Phase
Use this knob to adjust the phase of the subwoofer relative to the main speakers. This will help
achieve a smoother blend of the sound of the subwoofer and the main speakers. To adjust it, sit in
the chair or couch where you usually listen, and play some bass-heavy music with the phase knob
set to 0. Now play the same music with the knob set to 180. If you hear a difference, experiment with
different settings until the bass sounds smoothest from your chair.
Crossover
Use this knob to set the highest bass frequency the subwoofer will play, from 50 to 150 Hz. If you’re
using an AV receiver or surround-sound processor, set this knob at 150 and use the crossover built
into the receiver or processor. If the subwoofer is installed in a stereo system, set this knob as close as
possible to the lowest rated bass extension of the main left and right speakers.
Inputs
These jacks accept a signal from an AV receiver, a surround-sound processor, a stereo receiver or a
stereo preamp. In a surround-sound system, use an RCA audio interconnect cable (not included) to
connect the receiver or processor’s subwoofer output to the input jack labeled LFE. In a stereo system,
connect two RCA cables (not included) from the preamp or the receiver’s preamp output to the jacks
labeled R and L.
USB 5VDC output
This jack outputs 5-volt DC power, which can be used to power accessories such as a wireless
subwoofer receiver/transmitter system.
