Owner's Manual

VII. SET-UP CALIBRATION
The following procedure assumes your PSB subwoofer is installed and connect-
ed. If possible, work in a team with another person: one listening, one making
subwoofer-control adjustments.
1. Set Sub Volume to 0, Sub Cut-Off Frequency to 50Hz. Set any loudness,
bass and treble, and/or equalizer controls on your preamplier or integrated
amplier or receiver, or other components, to their nominal (midpoint or off)
positions.
2. Play a familiar compact disc, video soundtrack or other source that includes
substantial deep-bass content over an extended section. Your PSB dealer
can help you select a few such titles.
3. Gradually turn the Sub Volume control clockwise until you achieve natural
balance between the subwoofers deep-bass output and your main left and
right loudspeakers.
4. Slowly turn the Sub Cut-Off Frequency control clockwise to reach the best
mid-bass blend with your main left and right speakers. This will be the
point at which the upper bass retains solid impact and fullness. Boom or
muddiness is the result if the control is too high. A thin, “reedy” quality to the
mid-bass such as deep male voices (FM announcers; Darth Vader) is the
result if the control is too low.
5. Adjust the Phase control between 0° and 180° or 360° several times,
leaving it in the position that yields the fullest low to mid bass output. You
will now probably want to repeat steps 3 & 4 to double-check the subwoofer
blend.
Cycling through steps 3 & 4 several times with slightly different settings of both
the Sub Volume and Sub Cut-Off Frequency controls will help you get the most
musical performance from your PSB Subwoofer and your system. The best
combination is that which yields the most solid very-low-bass sounds, without
mid-bass boom or a gap in response between the subwoofer and the main
speakers.
The Sub Cut-Off Frequency and Sub Volume controls are interactive. Raising
the latter while lowering the former can have the effect of extending deep-bass
response somewhat, with a small sacrice in overall loudness capability (this
will still be well beyond the full-range loudness capability of most systems). In
general, for well-recorded acoustic music the lowest Sub Cut-Off Frequency
setting that yields a smooth transition between subwoofer and main speakers is
often the best choice, and will promote deeper low-bass extension.
Note: The Sub Volume control is not a bass-boost or volume control. It is a
set-and-forget adjustment, not intended for day-to-day adjustment. Use your
preamplier or receiver/integrated amp tone controls to modify program tonal
balance.
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