PSB Speakers CHS212 owner manual IX. Set-upCalibration, D. Using Multiple Subwoofers see , page

C. Connecting Stereo Equipment With High/Speaker Level (see Figure 5, page 17):

You also can get excellent sonic results by connecting the High/Speaker Level Output of your receiver, integrated amplifier or power amplifier to the High Level Input of the subwoofer. Use standard speaker cable and maintain polarity + , as well as right and left side.

D. Using Multiple Subwoofers (see Figure 6, page 18):

Particularly in difficult rooms with difficult layouts, using two subwoofers is an alternative to smooth, as well as increase bass response. One subwoofer can be located to increase response, with the second subwoofer located to smooth response. The wiring of two subs in a system is illustrated in Figure 6 (the two subs do not need to be identical). Please refer to Section V, Multiple Subwoofers for further information.

IX. Set-up Calibration

The following procedure assumes your PSB subwoofer is installed and connected. If possible, work in a team with another person: one listening, one making subwoofer-control adjustments.

A.Set Sub Volume to 0, Sub Cut-Off Frequency to 50Hz. Set any loudness, bass and treble, and/or equalizer controls on your preamplifier or integrated amplifier or receiver, or other components, to their nominal (midpoint or off) positions. Ensure the LFE Input/Crossover bypass switch is set to off unless the subwoofer is connected to the LFE/Subwoofer output of your receiver/processor and the output is low pass filtered.

B.Play a familiar compact disc, LP, or video soundtrack that includes substantial deep-bass content over an extended section. Your PSB dealer can help you select a few such titles.

C.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.

D.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.

E.Switch the Phase control between 0° and 180° several times, leaving it in the position that yields the fullest low to mid bass output. You will now probably want to repeat steps C & D to double-check the subwoofer blend.

Cycling through steps C & D 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.

As you will discover, 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 sacrifice 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 preamplifier or receiver/integrated amp tone controls to modify

program tonal balance.

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