WILSON AUDIO Subsonic, Installation And Care Manual, Page: 23 / 60

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W i l s o n A u d i o S p e c i a l t i e s
1. If your playback electronics have signal level metering facil-
ities, use track 1 (1 kHz tone) to assure equal signal levels to
both left and right loudspeakers. The Controller’s output level
should be turned all the way down.
2. Assure that the left and right loudspeakers are in phase by us-
ing track 4, (BLN - bandwidth limited noise). The noise should
appear to come from exactly between your left and right loud-
speakers.
3. If you have either a spectrum analyzer or a sound pressure lev-
el (SPL) meter, you should measure and document the in-room
response of your L & R loudspeakers, running full-range, with-
out subwoofer contribution. This will give you a baseline mea-
surement. While you can measure each channel individually, it
is more expedient to measure both simultaneously using the
(Mono) test signals. Measurement locations for the microphone
should include one at ear height at the main listening loca-
tion. Additional locations could include: two meters on either
side of the primary listening position; halfway between the
listening position and the back wall. These readings must be
averaged together. Expect measurements taken close to walls
to show substantially more low frequency energy than those
taken near the center of the room. Use the dB-C weighting, or