Specifications

5-4
B-Chain Alignment
5.3 Room Equalization
Equalization is performed using a real-time analyzer built into the CP500. The
adjustment for the five full range channels involves two steps - coarse adjustment
and fine adjustment, using a 27-band equalizer for each of the screen channels (left,
center, and right), and a 9-band equalizer for the two surround channels (left
surround and right surround). Subwoofer channel equalization involves setting the
frequency, "Q", and level of "cut". The real-time analyzer screen displays a standard
response curve. The ideal setting is reached when the room response readings fall
on or very close to this standard curve.
OFF
POWER AMPS
Set all the gain controls on all power
amplifiers to a known repeatable setting.
The preferred setting for most
amplifier gain controls is maximum.
If a different setting is required in order
to optimize the noise performance of the
system, the controls should be locked in
position or marked clearly.
Position calibrated microphones in the
theater. Whenever possible, use multiple
microphones and a multiplexer.
(Suggested microphone positions for use
with a multiplexer are shown in
Section
9.2.
) For a single microphone, the
recommended position is shown in the
diagram – 2/3 of the way from the front
speakers to the rear – but off the axis of
the center speaker – 5 feet off the floor
level – and angled 45 degrees upward
toward the screen.