Operating instructions

1-6
WARNING
The CP45 was adjusted initially by a
specially-trained engineer so that your
theatre would have the same standard
playback characteristics as the dubbing
theatres in which all Dolby encoded films
are mixed. This results in the most accurate
reproduction possible. Never attempt to
adjust any controls within the CP45 except
those specified in this manual.
All other controls are for use by a trained
engineer when the CP45 is first installed or
repaired. Adjusting these controls requires
the use of special test equipment.
Misadjusting these controls can have an
adverse effect on the sound in your theatre
and will require a service call to restore
proper operation. The first thing to do
when you have a problem is to consult
Section 3 Troubleshooting, and not
randomly adjust these specialized controls.
In addition, do not adjust any of the controls
on the other audio equipment in your
theatre sound system such as power
amplifiers, which have been preset by the
installer. For example, misadjusting the
power amplifier gain controls can cause
channel imbalance and/or too much power
amplifier noise. Those controls have been
set by the installer for correct channel
balance and so that the playback level in
the theatre is correct with the fader set to 7.
If a satisfactory level can only be achieved
with the fader set to some other level, the
gain controls on the power amplifiers have
been touched and have now to be
recalibrated by a service engineer.