User`s manual

2-1
SECTION 2
INITIAL SET-UP AND INSTALLATION
Do NOT connect the CP45 to mains power until all connections have
been made and all jumpers have been checked or set.
If air-conditioning noise is audible in the theater, arrange for lubrication
of the motor, fan bearings, adjustment of belts and drives, and cleaning
of filters to reduce the ambient noise to a minimum. If the air-conditioning
cannot be repaired switch it off while the CP45 is being aligned.
2.1 Replacing an Existing Sound System
If the CP45 replaces an existing cinema sound system, play a typical film
before you remove the old system so you will have a benchmark for
comparison to the new system and as a check of the positioning of the
exciter lamp, the focusing of the sound track lens, and the condition of
the solar cell.
2.1.1 Before playing the film:
• Verify that the existing power amplifiers are in good working
order.
• Verify that the existing speakers are in good working order, and
that there is no loose or missing hardware, structural parts, or
damaged drivers in the enclosures.
• Verify that all wiring is present and properly connected and that
crossovers are operating and are correctly adjusted.
• Check the polarity of the speaker connections.
• Verify that there are adequate earth (ground) connections.
• Verify that radio interference problems are adequately resolved.
2.1.2 While playing the film:
While you run the film, listen carefully in various parts of the theater for
audio system problems:
• Hum.
• Noise, clicks, pops.
• Distorted sound.
• Poor tonal balance (lack of high-frequency or bass content).
These problems must be resolved before you can proceed with the new
installation.