Installation manual

Dolby
®
Model CP650 Installation Manual Final Adjustments
7-14
7.14 Running Auditorium Assist
The Auditorium Assist
TM
feature, included in CP650 operating system software
version 2.0 and higher, provides an indication of the stability and characteristics of
your theatre’s speakers, crossovers, amplifiers, and auditorium acoustics. The first
time it is used, the frequency response and sound level of each speaker are checked
and stored in the CP650 memory. Whenever Auditorium Assist is subsequently
selected, all channels are measured and compared to these reference settings.
Auditorium Assist also checks and compares the level of the ambient noise floor in
the auditorium to the reference level originally stored.
7.14.1 Operation
Activate the Auditorium Assist reference measurement function after the first B-chain
alignment is finished, and again after any subsequent changes in the EQ settings or
sound equipment have been made. The initial measurements should be performed
after the CP650 theatre installation is complete: with seats, carpet, screen, and room
treatment all installed. Auditorium conditions should include the following:
• Curtains and masking fully open
• Auditorium unoccupied
• Doors closed
• Heating and air conditioning system switched to a known and repeatable
condition