Dolby Laboratories CP650 - Manual (Page 4)

Key Upgrades and Options
Cat. No. 735 Auditorium Assist Microphone
The Dolby Cat. No. 735 microphone, mounted permanently
and inconspicuously in the auditorium, works in conjunction
with the Auditorium Assist feature provided in all CP650s to
help you maintain consistently high performance from your
cinema’s sound system.
Once your room is initially
aligned, Auditorium Assist uses
the Cat. No. 735 to take
measurements of the frequency
response and level of each
channel, plus the room’s ambient
noise floor, which are then stored within the CP650 as your
Auditorium Reference. Thereafter, whenever you run
Auditorium Assist, it takes the measurements again and
compares them to the Auditorium Reference, all in less than
90 seconds. You are alerted to any discrepancies to help you
diagnose and resolve faults that may have occurred in the
speakers or other system components.
Cat. No. 790 Dolby Digital Surround EX/Digital Input Card
The Cat. No. 790 card, which is standard in the CP650,
CP650DC, and CP650XO configurations, provides
Surround EX decoding. It also provides four AES3 inputs
that accommodate up to eight channels of
digital audio (at 44.1 and 48 kHz)
from sources such as digital
cinema servers, disks, tape
playback systems, and satellite
or cable links.
Cat. No. 778 Digital Input/Output Card (not shown)
For dubbing studios requiring digital input and output,
the Cat. No. 778 Digital Input/Output Card can substitute for
the Cat. No. 790 to provide four AES/EBU digital inputs and
up to five AES/EBU digital outputs.
(The Cat. No. 778 disables the CP650’s analogue output.)
Cat. No. 791 Digital Crossover Card
Cat. No. 791 Digital Crossover
Card, which is standard in the
CP650XO, integrates two-
or three-way speaker crossovers
into the CP650 for your L, C, and R
screen speakers. It also provides outputs for full-range
Le and Re screen speakers.
All audio processing is in
the digital domain,
enabling extensive
settings and adjustments
via a PC software package
or built-in menus using the
front-panel main display.
As well as ensuring the
highest possible
performance from your screen speakers, the Cat. No. 791
eliminates the need for a stand-alone crossover unit.
(A Cat. No. 790 must be installed in the CP650 in order to
add the Cat. No. 791.)
For additional information, contact [email protected].
Dolby Laboratories, Inc., Wootton Bassett, Wiltshire SN4 8QJ, England Telephone (44) 1793-842100 Fax (44) 1793-842101
100 Potrero Avenue, San Francisco, CA 94103-4813 Telephone (1) 415-558-0200 Fax (1) 415-863-1373 www.dolby.com
Specifications subject to change without notice. Dolby and the double-D symbol are registered trademarks of Dolby Laboratories.
Auditorium Assist, EQ Assist, and Surround EX are trademarks of Dolby Laboratories. © 2007 Dolby Laboratories. All rights reserved.
W07/18898 Part No. 91891 Issue 5