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This installation and alignment manual covers the procedures necessary to ensure that the
theatre sound system is accurately aligned to standards that have been established by Dolby
Laboratories. Following these procedures will ensure that the theatre sound system will
accurately reproduce the soundtrack as the director and sound mixers intended.
The Dolby Cinema Processor is the central element of the theatre sound system. The
projector, the Dolby Processor, the power amplifiers and the loudspeakers, as well as the
auditorium itself, must be considered when aligning the system for optimum performance.
The system alignment procedure is divided into two parts—the A-chain alignment which
covers the projector, optical preamplifier, and Dolby noise reduction adjustments—and the B-
chain alignment which covers the portions of the system from the room equalization circuits
to the CP65 fader through to the loudspeakers.
The alignment instructions in this Manual are presented in three columns. The first column,
Action, contains a drawing of the item to be adjusted and a caption containing a brief
description of the action to be taken. The second column, Indication, contains a visual
indication of the desired results, where applicable. The third column, Notes, contains
information which amplifies and supplements the other two columns.
If you are familiar with alignment of other Dolby Cinema Processors you need to follow only
the information in the first two columns. If you are unfamiliar with the equipment or face special
situations that require complete information you should consult the Notes column.
CAUTION
This Installation Manual is for use by
qualified personnel only. To avoid
electric shock do not perform any
servicing other than that contained in
the Operator's Guide unless you are
qualified to do so.
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