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CP100 Cinema Processor—A New Audio Control Center for the Motion Picture Theatre

A brief review of the history of optical soundtracks is given, leading up to the introduction in 1975 of the first commercial stereo optical film. It became apparent that existing cinema installations were not easily modified to add the second channel electronics, particularly in view of the wide range of existing systems ranging from monophonic optical to six-channel magnetic. In many cases, the acoustic performance of the theater was not commensurable either with the performance attainable on the film or with the standards expected by modern audiences. A new comprehensive control center was designed including stereo optical amplifier, noise-reduction modules, third-octave equalization, and special features necessary for cinema operation. Plug-in adaptors cater for known present and future cinema formats without the temporary wiring patch connections such changes usually entail.

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