All-Purpose Sound Reproduction |
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| Written by: Showmen’s Trade Review, October 15, 1955 | Date: 01.07.2008 |
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Caption (Picture missing): The Altec developed Switching Relay Equalizer rack, permitting
knob-control switching from TODD-AO, to Cinema-Scope 4-track, to
Perspecta, to optical print sound tracks, is shown at right. Above, Fred
Pfeiff, of TODD-AO, is seen operating the relay switch at front of the
Altec panel. Climaxing numerous technical contributions its engineering staff has made to the sound phases of the TODD-AO system, Altec Service Corporation last week put into production its Switching Relay-Equalizer which provides compatibility with all existing sound systems. The device allows the projectionist to select the sound operation for TODD-AO, CinemaScope 4-track magnetic, Perspecta and standard optical prints. The Altec panel provides individual equalization and level balancing controls for 20 magnetic tracks. On a two-projector installation, the facilities allow setting the six-TODD-AO channels on each projector for dentical quality; likewise the four CinemaScope channels on each machine. |
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in 70mm reading: Todd-AO The Todd-AO Projector Showmen’s Trade Review, October 15, 1955: Oklahoma! in Todd-AO Todd-AO Magna Theatres Todd-AO Corporation Philips Collaborated On Projector Design Todd-AO Projection and Sound Six track recording equipment All-Purpose Sound Reproduction Rodgers & Hammerstein II Six track recording equipment |
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