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Century 21 Theatre Gets Newest
Of Sound Systems in Ampex Installation
The Ampex Corp. has delivered its 3000th theatre sound system a sixchannel. 960-watt installation in the new circular-domed Century 21 theatre in San Jose. Calif.
Ampex. a pioneer in magnetic tape recording and sound reproduction, entered the theatre sound field in 1953. Working closely with motion
THEATER -IN -THE -ROUND —
The new circular-domed Century 21 theatre in San Jose, Calif., is designed for the ultimate in acoustics, with the 940 seat auditorium encircled by a 960-watt, six-channel sound system by Ampex. The new installation is the 3000th theatre sound system by Ampex Corp., which has similar equipment in theatres around the world.
picture studios, the company developed the first true stereo sound systems for theatres. The system was first used in theatres across the country in conjunction with the showing of the motion picture "The Robe." one of the first pictures filmed with stereophonic sound tracks.
The system, which used a magnetic recording head to pick up sound from the magnetic track on the film, offered a number of technical advancements over optical sound track or disc recording. The advantages of four channel, multi-directional systems with the superior sound produced by magnetic recording even after hundreds of runs attracted the movie industry.
Later, in 1955. Ampex developed a new magnetic sound system with six channels for the motion picture "Oklahoma." This system earned an "Oscar" for Ampex from the Motion Picture Academy of Arts and Sciences.
Since then virtually all motion pictures have utilized the magnetic recording sound track technique. The Ampex sound systems have become a standard of the industry.
Cinerama, which uses the Ampex system exclusively, utilizes up to eight channels of sound. The Century 21 theatre in San Jose employs five Voice of the Theatre A4X speakers on stage and eight Voice of the Theatre A7-500 speakers surrounding the audience. Each of eight amplifiers has a rating of 120 watts with a total of 960 watts.
The quality of today's theatre sound system is indicative of a mark
PROJECTION ROOM — Ampex amplifiers and allied equipment (foreground) have been installed in the projection room of the new Century 21 theatre in San Jose, Calif., to power the 960-watt six-channel sound system.
ed trend in growth and sophistication in this field, according to Al Lewis, manager of Ampex's theatre sound system operations. Theatre owners and motion picture executives, more keenly aware than ever before of the competition for entertainment dollars, are turning to wide screen productions and the multi-channel multispeaker sound systems that accompany them as offering new dimen
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International Projectionist