Journal of the Society of Motion Picture and Television Engineers (1950-1954)

Record Details:

Title:
Journal of the Society of Motion Picture and Television Engineers
Date:
1950-1954
Publisher:
Easton, Pa. : The Society
Volume:
Journal of the Society of Motion Picture and Television Engineers
Leaf #:
00023
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Prelinger Library
Sponsor:
MSN
Coordinator:
Media History Digital Library
Date Added:
July 19, 2022
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PROVIDE RECESS IN BRACKET TO RECEIVE FEET ON LOUDSPEAKER TO PREVENT SLIPPING FOR THROUGH BOLTS AND CHANNEL OR ANGLE IRON SCREEN FRAME — FOR U BOLTS AND PIPE SCREEN FRAME TO SUIT PIPE SCREEN FRAME Fig. 4. Loudspeaker installation. LOCATE NEAR 8 ft wide by 10 ft deep by 7 ft high. It contains a rewind table, a little stowage space, record player, and so forth. The loudspeaker system is, however, completely different from any of the other systems used. Instead of the portable loudspeakers, a number of 12-in. loudspeakers in one-cubic-foot enclosures are mounted to the overhead and spaced approximately on 9-ft centers. Carriers of the Midway class have approximately 36 loudspeakers mounted to the overhead (Fig. 6). They are each tilted 20° toward the audience in order to minimize the reverberation which might be caused by the sound bouncing on the steel deck between rows of seats. As can be seen by the loudspeaker arrangement, space is allowed for a passageway in the middle of the audience. All loudspeakers are terminated in a switch control panel in the booth so that the quantity of loudspeakers on at any one time may be adjusted to the size of the audience. Advantage is taken of the sound deadening capacity of the audience and more loudspeakers are therefore connected as the crowd grows. This is a real advantage and allows maximum intelligibility from sound to be obtained. The loudspeaker system is powered by a 14 July 1953 Journal of the SMPTE Vol. 61