Richardson's handbook of projection (1930)

Page scan 000225 from Richardson's handbook of projection

Record Details:

Title:
Richardson's handbook of projection
Date:
1930
Publisher:
New York : Chalmers Publishing Company
Volume:
Richardson's handbook of projection
Leaf #:
000225
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
August 01, 2024
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MANAGERS AND PROJECTIONISTS 1149 1* _ FSMfri-£ LFFT STttmifr RCA Photophone Loudspeaker Mounting. Showing a bank of four RCA Photophone moving coil cone loudspeakers mounted on a rack beside the screen. It will be noticed that the angle of the speakers with respect to the front of the theatre is varied. The loudspeakers are arranged alternately at fortyfive degrees, fifteen degrees, straight ahead, etc. The number of loudspeakers in a bank depends upon the size of the theatre. Installations vary from four to twenty-four loudspeakers, utilizing two banks, one on each side of the screen. The loudspeaker racks are either rigidly attached to the screen and flyed with it, or flyed separately. In some instances the racks are mounted on rollers and pushed off to one side in the wings when not in use. Figure 416.