16-mm sound motion pictures : a manual for the professional and the amateur (1953)

Record Details:

Title:
16-mm sound motion pictures : a manual for the professional and the amateur
Date:
1953
Publisher:
New York : Interscience Publishers
Volume:
16-mm sound motion pictures : a manual for the professional and the amateur
Leaf #:
000509
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Niles Essanay Silent Film Museum
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
April 11, 2024
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PRACTICAL PROJECTOR PERFORMANCE 493 ™ -10 o UJ Q -20 Res stive Load s \ \ \ A S -30 10 0 -10 -20 -30 Resistive Load ■„L_ > \ \ s \ \ B Resistive Load »„ > c Voic Res istive Load " , E -10 -20 -30 ■ r i Resistive Load N \ \\ F 100 300 1000 1000 4000 4000 100 300 FREQUENCY, cp« Fig. 116B. Response-frequency characteristics of amplifiers of commercial sound projectors, including the scanning beam for machines A to F, inclusive. A warble film was run in the projector; the output of the amplifier was measured both across a dummy load resistor, and across the voice coil of the loudspeaker. Power output level was 1 watt at 1000 cps.