Vintage 1957 Loudspeaker Book Bolotnikov Cinema Audio Technology USSR

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Title: Cinema Loudspeakers (Кинотеатральные громкоговорители)
Author: I. M. Bolotnikov
Publisher: State Publishing House "Iskusstvo" (Art), Moscow, 1957
Title page information:
Library of the Cinema Mechanic series
Revised and enlarged edition of the 1952 book "Loudspeakers for Sound Cinema"
1957
Physical specifications:
Softcover
Format: 84 x 108 1/32
Printed sheets: 6.6 (conventional 10.8)
Authorized sheets: 9.9
Print run: 10,000 copies
Catalog number: Sh05783
Price: 4 rubles 50 kopecks
Contents (chapter titles):
From the Author (p. 3)
Chapter I – General Information on Loudspeakers (p. 5)
Chapter II – Direct-Radiator Electrodynamic Loudspeakers (p. 26)
Chapter III – Horn-Type Electrodynamic Loudspeakers (p. 60)
Chapter IV – Two-Way Loudspeakers (p. 84)
Chapter V – Operation of Loudspeakers (p. 110)
Chapter VI – Repair of Loudspeakers (p. 144)
Notable technical content:
Includes a description of the thermionic high-frequency loudspeaker (ionophone) by Telefunken (West Germany) with a frequency range of 1–20 kHz
Features a schematic with a Tesla transformer
Covers multi-channel stereo systems for widescreen cinema
Condition: (to be added by seller)
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