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1945 Theatre Catalog, 4th Edition, Page 341 (317)

1945 Theatre Catalog, 4th Edition
1945 Theatre Catalog
1945 Theatre Catalog, 4th Edition, Page 341
Page 341


1945 Theatre Catalog, 4th Edition, Page 341

quency speakers, designed for use with the Number 7 amplifier.

The No. 2826 speaker is designed for the largest of auditoriums, a multi-cellular speaker system utilizing four lowfrequency speakers and two high-frequency speakers.

The No. 2815 speaker is a new development in dynamic speakers, utilizing a dispersion array, giving excellent frequency response over 60 degrees in a vertical planHlS degrees in a horizontal plane-in front of the speaker, thus reducing beam effect of high requencies. Bass reflex cabinet gives excellent base reinforcement.

INTERNATIONAL PROJECTOR CORPORATION

There is a Simplex sound system specifically designed to meet the needs of medium and large theatres of every seating capacity. The engineering simplicity and the many standby features embodied in the design of these systems guarantees uninterrupted performance of the highest quality.

Four Star Sound Systems

The high standards created and maintained during the past 30 years enable users of Simplex Four Star sound to give their patrons the finest possible entertainment at a moderate cost.

Simplex Four Star sound in design and construction meets all the requirements of theatre owners for thoroughly modern equipment. It is so fiexible it can readily accommodate dual track stereophonic recordings, push-pull and any of the proposed forms of the controlled track or other changes when approved by the motion picture industry. The quality of all Simplex systems is the same, and patrons of small theatres as well as large, can derive all the enjoyment which is the result of true sound reproduction.

The specifications shown herewith will permit theatre owners to meet their budgets and theatre requirements by installing the correct number of amplifiers to provide the proper output and equipment with the number and types of loudspeakers to supply capacity and distribution.

Specifications

The type E Simplex Four-Star rotary stabilizer sound heads have a 10-watt undistorted output. The monitor amplia fier and monitor loud speakers have a 2-way permanent magnet speaker system with one high- and one low-frequency unit, one 1 x 3 exponential high-frequency horn and one low-frequency folded exponential horn.

The type A-15 Simplex Four-Star rotry stabilizer sound heads have d. c. excitation, 15-watt undistorted output, monitor amplifier, and monitor loud speaker, and a 2-way permanent magnet speaker system with one high-and one low-frequency speaker unit, one multicellular exponential high-frequency horn, and one folded exponential low-frequency horn.

The type A-30 Simplex Four-Star rotary stabilizer sound heads have d. c. excitation, with 30vwatt undistorted output, monitor amplifier, and monitor loud

1945--THEATRE

CATALOG

speaker, as well as dual emergency volume control amplifiers, 2-way permanent magnet speaker system with one highand one low-frequency speaker unit, one multi-cellular exponential high-frequency horn, and one folded exponential lowfrequency horn.

The Type B-3O Simplex Four-Star rotary stabilizer sound heads have (1. c. excitation, with 30-watt undistorted output, monitor amplifier and monitor loud speaker dual emergency volume control amplifiers, 2-way permanent magnet speaker system with two high-frequency and two low-frequency permanent magnet speakers, one multi-cellular exponential high-frequency horn with double throat and two folded exponential lowfrequency horns.

The Type B-60 Simplex Four-Star rotary stabilizer sound heads have d. c. excitation, 60-watt undistorted output, monitor amplifier and monitor loud

speaker, dual emergency volume control amplifiers, 2-way permanent magnet speaker system with two high-frequency and two low-frequency permanent magnet speakers, one multi-cellular exponential high-frequency horn with double throat, and two folded exponential lowfrequency horns.

The Type 0-60 Simplex Four-Star r0tary stabilizer sound heads have d. c. excitation, 60-watt undistorted output, monitor amplifier and monitor loud speaker, dual emergency volume control amplifiers, two high-frequency and four low-frequency energized speakers, one multi-cellular exponential high-frequency horn with double throat, and two folded exponential low-frequency horns.

Features

Film motion past the scanning light beam is controlled by the well-known rotary stabilizer principle.

ALTEC-LANSING'S MODEL A-6 VOICE OF THE THEATRE



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1945 Theatre Catalog, 4th Edition, Page 341