Projection engineering (Jan 1932-Mar 1933)

Record Details:

Title:
Projection engineering
Date:
Jan 1932-Mar 1933
Publisher:
New York : Bryan Davis Publishing Co., Inc.
Volume:
Projection engineering (Jan 1932-Mar 1933)
Leaf #:
00041
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Library of Congress, MBRS, Moving Image Section
Sponsor:
Library of Congress, Motion Picture, Broadcasting and Recorded Sound Division
Coordinator:
Media History Digital Library
Description:
Date Added:
December 14, 2023
Something wrong or inaccurate about this page? Let us Know!

Thanks for helping us continually improve the quality of the Lantern search engine for all of our users! We have millions of scanned pages, so user reports are incredibly helpful for us to identify places where we can improve and update the metadata.

Please describe the issue below, and click "Submit" to send your comments to our team! If you'd prefer, you can also send us an email to mhdl@commarts.wisc.edu with your comments.




We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.

Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.

COVERING A 4000 SEAT HOUSE WITH A PORTABLE AMPLIFIER Leo Salkin, expert showman and manager of The Oriental, one of Chicago's great Loop theatres, wanted a stunt for one of his shows. He needed a microphone offstage, a speaker in an ordinary radio cabinet and an amplifier with sufficient "bang" to cover his 4,000-seat house. An S-M 686 Portable Address System did the job with power to spare. It is an ideal showman's kit. Can be used to announce coming shows on the sidewalk or in the lobby. Can be used for voice with an organ and innumerable other ways. Also for banquets, speeches, dances, etc. The Famous Oriental Theatre in the Loop, Chicago Leo Salkin, Manager Silver-Marshall now offers Power Amplifier panels and equipment for any class of service or type of system. Write to Mr. Gray for literature and the new November catalog. The 686 Portable Address Unit weighs 75 lbs. complete, contains a five-tube push-pull Pentode Amplifier having a gain of 90 DB and an undistorted output of 7 to 8 watts. It is entirely free from hum. Its fidelity curve shows a variance of only 2 DB, plus or minus, from 40 to 8,500 cycles. Built into the case (half of which serves as an excellent baffle) is a 10' 2" S-M 855B Electro Dynamic Speaker with 25 feet of cord. The speaker may, however, be operated at any distance from the amplifier. A double-button microphone completely mounted and with 12 feet of cord is included. Cost (110-120V, 50-60 cvcle), complete, with tubes, etc., $119.70 net. 25 cycle slightly higher. SILVER-MARSHALL, Inc. 6401 West 65th Street, Chicago Canadian Division: 75 Sherbourne St., Toronto Export Division: 41 Water St,, New York City, U. S. A.