Projection engineering (Sept 1929-Nov 1930)

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1MOMSSSW1 Western Editor Evans E. Plummer Advisory Editor Donald McNicol Editor M. L. Muhleman Associate Editors James R. Cameron Austin C. Lescarboura John F. Rider Vol. 1 iNiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiniiiiiiiiiiiiiu iiiiiiiiiiiiniiiiiiiiiiuiiiiiiiiiiiiiii iiiiiiiiiiiiiiiiiiiiiiiiiiiiniiiiiiiiiiiiii October, 1929 Number 2 CONTENTS Editorial 4 Reproducing Machine for Picture and Sound By H. PfannenstieM 15 How and Why the Fader By Horatio W. Lamson 17 Characteristics of Peck Amplifiers By F. A. Jewell 19 General Report of the S. M. P. E 21 Considerations in the Design of Audio-Frequency Apparatus By C. H. W. Nason 22 Television Coming, But as Distinct Unit By D. E. Replogle 24 The New Wide Film Arrives By James R. Cameron 26 Electromagnetic Sound Pickups By George B. Crouse 27 A Few Facts About Filters By John F. Rider 37 Departments News of the Industry 39 New Developments 41 Index of Advertisers ' 50 Publishing Aviation Engineering Radio Engineering Projection Engineering Published Monthly by Bryan Davis Publishing Co., Inc. Publication Office — Lyon Block — Albany, N. Y. Chicago Office — 333 No. Michigan Ave., Charles Farrell, Mgr. Cleveland Office — 10,515 Wilbur Ave., James Munn, Mgr. San Francisco Office — 318 Kohl Bldg. 5 Los Angeles Office — New Orpheum Bldg., \ Cupit and Birch 846 So. Broadway ) Application for entry as second class mail matter at the Post Office, Albany, N. Y., pending. 52 Vanderbilt Ave. New York City Bryan S. Davis, President James A. Walker, Secretary G. C. B. Rowe, Advertising Manager Yearly subscription rate $2.00 in U. S. and Canada; $3.00 in foreign countries. 111111,11111111 '" I|;|NI "" ' ' " "''''"''"''"'"'""""'iiiiiiiii'iiiiiiNiiiiMiiiNiiiiiw^ hiiiii iiiiiiiii iiiiiniiiiiiiiiiii mi itiiniiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii