Projection Engineering, Volume 3, Issue 9 - Volume 4, Issue 91931 |
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Page 15
Output matching to loudspeaker By B. BROWN , B.SC.ENG . Satisfactory sound reproduction in theatres and in other auditoriums and halls necessitates correct matching of output tubes and loudspeakers 4 News for home movie makers Sound ...
Output matching to loudspeaker By B. BROWN , B.SC.ENG . Satisfactory sound reproduction in theatres and in other auditoriums and halls necessitates correct matching of output tubes and loudspeakers 4 News for home movie makers Sound ...
Page 12
... output trans- formers which isolate the loudspeaker from both the direct current and volt- age of the tube , and allow a proper re- lation of impedances in order that the most satisfactory results may be ob- tained along the lines ...
... output trans- formers which isolate the loudspeaker from both the direct current and volt- age of the tube , and allow a proper re- lation of impedances in order that the most satisfactory results may be ob- tained along the lines ...
Page 10
... output requirements . 2. Overall gain or amplification from input to output . 3. Required frequency characteristics . 4. Physical weight and size - the latter including any special shape re- quirements . Taking these requirements in ...
... output requirements . 2. Overall gain or amplification from input to output . 3. Required frequency characteristics . 4. Physical weight and size - the latter including any special shape re- quirements . Taking these requirements in ...
Contents
Projection | 3 |
Applicant Audit Bureau of Circulations | 2 |
TESTING EQUIPMENT FOR SOUND PROJECTION | 11 |
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acoustic address system amperes amplifier Amplion aperture apparatus battery Bell blimp Blue Seal broadcast camera CAMERON carbon Chicago CHICAGO GEAR Cineglow circuit coil color Company condenser connected Corp Corporation decibels designed device disc Electric exciter lamp feet field filament film frequency grid horns impedance inches industry input installation Laboratories lens lenses light valve loudspeaker machine manufacturers ment meter microphone monitor motion picture motor mounted multicoupler noise ohms operation optical output panel photoelectric cell pickup plate current portable position potentiometer production PROJECTION ENGINEERING projectionist projector public-address RACON radio radiovision RCA Photophone rectifier reproducing resistance rheostat ribbon screen Selsyn sound equipment sound film Sound Pictures sound recording sound reproduction sound system sound track sound-on-film speaker speed sprocket standard studio supply switch synchronism talkie television theatre tion transformer tube ture turntable unit vacuum tube volt voltage wire