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INTERNATIONAL PROJECTIONIST
October 1931
ANNOUNCING the NEW Amplion
OCTOPHASE
heavy-duty dynamic unit
Employing the dynamic principle invented by Sir Oliver Lodge, the principle of the Piston Diaphragm taught by Edison, Stroh, Cooms, and others, and the principles of sound chamber design contributed by Eichmeyer, Tain tor. Tiger stedt, etc., this unit has a truly brilliant line of antecedents. It would not have been possible without the contribution of these great investigators. It is the contribution of Amplion engineers, working with modern facilities, however, coupled with the experience of the past that has given this unit unprecedented efficiency, wide frequency range, and capacity to reproduce tremendous volume with a clarity and tone quality not heretofore equalled.
LEGEND:
In the Octophase, the .irea above a scientifically domed piston diaphragm of great rigidity but extreme lightness, is divided into eight divisions with three sections in each division, twenty-four sections in all. Channel ways are provided for conveying the sound impulses from these twenty-four sections to the throat of the horn. Space and time relations are so designed that the impulses from each space reach the throat of the horn at the same moment in perfect synchronism. By means of this construction, there is realized great effi'ciency, greater frequency range and the ability to reproduce tremendous volume without blasting. Music is reproduced in its full range and speech is reproduced with a finesse that retains every shade of human emotion. From these eight divisions, OCTOPHASE derives its name.
The efficiency of this unit is from six to eight hundred per cent greater than that of cone speakers, and is the equivalent of an extra stage of amplification. High sound levels are obtained with less amplification permitting the operating of amplifiers below distortion levels, improving the quality and increasing tube life.
Other Amplion Products Are
MICROVOX AND TRANSIVOX, PORTABLE PUBLIC ADDRESS SYSTEMS, AMPLIFIERS, MICROPHONES, EXPONENTIAL HORNS, UNITS, Etc.
Sound System Apparatus
WRITE FOR FOLDER DESCRIBING UNIT AND ACOUSTIC HORNS
AMPLION PRODUCTS CORPORATION
38 WEST 2l8t STREET NEW YORK CITY