H - Electricity
04
R
26/125, 349/70
H04R 9/08 (2006.01) H04R 7/02 (2006.01) H04R 9/04 (2006.01) H04R 31/00 (2006.01)
Patent
CA 2011690
MICROPHONES ABSTRACT Disclosed is an improved dynamic microphone having increased acoustic sensitivity and a low level of shock or of handling sensitivity if fabrication techniques involving the use of diaphragm lamination employing a layer of metal mesh is combined with the use of a Neodymium Iron-Boron magnet having a "coin" shape (i.e., having a high ratio of diameter-to- height) and a voice coil having a diameter accepting the magnet. The invention also pertains to the method of making a dynamic microphone which comprises the steps of forming a diaphragm body of thin synthetic resinous sheet material of high tensile and flexural strength, forming a multi-layer central portion of thin synthetic resinous material and thin- wire metal mesh, contacting the central portion centrally of the diaphragm body and integrating while deforming both so that they are domed with the diaphragm body on the concave side of the central portion.
Finlayson & Singlehurst
Peavey Electronics Corporation
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