Diaphragm for loudspeaker

Details Diaphragm for loudspeaker Diaphragm for loudspeaker

H - Electricity

04

R

349/84

H04R 7/00 (2006.01) H04R 7/02 (2006.01)

Patent

CA 1183596

ABSTRACT OF THE INVENTION: A speaker diaphragm comprises a composite film prepared by combining a reinforcing material such as a mica, a needle or fiber filler, or talc, with a polybisphenol phthalate resin consisting of an aromatic dicarboxylic acid and a dihydric phenol.

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