Speaker diaphragm

Details Speaker diaphragm Speaker diaphragm

H - Electricity

04

R

402/203

H04R 7/00 (2006.01) C08G 63/18 (2006.01) H04R 7/02 (2006.01)

Patent

CA 1092746

ABSTRACT OF THE DISCLOSURE A speaker diaphragm molded from a poly-bisphenol phtha- late type plastic film having ester linkages and prepared from an aromatic dicarboxylic acid such as isophthalic acid or terephtha- lic acid or a mixture thereof and a bifunctional phenol such as bisphenol A. This speaker diaphragm has desirable low-pitch sound reproducing performance and a flat acoustic pressure-frequen- cy characteristic and improved transducer efficiency.

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