Diaphragm for acoustic equipment

Details Diaphragm for acoustic equipment Diaphragm for acoustic equipment

G - Physics

10

K

400/2015, 181/6

G10K 13/00 (2006.01) C08G 63/672 (2006.01) C08G 81/00 (2006.01) H04R 7/02 (2006.01)

Patent

CA 1100665

9/4 ABSTRACT OF THE DISCLOSURE A diaphragm for acoustic equipment molded from a composition mainly consisting of a polyester-polyether block copolymer prepared by condensing a polytetramethylene- terephthalate with a poly(tetramethyleneoxide)glycol or any other polyester-polyether block copolymer. This diaphragm for acoustic equipment has an excellent low- pitched sound reproducing performance and is further featured by its flat acoustic pressure-frequency characte- ristics.

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