Electro-acoustic transducer with free edge diaphragm

Details Electro-acoustic transducer with free edge diaphragm Electro-acoustic transducer with free edge diaphragm

1980-05-05

1982-01-26

Stellar, George G.

1791155R, 179181R, H04R 900

Patent

active

043130402

ABSTRACT:
In a loudspeaker, a suitably formed edge part is provided around the periphery of the diaphragm to form a certain gap between the edge part and an edge receiving part which has an annular recess corresponding to the configuration of the edge part, so that the pressure gradient in the gap is in balance with the surrounding pressure gradient, with the result that the air going in and out of the gap can be substantially neglected.

REFERENCES:
patent: 1656579 (1928-01-01), Farrand et al.
patent: 1733013 (1929-10-01), Hibacsko
patent: 1738575 (1929-12-01), Greswold
patent: 4122314 (1978-10-01), Matsuda et al.
patent: 4239090 (1980-12-01), Dahlquist

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