Dynamic speaker

Details Dynamic speaker Dynamic speaker

1981-11-24

1984-03-20

Rubinson, G. Z.

1791155DV, 179119R, 179115R, 179181R, H04R 902

Patent

active

044382979

ABSTRACT:
A plurality of nodes of split vibration of a diaphragm are driven by a plurality of voice coils to prevent split vibration of the diaphragm. The voice coils are inserted between three or more layers of magnetic poles respectively and driven by a magnetic circuit including a plurality of magnets magnetized in the same direction as the vibration of the voice coils.

REFERENCES:
patent: 2897291 (1959-07-01), Burke
patent: 3665124 (1972-05-01), Sotome
patent: 3679833 (1972-07-01), Inoue
patent: 4252211 (1981-02-01), Matsuda et al.
patent: 4357498 (1982-11-01), Tsuchiya et al.

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