Trumpet horn speaker

Details Trumpet horn speaker Trumpet horn speaker

1982-09-29

1985-10-29

Rubinson, Gene Z.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

1791155R, 181179, H04K 906

Patent

active

045502293

ABSTRACT:
This speaker represents an improved trumpet horn speaker structure. A trumpet horn speaker is disclosed having a metallic heat sink, a lower magnetic pole mounted on the heat sink, a round permanent magnet mounted on the heat sink, an upper magnetic mounted on the heat sink, a damping bracket mounted on the heat sink, a plastic housing integrally mounted to the heat sink so that the upper magnetic pole, the lower magnetic pole and the round permanent magnet are thereby tightly secured to the plastic housing, the plastic housing providing a good waterproofing for the trumpet horn speaker and the metallic heat sink providing protection against over heating for the voice coil of the trumpet horn speaker.

REFERENCES:
patent: 3454729 (1969-07-01), Seebinger
patent: 3617654 (1971-11-01), Heidrich
patent: 3989909 (1976-11-01), Hodsdon et al.
patent: 3991286 (1976-11-01), Henricksen
patent: 4034165 (1977-07-01), Haeder
patent: 4138593 (1979-02-01), Hasselbach et al.
patent: 4205205 (1980-05-01), Babb

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