Electrodynamic speaker

Details Electrodynamic speaker Electrodynamic speaker

1982-09-23

1985-05-28

Rubinson, Gene Z.

1791155R, 179117, 179119R, H04R 904

Patent

active

045202370

ABSTRACT:
In an electrodynamic speaker comprising a vibrating plate, a voice coil secured to the vibrating plate, a magnetic circuit portion having a soft magnetic member and a magnet and having a magnetic gap, a frame for supporting the peripheral portion of the vibrating plate and the magnetic circuit portion, and a lead substrate. The voice coil is secured to the vibrating plate after the vibrating plate is secured to the frame and then the magnetic circuit portion is assembled on the frame. As a result of it, the lead terminal of the voice coil can be connected to the lead substrate through the notch portion of the frame in the same process as mounting the voice coil on the vibrating plate wherey the factor of variation in the magnetic gap dimension which affects the efficiency of the magnetic circuit is reduced.

REFERENCES:
patent: 3133162 (1964-05-01), Coen
patent: 3138864 (1964-06-01), Coen
patent: 3430007 (1969-02-01), Thielen
patent: 3453400 (1969-07-01), Coen
patent: 4143537 (1979-03-01), Ribatto
patent: 4158756 (1979-06-01), Keezer
patent: 4376233 (1983-03-01), Kamon et al.

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