Rectangular magnetic circuit for speaker

Details Rectangular magnetic circuit for speaker Rectangular magnetic circuit for speaker

1979-11-21

1983-10-25

Stellar, George G.

H04R 902

Patent

active

044121040

ABSTRACT:
A magnetic circuit for a loudspeaker characterized in a substantially rectangular parellelepiped yoke provided with a hollow penetrating two opposed lateral faces thereof has a substantially rectangular parallelepiped sintered magnet mounted therein of a specified size and composition and having a recoil permeance coefficient from 1.0 to 1.2, a polepiece connected to the top surface of said parallelepiped sintered magnet forms a magnetic air gap with the end of a through hole formed in the top face of said rectangular yoke for a movable coil.

REFERENCES:
patent: 2320402 (1943-06-01), Blessing
patent: 2353550 (1944-07-01), De Forest et al.
patent: 2532414 (1950-12-01), Levy
patent: 3651283 (1972-03-01), Doschek

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