Loudspeaker drive mechanism monitoring assembly

Details Loudspeaker drive mechanism monitoring assembly Loudspeaker drive mechanism monitoring assembly

1975-06-03

1976-12-14

Olms, Douglas W.

1791751A, H04R 2900

Patent

active

039977242

ABSTRACT:
A loudspeaker drive mechanism monitoring assembly includes a detection coil for detecting the operative state of a loudspeaker drive mechanism. The loudspeaker drive mechanism includes a permanent magnet assembly defining an air gap having a flux field therein and a voice coil adapted to receive a drive signal, the voice coil being disposed in the flux field to affect a change thereof in response to a drive signal applied thereto. The detection coil is wrapped around a portion of the permanent magnet or magnetic assembly and has a detection signal induced therein in response to the application of a drive signal to the voice coil.

REFERENCES:
patent: 3855415 (1974-12-01), Fox et al.

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