Magnetically suspended acoustical speaker

Details Magnetically suspended acoustical speaker Magnetically suspended acoustical speaker

1988-02-12

1989-08-22

Isen, Forester W.

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Having electrostatic element

H04R 904

Patent

active

048603708

ABSTRACT:
The diaphragm of an acoustic loudspeaker is suspended by means of the force of a magnetic field applied along a gravitational load axis to avoid direct or indirect physical contact with the support during drive of the diaphragm by an electrical signal. Displacement of the speaker along the gravitational axis is sensed to regulate operation of the amplifier through which the driving signal is applied to the voice coil supported by the diaphragm.

REFERENCES:
patent: 4243838 (1981-01-01), Coffey
patent: 4327257 (1982-04-01), Schwartz
patent: 4550430 (1985-10-01), Meyers
patent: 4609784 (1986-09-01), Miller

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