Planar pattern voice coil audio transducer

Details Planar pattern voice coil audio transducer Planar pattern voice coil audio transducer

1975-11-13

1977-07-19

Stellar, George G.

H04R 900

Patent

active

040370615

ABSTRACT:
An improved planar audio transducer or loudspeaker is described. It has a plastic diaphragm with a current carrying coil on one surface formed of aluminum conductors. A magnetic field is provided at the conductors from rows of magnets spaced from each other and mounted on opposite sides of the membrane on a pair of outer iron support members. A predetermined positioning of the magnets and a predetermined magnet and diaphragm spacing is provided by magnet mounting grooves in the iron support members and by surrounding the magnets with non-metallic frame members sandwiched between the iron magnet support members and the membrane.

REFERENCES:
patent: 3066200 (1962-11-01), Pavlak
patent: 3141071 (1964-07-01), Rich
patent: 3164686 (1965-01-01), Tibbetts
patent: 3898598 (1975-08-01), Asahi
patent: 3919498 (1975-11-01), Beer
patent: 3922504 (1975-11-01), Kishikawa et al.

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