Method of making broad band dynamic loudspeaker

Details Method of making broad band dynamic loudspeaker Method of making broad band dynamic loudspeaker

1977-12-08

1980-02-19

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29605, H04R 3100

Patent

active

041887115

ABSTRACT:
A dynamic loudspeaker which operates over a wide band of audio frequencies is disclosed. The speaker includes a speaker cone and voice coil structure of very low mass. A configuration of ribs on the cone and dust cap is important to both high and low frequency performance. The rear suspension for the speaker is a bearing on the voice coil structure. The bearing encircles and slides on the magnetic center pole of the speaker. A method of fabricating the low mass coil structure is disclosed, including forming the bearing surface by heat shrinkage of a low friction tape.

REFERENCES:
patent: 4053975 (1977-10-01), Olbrich et al.

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