Bipolar speaker

Details Bipolar speaker Bipolar speaker

1998-09-29

2000-04-04

Le, Huyen

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

H04R 2500

Patent

active

060470771

ABSTRACT:
A loudspeaker (10) having at least one speaker assembly (12) that includes a diaphragm (18), a voice coil (20) for driving the diaphragm; and a magnet assembly (22) positioned adjacent the voice coil for producing a magnetic flux in the vicinity of the voice coil is disclosed. The magnet assembly includes a plurality of small magnets (32) arranged in a generally circular array. The magnets are each cylindrical in shape and are formed of a permanent magnet material such as neodymium. The loudspeaker preferably includes a pair of speaker assemblies (12,14) mounted in an opposed relationship to create a bipolar, omni-directional loudspeaker. A vent (16) is positioned between the speaker assemblies for introducing air into and passing air out of the speaker assemblies. The vent is designed for maximizing the amount of air flow into and out of the speaker assemblies to provide enhanced venting while eliminating any air noise during operation of the loudspeaker.

REFERENCES:
patent: 4472605 (1984-09-01), Klein
patent: 4665550 (1987-05-01), Haas
patent: 5524061 (1996-06-01), Mooney et al.
patent: 5802189 (1998-09-01), Blodget

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