Slotted diaphragm loudspeaker

Details Slotted diaphragm loudspeaker Slotted diaphragm loudspeaker

1997-04-15

1999-03-16

Le, Huyen

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

381423, 381412, H04R 2500

Patent

active

058839674

ABSTRACT:
A loudspeaker comprises a diaphragm having an outer perimeter, a voice coil, a frame for supporting the diaphragm, and a motor stator providing a magnetic field in which the voice coil is supported. Current through the voice coil reciprocates the voice coil and the diaphragm coupled thereto. Ribs extend outwardly at the perimeter of the diaphragm to mount the voice coil to the perimeter of the diaphragm. The motor stator includes at least one inner flux return providing slots through which the ribs extend between the perimeter of the diaphragm and the voice coil. Alternatively, a loudspeaker comprises a diaphragm having an outer perimeter and a central axis defining between them a relatively inner region of the diaphragm extending outwardly from the axis and a relatively outer region of the diaphragm extending inwardly from the perimeter, a voice coil, a frame for supporting the diaphragm, and a motor stator providing a magnetic field in which the voice coil is supported. Current through the voice coil reciprocates the voice coil and the diaphragm coupled thereto. Ribs extend outwardly from the inner region and inwardly from the outer region to support the voice coil between the inner and outer regions. The motor stator includes at least one inner and/or outer flux return providing slots through which the ribs extend.

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