Loudspeaker

Details Loudspeaker Loudspeaker

2006-05-05

2008-10-28

Le, Huyen D (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S403000, C381S423000

Reexamination Certificate

active

07443996

ABSTRACT:
A high efficiency loudspeaker without a damper is provided. The loudspeaker includes magnetic circuit having a magnetic gap and a voice coil member, which has movable coil, disposed in the magnetic gap of the magnetic circuit. The loudspeaker also includes a diaphragm, whose inner peripheral part is linked with the voice coil member, outside the magnetic gap and a frame linked with an outer peripheral part of the diaphragm via a first edge. An inner peripheral part of a suspension holder is linked with the voice coil member at a linked position which is closer to the magnetic circuit than a linked position of the diaphragm and the voice coil member. An outer peripheral part of the suspension holder is linked with a frame via a second edge. The first edge and the second edge are substantially symmetrical with each other about a median of a first edge and a second edge.

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Supplementary European Search Report issued Jan. 10, 2007 in International (PCT) Application No. PCT/JP0205722, which the present application is the U.S. National Stage.

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