Loudspeaker

Details Loudspeaker Loudspeaker

1991-11-06

1992-11-24

Ng, Jin F.

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Having electrostatic element

381192, 381194, 381200, H04R 2500

Patent

active

051669846

ABSTRACT:
A loudspeaker comprising a T-shaped disc, a magnetic iron disc, a disc-shaped base, a voice coil, and a cone-shaped diaphragm, the two discs and the base having air holes to communicating with one another after being assembled together, the T-shaped disc being able to be rotated to change the position of its air holes to communicate with the air holes in the magnetic disc and the base in various degrees to change the volume of the air compressed by the diaphragm to flow through the holes.

REFERENCES:
patent: 4336425 (1982-06-01), Renkus
patent: 4608463 (1986-08-01), Burgess et al.

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