Driver for a horn radiator

Details Driver for a horn radiator Driver for a horn radiator

1998-10-13

1999-11-16

Le, Huyen

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

381340, 381343, 381412, H04R 2500

Patent

active

059871482

ABSTRACT:
A driver for use with a horn radiator includes a heat conductive hollow base that confines an upwardly opened cavity for receiving a yoke. The yoke has an outer wall surface that defines a first clearance with the base, and an inner wall surface which is formed with a through hole that extends to the outer wall surface. A permanent magnet is received in the yoke, and defines a second clearance with the inner wall surface of the yoke. A flux guiding plate is superimposed on the permanent magnet, and is disposed in the yoke to define a gap with the inner wall surface of the yoke. The second clearance is communicated fluidly with the first clearance via the through hole, and is in fluid communication with the gap. A diaphragm has a top portion disposed above the flux guiding plate, and an annular extension extending into the gap. A voice coil is connected to the annular extension of the diaphragm, and is disposed in the gap. An annular coupling member, which is adapted to be coupled to the horn radiator, is disposed above the diaphragm, and is secured to the base.

REFERENCES:
patent: 4550229 (1985-10-01), Hwang
patent: 5894524 (1999-04-01), Kotsatos et al.

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