Loudspeaker device

Details Loudspeaker device Loudspeaker device

1977-08-25

1979-02-13

Tomsky, Stephen J.

Acoustics

Diaphragm and enclosure

181156, 181151, 181163, H05K 500, G10K 1300

Patent

active

041390750

ABSTRACT:
A loudspeaker device comprises a bass reflexing duct formed on an enclosure on which the loudspeaker unit is provided, a passive radiator provided on the enclosure; an acoustic impedance body provided between at least one of the duct and passive radiator and the loudspeaker unit, so that the resonance frequencies of the duct and the passive radiator are different from each other thereby to markedly improve the low acoustic compass characteristic thereof.

REFERENCES:
patent: 2713396 (1955-07-01), Tavares
patent: 3037081 (1962-05-01), Carlsson
patent: 3101810 (1963-08-01), Doschek
patent: 3412824 (1968-11-01), Armstrong
patent: 3780824 (1973-12-01), Prince

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