Loudspeaker systems

Details Loudspeaker systems Loudspeaker systems

1975-01-21

1977-02-15

Claffy, Kathleen H.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

181146, H04R 128

Patent

active

040083748

ABSTRACT:
A bass unit for a loudspeaker system which has a pair of loudspeakers mounted one behind the other in a casing to define a chamber of air therebetween. The loudspeakers are operated in phase with one another so that the pressure of air in the chamber remains substantially constant and the loudspeaker which is mounted on a front wall of the cabinet thus operates under substantially "ideal" conditions. Any changes in sound pressure within the chamber represent distortion components and are absorbed by a curtain of absorbent material in the chamber by a filling of absorbent material.

REFERENCES:
patent: 2496589 (1950-02-01), Marquis
patent: 2768702 (1956-10-01), Lowry
patent: 2922849 (1960-01-01), Uchida
patent: 2993091 (1961-07-01), Guss
patent: 3022377 (1962-02-01), Bobb et al.
patent: 3202773 (1965-08-01), Tichy

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