Acoustics – Diaphragm and enclosure – Reflex baffle
Patent
1990-03-27
1991-08-06
Brown, Brian W.
Acoustics
Diaphragm and enclosure
Reflex baffle
312 72, H05K 500
Patent
active
050369466
ABSTRACT:
A speaker system installable in a narrow space and capable of efficiently reproducing sounds of frequencies of up to about 45 Hz. The system comprises a speaker, and a speaker cabinet having a first chamber enclosing the rear side of the speaker and a second chamber enclosing the front side of the speaker. The first chamber is provided with at least one duct communicating at its forward end with a port portion in the cabinet. The second chamber has an aperture or apertures which are 0.02 to 0.25 in opening degree, i.e., in the ratio of the combined opening area of the aperture to the inside volume of the second chamber.
REFERENCES:
patent: 2232399 (1941-02-01), Manson
patent: 2627931 (1953-02-01), Flewelling
patent: 2808121 (1957-10-01), Goettner
patent: 3113633 (1963-12-01), Eberhardt et al.
patent: 3186509 (1965-06-01), Dudognon
Brown Brian W.
Sanyo Electric Co,. Ltd.
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