Speaker system

Acoustics – Diaphragm and enclosure – Reflex baffle

Patent

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Details

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

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