Omnidirectional sympathetically driven sound reproduction device

Details Omnidirectional sympathetically driven sound reproduction device Omnidirectional sympathetically driven sound reproduction device

1975-05-02

1977-03-08

Stellar, George G.

Acoustics

Diaphragm and enclosure

H04R 102, H04R 132

Patent

active

040108210

ABSTRACT:
A sound reproduction device formed of an enclosure of expanded or foamed polymeric material, preferably polystyrene, which houses a centrally suspended speaker system, preferably a wafer multi-range speaker system. The enclosure is substantially closed and is acoustically excited by the speaker system to propagate sound thus requiring only a small ventilation opening to permit movement of the enclosure walls.

REFERENCES:
patent: 1856749 (1932-05-01), Desbriere
patent: 2426928 (1947-09-01), Gazlay
patent: 2476572 (1949-07-01), Wenzel
patent: 2853146 (1958-09-01), Coates
patent: 3164221 (1965-01-01), Rich
patent: 3194340 (1965-07-01), Kuwayama
patent: 3285364 (1966-11-01), Cohen
patent: 3443661 (1969-05-01), Vansciver
patent: 3596733 (1971-08-01), Bertagni
patent: 3718779 (1973-02-01), Schoengold
patent: 3778562 (1973-12-01), Wright

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