Speaker enclosure

Details Speaker enclosure Speaker enclosure

1975-06-06

1976-09-07

Gonzales, John

Acoustics

Diaphragm and enclosure

With sound-absorbing means

181153, 181156, H05K 500

Patent

active

039789411

ABSTRACT:
An improved speaker enclosure for providing an acoustical balanced output with improved audio quality at low level reproduction. The enclosure includes a low sonic frequency pressure induced sonic wave amplification resulting from in phase reflection mechanically of re-induced resonant pressure waves. The invention comprises a speaker chamber of improved construction, the speaker being placed across one end, with the opposite end of the chamber being closed by an elastic diaphragm having an acoustic non-resonant tube centrally disposed protruding into the chamber, allowing the flow of air from inside the chamber enclosure to the outside atmosphere. The elastic diaphragm which is mounted at the chamber end opposite from the speaker mounting provides for mechanical reflection of low frequency acoustical waves, the dimensions of the speaker enclosure and the resonant tube being sized to produce an additive effect on low frequency acoustic waves which increases the dynamic amplitude of the low frequency response of the device. The non-resonant tube is disposed on the center axis of the chamber and is sized to allow a certain amount of air emission from the chamber itself.

REFERENCES:
patent: 1869178 (1932-07-01), Thuras
patent: 2713396 (1955-07-01), Tavares
patent: 2834423 (1958-05-01), Bradford
patent: 3037081 (1962-05-01), Carlsson
patent: 3371742 (1968-03-01), Norton et al.
patent: 3667568 (1972-06-01), Liebscher
patent: 3727719 (1973-04-01), Yando

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