Subwoofer speaker system

Details Subwoofer speaker system Subwoofer speaker system

1990-12-03

1992-09-15

Hix, L. T.

Acoustics

Plural diaphragm sound sources

Plural chambers

181156, 181199, H05K 500

Patent

active

051479869

ABSTRACT:
A subwoofer system for providing acoustic energy is provided. The subwoofer or full-range speaker enclosure is divided into at least three chambers. A first speaker acoustically couples the first chamber with the third chamber. A second speaker acoustically couples the second chamber with the third chamber. A first port acoustically couples the first chamber to the exterior of the enclosure. A second port acoustically couples the second chamber to either the first chamber or the exterior of the enclosure. The speakers are driven out-of-phase with respect to the third chamber so as to maintain the third chamber in a substantially constant-pressure state.

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Speaker Builder, "Ultimate Isobarik", Feb., 1990, p. 60.

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