Sub-woofer module

Details Sub-woofer module Sub-woofer module

1996-07-29

1998-02-24

Lee, Eddie C.

Acoustics

Diaphragm and enclosure

181153, 181155, 181156, 181191, 181197, 181199, H05K 500

Patent

active

057214018

ABSTRACT:
Disclosed is a sub-woofer module which has a simple construction and provides a good low-frequency bass in compliance with an audience's taste. The sub-woofer module has an enclosure, a baffle board which separates the enclosure into first and second chambers, and a speaker coupled to the baffle board. The baffle board is engaged with a screw shaft and moves upward and backward along the screw shaft to vary the volume of the first and second chambers. A reverse-conical cap is disposed above the enclosure to permit the upwardly projected sound to be projected in 360 degrees, and a conical base is disposed below the enclosure to permit the downwardly projected sound to be projected in 360 degrees. The audience can listen to sound of the same quality regardless their position in relation to the sub-woofer module.

REFERENCES:
patent: 1685050 (1928-09-01), Gerns
patent: 2073747 (1937-03-01), Koroncai et al.
patent: 2123442 (1938-07-01), Stone
patent: 2759553 (1956-08-01), Bosley
patent: 4165797 (1979-08-01), Spetalnik
patent: 4348549 (1982-09-01), Berlant
patent: 4630303 (1986-12-01), Tanno
patent: 5105905 (1992-04-01), Rice
patent: 5304747 (1994-04-01), Hale, II
patent: 5418338 (1995-05-01), Kim

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