Tetrahedral loudspeaker

Acoustics – Sound-modifying means – Housing or enclosure

Reexamination Certificate

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Details

C381S345000

Reexamination Certificate

active

07931116

ABSTRACT:
In some embodiments, a subwoofer enclosure includes a substantially triangular first face, second face, third face, and fourth face, a first corner at an intersection of the first, second and third faces, a second corner at an intersection of the first, second and fourth faces, a third corner at an intersection of the first, third and fourth faces, a fourth corner at an intersection of the second, third and fourth faces, wherein an angle between the first corner and a midpoint between the third corner and the fourth corner, having the second corner as its vertex, is substantially ninety degrees, wherein an angle between the third corner and the fourth corner, having the second corner as its vertex, is substantially ninety degrees, and a subwoofer driver attached to the third face, having a free air resonant frequency less than one hundred Hertz.

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TOA Corporation, “TOA Designer Speaker F-10B.” Date unknown, retrieved on Feb. 7, 2009 from http://www.toa-corp.co.uk/user/data/F-10B.pdf.
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