Acoustics – Plural diaphragm sound sources – With sound-asborbing means
Patent
1986-02-06
1987-09-01
Fuller, Benjamin R.
Acoustics
Plural diaphragm sound sources
With sound-asborbing means
181199, H05K 500
Patent
active
046902449
ABSTRACT:
A loudspeaker enclosure comprises a rectangular box-like housing (100) consisting of top (102) and bottom walls (104), front and back walls (106), left (108) and right (110) side walls, each of the walls being formed by a wooden panel, a hollow stiffening structure (200) located within the housing (100) and extending from the top wall (102) to the bottom wall (104), from the front wall to the back wall (106), and from the left side wall (108) to the right side wall (110), the hollow stiffening structure (200) comprising a first set of spaced-apart stiffening panels (1,2,3) arranged with their planes substantially parallel to each other and substantially parallel to the walls of a pair (102, 104) of opposed housing walls, and a second set of spaced-apart stiffening panels (4,5) arranged with their planes substantially parallel to each other and substantially parallel to the walls of a different pair (108, 110) of opposed housing walls, the stiffening panels (1,2,3) of the first set being secured to stiffening panels (4,5) of the second set and intersecting the substantially orthogonally so that the stiffening panels, together with the housing walls define a multiplicity of rectangular parallelepipedal cells (250), holes (13,23,33,43,53) being provided in the stiffening panels to provide communication between adjacent cells.
REFERENCES:
patent: 2031500 (1936-02-01), Olney
patent: 2866514 (1958-12-01), Weathers
patent: 3696886 (1972-10-01), Armstrong
patent: 3953675 (1976-04-01), Babb
patent: 4054748 (1977-10-01), Balogh
B & W Loudspeakers Limited
Fuller Benjamin R.
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