Sound collecting and concentrating device for attaching to the b

Details Sound collecting and concentrating device for attaching to the b Sound collecting and concentrating device for attaching to the b

1991-06-13

1993-04-27

Gellner, Michael L.

Acoustics

Diaphragm and enclosure

With horn

181156, 181159, 181179, 181192, H05K 500

Patent

active

052064654

ABSTRACT:
This invention relates to a loudspeaker having at least one sound collecting tubes attached to the rear of the speaker frame or the sound collecting tubes forming the speaker frame for collecting and directing sound waves emitted from the rear of the speaker diaphragm. The sound collecting tube is particularly useful for directing and boosting sound waves emitted from the rear of the speaker which is otherwise dissipated or absorbed by the loudspeaker housing material or insulation. In addition, conventional or specialized sound horns may be readily attached to the outlet end of the sound collecting tubes which can direct sound waves emitted by the speaker to any desired direction.

REFERENCES:
patent: 2228886 (1941-01-01), Olson
patent: 3993162 (1976-11-01), Juuti
patent: 4439644 (1984-03-01), Bryney, III
patent: 4524846 (1985-06-01), Whitby
patent: 4616731 (1986-10-01), Robinson
patent: 4655315 (1987-04-01), Saville
patent: 4807293 (1989-02-01), Weckler
patent: 4930596 (1990-05-01), Saiki et al.
patent: 4969196 (1990-11-01), Nakamura

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