Sound projection system

Details Sound projection system Sound projection system

H - Electricity

04

R

181/7

H04R 1/34 (2006.01) H04R 1/30 (2006.01) H04R 7/12 (2006.01) H04R 27/04 (2006.01)

Patent

CA 1076033

ABSTRACT A sound projecting system comprising means defining a longitudinally extending acoustic channel which is acoustically open at a front end of the channel and acoustically closed at a rear end and at sides of the channel, a loudspeaker having a cone diaphragm operating into the channel at the rear end of the channel, and a longitudinally extending member mounted within the channel directly in front of, and in alignment with, the loudspeaker so as to restrict the free space within the channel, the cross-sectional area of said member varying along its length.

286716

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