Loudspeaker having apertured acoustic impedance frontal...

Details Loudspeaker having apertured acoustic impedance frontal... Loudspeaker having apertured acoustic impedance frontal...

H - Electricity

04

R

349/70

H04R 1/00 (2006.01)

Patent

CA 1193357

Abstract of the Disclosure A direct radiating dynamic loudspeaker has an apertured impedance frontal loading element for improving its acoustic impedance. A planar sheet of non-rigid, fibrous air-permeable material has an apertured area and is positioned in front of the diaphragm of the loudspeaker. The sheet of air-permeable material is supported only at its periphery. A sheet of acoustically transparent material is bonded to the sheet of air-permeable material to cover the apertured area.

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