Apparatus and method for reduced distortion loudspeakers

Details Apparatus and method for reduced distortion loudspeakers Apparatus and method for reduced distortion loudspeakers

1999-04-06

2000-02-22

Dang, Khanh

Acoustics

Diaphragm and enclosure

With horn

181185, 381343, H05K 500

Patent

active

060269286

ABSTRACT:
Method and apparatus applied to loudspeakers of the type having an electrically driven diaphragm in an acoustic housing to reduce distortion from two sources. 1. Loss of high frequencies when sound from different regions of the diaphragm travel paths of different lengths and neutralize each other when they meet out of phase. 2. Noise generated primarily by the central region of the diaphragm when driven at high power. A compensating or phase plug is suspended axially within the housing adjacent the central region of the diaphragm. The plug, in cooperation with the walls of the housing, directs the sound through paths of uniform length to reduce loss of high frequencies. The plug has a sound absorbing inner portion adjacent the central portion of the diaphragm for absorbing the noise generated by the central portion at high power.

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