An add-on facility for audio power amplifiers is described, by which nonlinear distortion products in the audible range of frequencies are reduced by a typical 25-30 dB. The improver uses the principle of nested differentiating feedback loops to increase the feedback around the amplifier. The improver also corrects phase nonlinearity in amplifiers, improves loudspeaker damping, increases isolation between stereo channels, and reduces hum, noise, and dc drift.

Author: Cherry, Edward M.
Affiliation: Department of Electrical Engineering, Monash University, Clayton, Victoria 3168, Australia
JAES Volume 29 Issue 3 pp. 140-147; March 1981
Publication Date: March 1, 1981 Import into BibTeX
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=3927

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