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Journal Article

On RIAA Equalization Networks

Authors: Lipshitz, Stanley P.

Journal of the Audio Engineering Society · Volume 27 · Issue 6 · pp. 458–481 · June 1979

Abstract

Most current disk preamplifiers, including some very expensive models, have audibly innacurate RIAA equalization. This severely limits any conclusions that can be drawn from A/B testing of such preamplifiers. These errors are due in part to the perpetuation in print of incorrect formulas for the design of the RIAA equalization networks commonly employed. Other factors include the existence of an uncorrected high-frequency zero too close to the top of the audio band in many noninverting designs, and failure to take adequate account of the limited available loop gain. The situation is surveyed, and tables taking into account the above problems are given for the design of both inverting and noninverting RIAA deemphasis and preemphasis circuits. Examples are furnished to illustrate the various configurations.

Details

Publication
Journal of the Audio Engineering Society
Volume
27
Issue
6
Pages
458–481
Publication date
June 6, 1979
Affiliation
Department of Applied Mathematics, University of Waterloo, Waterloo, Ontario, Canada (See document for exact affiliation information.)
Type
Journal Article