Build a High Performance THD Analyzer

Volume 65, July, August, September 1981

This three-part construction article described a high performance THD analyzer that an individual could build affordably. THD analyzers are traditionally expensive and out of reach for the average DIY audio enthusiast, yet they are indispensable in designing audio power amplifiers and other equipment. The unit described in this construction article is every bit as sensitive as the best commercial THD analyzers, with a THD+N measurement floor below 0.001 percent out to 20 kHz.

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