Bernard Kardon

Dr. Sidney Harman marks Harman/Kardon's 50th anniversary with an autobiography By Janet Pinkerton Tinkering with two public address amplifiers while working for David Bogen Company in the early 1950s, Bernard Kardon and Sidney Harman built themselves a couple of custom audio systems, hooking up the modified amplifier to two borrowed turntables and some 12-inch diameter cone speakers to play their 78-rpm records at home. Their modifications were made with close attention to hum, distortion and frequency response, and "we loved the result, as did our friends and neighbors," Harman recalls in his forthcoming autobiography, Mind Your Own Business: A Maverick's Guide to

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