RECORDING_AMPLIFIER

Published:2009/7/14 5:32:00 Author:May | From:SeekIC

Used in high-quality stereo cassette deck operating from AC line or battery. Uses active RC circuit R16-R17-C12-C13-R19-VR2-C15 to provide required high-frequency recording characteristic for use with Garrard CT4 recording head; component values may have to be changed for other heads. C18 (3.9 nF) is switched in to change from basic 70-μs recording characteristic to 120μs. C17 and R27 provide new cassette-standard bass preemphasis at 3,180μs. Recording level is chosen as 0 VU at 660 Hz. Output feeds VU meter through silicon diode, Article gives all other circuits of cassette deck and describes operation in detail.-J. L. Linsley Hood, Low-Noise, Low-Cost Cassette Deck, Wireless World, Part 1-May 1976, p 36-40 (Part 2-June 1976, p 62-66; Part 3-Aug. 1976, p 55-56).



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