The intricacies of adapting spring phonograph motors to tape transport applications, and the use of subminiature dry-battery record-reproduce amplifiers throw into focus some of the more obscure problems of tape machines and their somewhat unorthodox solutions. Described are characteristics of flyweight governors, a transport wherein the take-up drive is inherent in the tape drive, effects of curved tapes on open flange winding, a mechanical wow and flutter filter, and a method of judging the frequency response fidelity of any given microphone-amplifier combination.
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