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Applying the Transistor in a Stereophonic Tape System

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A complete semiconductor, stereophonic tape playback system applies modern solid state devices to a new concept of music appreciation that is receiving more interest every day. This system consists of a stereophonic tape deck, two tape preamplifiers, two 10-watt amplifiers, two 16-ohm speaker systems, and a common power supply. Transistors offer many advantages in high fidelity circuits, since there is no problem with microphonics or hum pick-up from filaments as we have with tubes. Transistors are inherently low impedance devices and thus offer better matching to magnetic pick-ups and loud speakers, for more efficient power transfer.

JAES Volume 7 Issue 3 pp. 133-134, 140; July 1959
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AES - Audio Engineering Society