The circuit was designed using a four channel amplifier to produce quadraphonic sound: right front, left front, right rear, and left rear Quadraphonic – a sound production term wherein it uses four ...
Hear and Now: “Dismal failure" may be the kindest way to describe quad. To music fans for whom even cassette tapes are a quaint throwback, here's a real obscurity: Quadraphonic sound systems were an ...
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