How do you make four go into one? Very cleverly, it turns out.

A four-speaker surround sound system introduced in the 1970s that never caught on, primarily because of the recording technologies available at that time. Quadraphonic sound used two front and two ...

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 ...

These Quadraphonic albums have been digitized from analog four-track Quad mixes and are now available on Blu-ray discs. Each disc includes quadraphonic and stereo mixes presented in 24-bit/192kHz ...