Copland Billy The Kid. Japanese Discrete 4 Channel Quad LP Ormandy Philadelphia
$
38
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Description
Beautiful RCA Discrete 4 quadraphonic LP pressing of Aaron Copland's Billy The Kid / Appalachian Spring Performed by Philadelphia Orchestra conducted by Eugene Ormandy. Hefty fold open sleeve does not have the obi, but otherwise in excellent condition. The exterior retains it's original gloss and has no damage or marks.The interior of the gate-fold does have some minor age related yellowing but has no marks or other damage. Comes with black and white Japanese language insert. The virgin vinyl is flawless on both sides and still has it's original luster. This item will ship from Texas in a sturdy cardboard package within 24 hours of purchase.
The follow is courtesy of Wikipedia
Compatible Discrete 4 (CD-4) or Quadradisc (not to be confused with compact disc) was introduced in May 1972 as a discrete quadraphonic system created by JVC and RCA in 1971.[1] Record companies who adopted this format include Arista, Atlantic, Capricorn, Elektra, Fantasy, JVC, Nonesuch, A & M, Reprise and Warner.[2]
This was the only fully discrete (all channels recorded separately) quadraphonic phonograph record system to gain major industry acceptance.
CD-4 was responsible for major improvements in phonograph technology including better compliance, lower distortion levels, pick-up cartridges with a significantly higher frequency range, and new record compounds such as Q-540, which were highly anti-static.
A typical CD-4 system would have a turntable with a CD-4 cartridge, a CD-4 demodulator, a discrete four-channel amplifier, and (ideally) four full-range loudspeakers.[3] Some manufactures built the CD-4 demodulator into complete four-channel receivers.
Simply put, CD-4 consists of four recorded signals (LF, LB, RB, RF) using a coding matrix similar to FM broadcast stereo multiplexing.
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