Uploaded November 2023 | Updated September 2026, 2 weeks ago

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Quadraphonic sound promised so much in 1970 but by the end of the decade it had been and gone. Surely it was the next great thing after high fidelity stereo records just a few years earlier? Why did it fail despite being available on three different recording mediums and over the air, how did the whole thing play out, and how can you enjoy those 1970s quadraphonic recordings today with equipment you likely already have at home?

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Sources:
en.wikipedia.org/wiki/Stereophonic_sound
en.wikipedia.org/wiki/High_fidelity
en.wikipedia.org/wiki/LP_record
en.wikipedia.org/wiki/Quadraphonic_sound
quadraphonicquad.com
en.wikipedia.org/wiki/Dynaquad
en.wikipedia.org/wiki/Hafler_circuit
en.wikipedia.org/wiki/LP_record
youtube.com/watch?v=tEyPPYuTkcw
en.wikipedia.org/wiki/DVD
en.wikipedia.org/wiki/Compatible_Discrete_4
surrounddiscography.com/quaddisc/quadQVP.htm
en.wikipedia.org/wiki/UD-4
en.wikipedia.org/wiki/FM_broadcasting
en.wikipedia.org/wiki/Super_Audio_CD

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