- Azimuth co-ordinator
The Azimuth coordinator was the first
quadraphonic sound system .Pink Floyd became the first band to use it in their early shows.The Azimuth coordinator was a multi-speaker pan pot system. It used four large
rheostat s housed in a large box, converted from 270 degrees rotation to 90 degrees. The system was operated by a joystick, which allowed the sound to be panned around the hall.The Azimuth coordinator was operated by keyboardist
Rick Wright .The original one was stolen after the first concert in
Queen Elizabeth Hall inLondon ,England . A second system was built for the concert at theRoyal Festival Hall in London onApril 14 ,1969 . The second one had two pan pots and four channels.References
* "The New Musical Express Book of Rock", 1975, Star Books, ISBN 0 352 300744
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