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Posted: 06:16:19 PM, 21/10/2013
The fix to troublesome psychedelics
In the 1970s, young partiers used the colour organs as a trendy way to bring psychedelic light shows (and possibly other psychedelic substances) into their home rumpus rooms. These were generally made up of four strings of miniature Christmas lights, each string the same colour (red, green, blue, yellow) arranged in a pattern behind a screen and housed in a thin, square box. Four audio bandpass filters (bass, lower mid range, upper mid-range, and treble) controlled SCRs, which caused each light string to pulse to the amplitude and frequency rhythms of music from a stereo system.
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