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The color organ "Electronics CM-301" has been produced since 1983. It is intended for the light-dynamic accompaniment of phonograms reproduced by tape recorders, electrophones, electromusical instruments and transmitted over a radio network. The CMU consists of an electronic unit and a demonstration unit, which includes a perforated screen and 4 lamps illuminating it with light filters. Main technical characteristics: Rated input voltage: for connecting a broadcasting line 30 V, universal 0.25 V. Number of channels 4. Channel frequency range colors: red 0 ... 300 Hz, green 300 ... 3000 Hz, blue above 3000 Hz . Yellow color - background, works from 0 to 300 Hz and above 3000 Hz, as well as in the absence of a signal. Power consumption from the network up to 450 watts. The device dimensions are 314x197x88 mm. Weight 6.5 kg.