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The color organ prefix "Spectrum-10" from 1978 was produced by the Orel plant K.M. Rudneva. CMP is used for color accompaniment of a sound reproduced from a tape recorder and an electrophone. In the amplifier path, the signal is divided into 3 frequency bands. From the generated signals, there is control over the glow of three groups of incandescent lamps, on which colored glass filters are put on - red on the bottom row, green - on the middle one and blue - on the top one. The light of the lamps passes through a common diffuser and the colors mix. To make the relief appear color shades, the console should be installed in the least lit corner of the room. The number of main channels - 3. Maximum power consumption - 450 watts. Power per channel - 75 watts. Red illumination light corresponds to a signal with a frequency of less than 400 Hz; the blue color of the illumination corresponds to the frequency band lying in the range of 250 ... 2500 Hz; green light corresponds to a signal with a frequency of at least 1000 Hz. The number of backlight channels is 1. The power of the backlight channel is 25 watts.