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The tape recorder "MAG-3M" was developed at VNIIZ and has been produced since the beginning of 1950. It is intended for single-track recording and reproduction of phonograms on magnetic tape "C" or "1", 6.5 mm wide on coils 330 m each in living conditions. Speed "‹"‹of a broach of a tape of 45,6 cm / sec. LSM - three-engine. The LSM detonation coefficient is 0.3%. The operating frequency range is 70 ... 7000 Hz. The tape recorder has a 3GD-3 loudspeaker, which also reproduces the band 70 ... 7000 Hz. The recording and playback enhancer is separate, which allows you to control the quality of the recorded signal during recording. Rated output power ULF 1.5 watts. Power consumption 180 watts. Microphone in the set of type "SDM". Dimensions of the tape recorder 320x635x430 mm. Its mass is 55 kg.