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Studio reel (bobbin, roll) tape "MEZ-15" produced presumably since 1954 the Moscow Experimental Plant and the Gorky Plant. Petrovsky. One-track recorder "MEZ-15" is designed to work in the studios of radio broadcasting and television. The tape recorder has four heads (recording, universal, reproducing, erasing) and separate amplifiers. Magnetic tape type C or 1, wound in rolls of 1000 meters. The speed of pulling the magnetic tape is 76.2 cm / sec. Detonation 0.2%. The time of recording or playing a soundtrack on a single track is 22 minutes. The applied radio tubes are 6Ð8С (2), 6Ð9С (2), 6Ц6С (2). The output voltage at the linear output of 3 V (600 Ohm). The operating frequency range is 30 ... 15000 Hz. Power consumption of 300 watts from the network. The mass of the tape recorder is 100 kg.