MEZ-6 1950
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The tape recorder "MEZ-6" in 1950 was developed by the Moscow Experimental Plant for subsequent release. The tape recorder, designed as a console, contains a tape drive mechanism, a recording amplifier and a playback amplifier. External circuits are connected to the tape recorder using connectors, and the device (including amplifiers) is controlled from the top panel of the console using simple transfer devices. Amplifiers assembled according to the original schemes. They differ in high quality indicators and are economical in nutrition. Each amplifier is mounted together with a selenium rectifier. Due to the special design of the screen of the reproductive head, it was possible to avoid the use of an antiphonic loop. The kinematic diagram of the tape recorder contains three electric motors. In terms of such electroacoustic indicators as frequency response, non-linear distortion, self-noise level, the MEZ-6 tape recorder exceeds the requirements for class 1 equipment. The pass-through frequency characteristic of the channel recording-playback in the range from 30 ... 12000 Hz has an unevenness of no more than ± 1.5 dB. The harmonic coefficient is equal to 0.8% at a frequency of 400 Hz with 100% modulation of the sound carrier. The level of intrinsic noise in the end-to-end channel will erase the old record minus 60 dB. The speed of movement of the magnetic tape 770 mm / sec. The duration of one roll of tape is 22 minutes. The device is powered from the AC mains with a voltage of 220 V. The power consumed from the mains does not exceed 130 watts. The quality indicators of the tape drive mechanism are the same as in the previously released tape recorder MEZ-2. The head unit is removable and is equipped with a head position adjustment.
Information from collection of Valery Khartchenko