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Since 1956, the Melody reel-to-reel tape recorder has been produced by the Tochmash Novosibirsk plant.
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The device is a copy of the German tape recorder "Grundig TK-5" with adjustment for domestic radio components and GOST conditions.
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The quality indicators of the device correspond to the tape recorders of the 4th group of GOST 8088-56.
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The tape recorder "Melody" is designed to work with magnetic tape type 2 or CH.
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Two-track recording, at a tape speed of 9.53 cm / sec, provides recording and reproduction of the frequency band from 100 to 6000 Hz.
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The THD of the through channel of the tape recorder at a rated output power of 1.5 W is 2.8%.
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The ratio of the total noise level of the end-to-end channel to the maximum recording level is -38 dB.
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The sensitivity of the tape recorder at a frequency of 1000 Hz: from a microphone of 0.5 mV, a pickup of 100 mV, a broadcasting receiver of 3 mV and from a transmission line of 10 V. The model provides an output to an external amplifier and a loudspeaker.
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The nominal output voltage is 775 mV at the output of the external amplifier at 30 kΩ, and at the output of the external loudspeaker 2.15 V at 3 ohms.
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The amplifier has a tone control, the range of which at a frequency of 6000 Hz is 20 dB.
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The "Melody" tape recorder has an erasure and bias current generator operating at a frequency of 50 KHz.
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An optical indicator is provided to set the nominal recording level.
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The reels hold 250 m of ferromagnetic tape, allowing recording on two tracks for 90 minutes.
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The tape can be rewound in forward and reverse directions;
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the fast forward time does not exceed 100 seconds.
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To reduce the wear of the magnetic heads, the tape is retracted during rewinding both from the eraser and from the universal head, and during playback from the eraser.
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To determine the amount of tape on cassettes, a counter is installed in the LPM.
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Since 1958, the plant made an attempt to change the name of the device to "Accord MG-9".
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Several vehicles were released and for some reason everything stopped.
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