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The radio gramophones Yubileiny-Stereo and Yubileiny-Stereo (RG-4C) from 1957 and from 1959, respectively, were produced by Leningrad Plant No. 779.
The Yubileiny-Stereo RG had 3 disk rotation speeds: 33, 45 and 78 rpm.
In each of the two speakers, 4 speakers are installed.
Amplifiers are assembled on 7 lamps with push-pull output stages.
The model has a tone control for bass and treble.
Rated power 2x5 W, maximum 2x12 watts.
The frequency range of the path, including speakers - 70 ... 12000 Hz.
THD at a rated power of 0.5%.
A radio gramophone cost 1,200 pre-reform rubles, with an average salary of 400 rubles, therefore, due to low demand, about 900 devices were produced, then it was modernized and cheapened.
The new model has been produced since 1959 with the same name, but with the index `` RG-4C ''.
This device was considered the first domestic stereo radiogramophone (electrophone).
It had the following parameters: rated output power 2x2 W;
frequency range 100 ... 10000 Hz;
THD - 3%.
Power consumption 60 watts.
The kit fits in three packs.
The speakers are placed in two packages 375x260x93 mm in size and weighing 3.6 kg.
The third package contains an electrophone with dimensions of 375x260x150 mm and a weight of 6.4 kg.
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