Sojuz 2000
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Since the beginning of 2000, the subscriber loudspeaker "Soyuz" has produced OJSC "Saransk Instrument-Making Plant". The compact souvenir subscriber's loudspeaker "Soyuz" is intended for reproducing radio broadcasts of a low-frequency channel of a 30-volt wireline radio network Technical characteristics of the loudspeaker: Rated operating voltage in the radio network of 30 volts. The volume control range is at least 32 dB. Rated output power not less than 0.05 watts. The weight of the subscriber's loudspeaker is not more than 0.3 kg.
Information from collection of Valery Khartchenko