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Since the fall of 1979, the acoustic system "3AC-505" was produced by the Berd Radio Plant. The speaker is designed for high-quality sound reproduction in conjunction with household radio equipment of the third or fourth grade. The loudspeaker was sold both independently and in a complete set with radio equipment, for example, the radio "Vega-323-stereo". Since 1983, according to the new GOST 23262-83, the AU has changed its name to "3ÐС-305". Price AS - 35 rubles.