Mir 1965
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The subscriber loudspeaker "Mir", presumably since 1965, has been producing the Leningrad Radio Products Plant No. 3. "Mir" is a standard subscriber loudspeaker designed to operate on a 30 volt broadcast radio network. Type 0.15GD-III-6. The frequency range is 160 ... 5000 Hz.
Information from collection of Valery Khartchenko