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A Baltika 2nd-class subscriber loudspeaker has been producing the Kulakov Leningrad Plant and Porkhovskaya Relay Plant in the Pskov Region since 1954. AG is designed to work in a wired broadcast radio network, with a voltage of only 15 or 30 volts. The volume control in the first issues was carried out by switching the taps of the secondary winding of the transition transformer, later traditionally, with a potentiometer. Since 1956, the external design of the speaker has been changed.