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The subscriber loudspeaker Donbass AG-308 from I quarter of 1989 was produced by the Makeevsky factory of household products Impulse. AG "Donbass AG-308" is a standard subscriber loudspeaker for radio transmission lines with a voltage of 30 volts, replacing the loudspeaker Donbass-307. The frequency range is 160 ... 6300 Hz. Sound pressure in the band AF - 315 ... 4000 Hz - 0.25 Pa.