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Since 1946, the subscriber loudspeaker "DAG-1" produced the Leningrad mechanical plant "Leninets". Subscriber loudspeaker "DAG-1" (Dynamic Subscriber Loudspeaker, 1 model) is designed to work in a broadcasting network, but can be used in battery and network receivers as a loudspeaker. '' DAG-1 '' is assembled from a plywood case, 295x232x210 mm in size, where a loudspeaker with a 220 mm diffuser diameter, designed for an input power of 0.25 W, a step-down transformer and volume control is installed. The radio receiver is connected to the radio line with a 1.5 m long cord with a cord. The subscriber loudspeaker can operate from 30 or 15 volt lines, for which there are special jumpers in the AH.