Subscriber loudspeaker `` ETP '' (0.25GD-III-2).

Subscriber loudspeakers.DomesticThe subscriber loudspeaker "ETP" (0.25GD-III-2) has been produced since 1951 by the Leningrad artel "Electrotechpribor". AG was produced in three versions: 1st and 2nd versions (both 1951) are made in a wooden case with a metal grill on the front panel. The third version was produced since 1952, this version was in a plastic case. The Artel trademark can be seen on the volume control knobs and on the back of the loudspeakers. Only unlike the previous trademark, "LNG" was replaced by "LGR" and these letters were taken out of the rhombus. One of the buildings was used for the production of its AG "Leningradets" in 1952 by another Leningrad Artel "Radist". The cases are the same both in size and design, but the components are different. Any AG is designed to listen to one program transmitted over a wired radio network with a voltage in the 30 V line. Power consumption from the radio network is 0.25 W. The range of reproducible sound frequencies is 200 ... 5000 Hz. The dimensions of the first two AG variants are approximately 200x160x950 mm. Weight 2 kg.