Transistor network electrophone `` Concert-3 ''.

Electric record players and electrophones on semiconductorsDomesticSince the beginning of 1967, the "Concert-3" transistor network electrophone has been produced by the Moscow experimental plant VNII "Elektroprivod" and the Moscow plant "Agregat". Electrophone "Concert-3" (type EF-66) is designed for playing regular and long-playing records at speeds: 16, 33, 45 and 78 rpm. The speaker consists of two loudspeakers 1GD-28 and can be carried up to 1 meter. Rated output power 1, maximum 3 W. The range of reproducible frequencies is 100 ... 10000 Hz. Power consumption from the network is 30 W. EF mass - 7 kg. During the release, the electrophone has undergone changes in its electrical circuit and design.