Vintage audio: vinyl electrophone Jubilee (Yubileyny RG-3). Made in the USSR in 1957 by the Leningrad Sovnarkhoz.
Radiogramphone ”RG-3” consists of a player and a bass amplifier with a loudspeaker placed in a portable case. The RG reproduces recordings from conventional and long-playing records at a speed of 78 and 33 rpm. There is an auto-stop, with the help of which the disc stops automatically at the end of the sound track of the disc. Piezoceramic pickup with universal head. Three-stage amplifier on lamps 6N9S and 6P6S. The rectifier has a 6Ts5S lamp. The amplifier has a volume and treble tone control. Operating frequency band 150…7000 Hz. Rated output power 1 W, with SOI – 1.5%. Loudspeaker 1GD-9 is installed in the cover of the case. Power consumption 60 W. WG dimensions – 160x260x375 mm, weight 5.7 kg. In 1960, the WG was modernized. Lamps of type 6N9S, 6P6S were replaced by 6N2P and 6P14P, transformers were reduced, the circuit was changed. The loudspeaker was replaced by 1GD-18 (1GD-28). The EPU has been simplified, a speed of 45 rpm has been introduced. RG became known as RG-3M. The frequency response has improved from 100 to 8000 Hz, the weight has decreased to 4.5 kg, the power consumed from the network is up to 40 watts.
