Tube microphone '' Rca Victor SHF-7 ''.

Electric players and tube electrophonesForeignThe tube electric microphone "Rca Victor SHF-7" has been produced since July 1957 by the radio corporation "Rca Victor" in the USA. 5 radio tubes. 4 speeds of rotation of a disk: 78, 45, 33 and 16 rpm. Automatic change of plates, from 5 to 12. Push-pull output stage. Rated output power 3.5 W, maximum up to 10 W. 3 loudspeakers. Operating frequency range - from 200 ... 7000 Hz, up to 90 ... 11000 Hz (depends on the plates and disc speed). Separate tone controls. Supply voltage - AC 115 volts, 60 Hz. Power consumption dependent, from 40 to 65 W.