Typical Tube Amp used in Soviet HiFi :)
Soviet radio devices used typical schematics for same class. They called it “unified chassis" or “unified frame". Here is part of the schematics from II class radio+phone player. Power output, according to manual, is only 1.5W, but it played very loud!
Big Circuit diagram for printing.
Pin 17, line 5: +200V
Pin 15, line 3: +260V
Pin 21, line 1: +280V
Pin 20, line 2: +280V
Pin12: Audio in
R1: volume
R2: treble
R3: bass
L1, Л1: 6Н2П, ECC83, 12AX7 (but with heater modification)
L2, Л2: 6П14П, EL84, 6BQ5, 7189A
Power supply for this tube amp.
Big Circuit diagram for printing.
January 22nd, 2006 at 7:42 pm
[…] In older post I wrote about unified soviet tube audio amplifier. This as from “high class” device. Today, I found the schematics of “highest class”, the HiFi audio device. The output is 6W of pure tube power with lowest distortion. With some our days modifications it is possible to build quite cool power amp with quite popular tubes. […]
January 22nd, 2006 at 7:50 pm
[…] In older post I wrote about unified soviet tube audio amplifier. This is from “high class” device. Today, I found the schematics of “highest class”, the HiFi audio device: AM/FM radio, record player. The output is 6W of pure tube power with lowest distortion. With some our days modifications it is possible to build quite cool power amp with quite popular tubes. […]