Williamson circuit. The input terminal connects to the top end of a 500 k ohm audio taper pot, the bottom end is grounded. The wiper connects to one end of a 0.033 micro farad capacitor. The other end connects to the grid of V1 eh, half of a 6SN7. The grid goes to ground through a 470 k ohm resistor. The cathode of V1 eh goes through a 1 k ohm res to ground. The plate goes through a 47 k ohm one half watt res to B plus 3. The plate of V1 eh also connects directly to the grid of V1b, the other half of the 6SN7. The cathode of V1b goes through a 22 k ohm 1 watt res to ground. The plate of V1b goes through another 22 k ohm 1 watt res to B plus 2. The plate of V1b goes through a 0.22 mike cap to the grid of V2 eh, another 6SN7. The cathode of V1b goes through another 0.22 mike cap to the grid of V2b. The grids of V2 eh and V2b each go through their own 470 k ohm resistors to ground. The cathodes of V2 eh and v2b are tied together and go through a 1.2 k ohm res to ground. The plates of V2 eh and V2b each go through their own 47 k ohm resistors to B plus 1, 400 volts. Each plate of V2 eh and V2b goes through its own 0.22 mike cap then a 100 k ohm res to a point labeled see minus. The junction of each cap and res goes to one grid of a power output tube. B plus 1 goes through a 3.9 k ohm res to B plus 2. B plus 2 goes through a 47 k ohm res to B plus 3. B plus 1 and B plus 2 each go to ground through their own 100 mike 450 volt cap. B plus 3 goes to ground through a 47 mike 450 volt cap. End verbal description.
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