[Half-Inch Stud]

Here's the latest amplifier output of my turntable. Upon 1st power-up had Jangs Gang THIRDS going through these direct-filament triodes and tweaked the grid impedance to filament ground until it was pushin and puling about 70W/channel.

150 uF hidden below to smooth out the 640 Volts DC.

Still await a couple ceramic plate caps and the correct RCA input jacks. Otherwise done.

[rohrt]

Originally Posted by Half-Inch Stud

Here's the latest amplifier output of my turntable. Upon 1st power-up had Jangs Gang THIRDS going through these direct-filament triodes and tweaked the grid impedance to filament ground until it was pushin and puling about 70W/channel.

150 uF hidden below to smooth out the 640 Volts DC.

Still await a couple ceramic plate caps and the correct RCA input jacks. Otherwise done.

That is sweet!

Was there a schematic you followed to make that?

[Half-Inch Stud]

Originally Posted by rohrt

That is sweet!

Was there a schematic you followed to make that?

The schematic has been in my head for about 35 years. I left the preamps out; good move as these are high gain Triodes; reaching 70 Watts for 0.5 to 1 Watt input drive.

[bird72]

Originally Posted by Half-Inch Stud

Here's the latest amplifier output of my turntable. Upon 1st power-up had Jangs Gang THIRDS going through these direct-filament triodes and tweaked the grid impedance to filament ground until it was pushin and puling about 70W/channel.

150 uF hidden below to smooth out the 640 Volts DC.

Still await a couple ceramic plate caps and the correct RCA input jacks. Otherwise done.

yowza!