So changing R79 increases the level (volume) of the clean channel and increases the gain on both channels?evh0u812 wrote:Sure.
Green/Blue channel-
10k voltage divider to 42k
This raises the clean level and increase gain slightly.
250pf mica on the 100k plate of the second triode.
Smoothes out top end on the blue channel.
Red channel -
Removed the 2 1uf cathode bypass caps C16 and C30.
Lowers the gain and makes the gain pot more useable across the range.
Replace 47pf on the PI with 100pf.
Still looking at the power supply filtering, but thats it for now.
So with the gain pot in the middle position the clean channel is much louder ?And more distorted?Is the effect the same as turning the Gain Pot 20 % up volume and distortion- wise?
Are the components on the board crimped and additionally soldered?
What is the 100 k plate resistor in the schematic, R85???
Thanks!
MXR