Hello, I try to understand the gain stages of the 4 channel mixer of the field kit.
Do I get it right, that U1 hast fixed gain of 1 (non-inverting buffer) and U2 has a fixed gain of 10 and U3 gain of 20?
The 100k RV-Gain pot only works as a voltage divider for the buffered input signal?
The input gain control with the pot does not work for one of my audio sources. Pot is to sensitive, I can only adjust from to quiet to already clipping.
Can I get a "finer" gain control and less gain when I reduce the 1M resistor on U2 to 500k?
Thanks!
Schematics Link
Do I get it right, that U1 hast fixed gain of 1 (non-inverting buffer) and U2 has a fixed gain of 10 and U3 gain of 20?
The 100k RV-Gain pot only works as a voltage divider for the buffered input signal?
The input gain control with the pot does not work for one of my audio sources. Pot is to sensitive, I can only adjust from to quiet to already clipping.
Can I get a "finer" gain control and less gain when I reduce the 1M resistor on U2 to 500k?
Thanks!
Schematics Link