Talking about the 47 ohm resistor after the cathode bypass resistor and cap of the second gain stage of the preamp tube, right where the NF goes back from the output transformer.
I had this resistor on my silver face style champ removed by accident, i just didn t noticed it in the schematic
I have put it back and find out that now, the cathode bypass capacitor 3way switch selector the i installed as a mod is completely useless.
From 20uf to 0,47uf it makes no difference at all. Also the negative feedback seem to have a lot less impact, why is that?
It is all wired correctly.