jcm with sir34 to mod

[giordydiver]

hi guys in this day I posted some topics about my amp and finally I have solved all my problem about hum and hiss and I can thinking to sound. so I like sir 34 but I think is not at all for me but is a good point to start. in my opinion is too gained and bright and maybe a little thin. I cut off the bring cap and gain pot is more menageable, on hi imput start with light crunch and finish with powerfull distortion, low imput a spectacular clean sound, very clean sound. now I want a tone a bit dark and fat. I thing to put a resistor (33k or 68k) between gain pot and v1b and cut off the 150 from gain pot to ground. what do you think?
this is a draw with the mods circle
http://s29.postimg.org/cc3hdplt3/1447610771970.jpg

[herbvis]

cut off the 150k, that will just thin it out. remove the treble peaker before the gain pot. play with your first and 2nd stage cathode resistor and cap values. Maybe a 820/220uf for the first and then tweak the 10k stage until you find a winner.

[giordydiver]

Perfet, is i think cutting 150k have a fatter sound. About the resistor between gain pot and v1b? About treblepeak I know that this lower signal and cap il a filter, more value give more treble, if I restore 470k/500p?

[herbvis]

Perfet, is i think cutting 150k have a fatter sound. About the resistor between gain pot and v1b? About treblepeak I know that this lower signal and cap il a filter, more value give more treble, if I restore 470k/500p?

its mainly for tone shaping. get rid of it and see what happens