Cap parallel resistor to ground between stages?

[Doug]

How does r/c to ground affect the signal frequency between gain stages?
I'm looking specifically at a peavey classic 30, between stage 1 and 2 into the drive channel. After the gain control there's a 470p and 2.2M to ground before stage 2 grid. Is this peaking 470p or rolling off? Does the gain pot act as a resistor and form a r/c roll off?
I'm trying to smooth out this channel so it's a better match with the normal since they share the tone stack. A little brighter is ok, but it's a bit much. I upped c2 to .022 and C13 to 5uf, snipped c4. C7 in or out?
Thanks

[Enzo]

Why don't you drop over to blueguitar.org and check out all the Classic 30 mods there. People have already done a lot of this stuff.

If you snipped C4, how does a signal get into the dirt channel?

If you want to tame the dirt channel, one simple and effective way is to replace the 12AX7 with a lower gain tube like the 5751.

If smoothing it out means less high end screech, aside from Blue Guitar's discussion, C7 is a rolloff, lose it and you get more highs. C1 is bypassing highs around R5.

Go look at Steve's site and see what that does for you.

[Doug]

Sorry, I snipped c1

I meant c1 the 470p around the 470k after stage 2. I did see the blue guitar stuff, installed the tone stack mods. I liked what that did for the sound. I like the silver micas, but it's like a more shimmering, transparent sounding icepick in my ear.
What's the function of r13/c16 around the 10k post? I'm still picking up on shaping the sound outside the tone stack.
I am trying to get rid of the raspy top end. Is the bigger bypass cap at c13 the right way to go?

[Enzo]

Bypass caps are so simple to tack solder across the cathose resistor, it seems simple just to try it and see what you think.

All the little Rs and Cs in there are for tone shaping. Some of it blocks the low end to keep it from getting muddy,while some rolls it off so it doesn't sound so piercing.