Re: amp settings
I don't think any pro nusician who GIGs regularly uses the same settings in every room. Years ago I used to play in this one room that had a metal ceiling. If I used the same sttings in that place as I did in the sudio the treble would have been so high I would have broke all the windows!
Your EQ needs to be adjusted to the enviornment in which you will be playing. Then once the room fills up with people you will have to adjust it again!:argh:
It would be so easy if you could just set it and leave it, unfortunately it doesn't work that way.
I also find that depending on where I am standing in comparison to the amp.... I may adjust it some more!
+1.
Carpet, hardwood, and tile all affect the sound you're hearing from an amp in a room. What sounds nice and crunchy in the room with the carpeted floor often sounds significantly brighter anywhere else in my experience, almost so much that I need to back the treble off a bit. But...
Personally, I never touch my settings once I set them where I like them. Like Bludave said, the sound changes a lot depending on where you're standing, so what I do if I make some setting changes is move around a bit as I'm playing something so I get the best idea of what it sounds like. Even if I go to a gig, I don't touch my knobs because most of the time the amp gets mic'd up. Yes the mic'd sound will be different from what you hear in a room but it always sounds great coming through the monitors, at least to me, and that's what matters.
Oh right, settings

. On my XXX, the EQ knobs on the gain channels are active so for all intensive purposes I'll double the values.
Clean: Bass 6 / Mids 5 / Treble 5
Crunch: Bass 6 / Mids 3.5 / Treble 7 / Gain 4.5 / Volume 10
I don't pay attention to the Ultra channel that much because I barely use it. Settings are pretty much the same as the crunch but with less gain and volume.