[eberrong]

I like the Waves RenEQ the best for guitars. I can't really recommend any specific settings because it will depend on your preamps, mic placement, etc, etc.... I can recommend that you use a high pass filter on the RenEQ set to 100-150Hz (experiment with frequency and slope). This will leave space for the bass gtr and other instruments.

Another thing I thought of that may help, do one of these 2 things...

- Put the amp in another room separate from the monitors. This way you can get a very clear picture of what tone is being recorded. And you can have a helper move the mic around while you listen to the monitors and get it perfect before recording anything.

- If you don't have a separate room to use. Get a pair of Extreme Isolation Headphones. They are only like $80 and I always use them when setting up a mic in front of an amp. They take out a lot of the room sound.