MetalGarret
Inspired
I've been told that typically pros record two rhythm guitars on mono tracks that are panned 30 to 60 left and right. But if I'm using a stereo cab, shouldn't I be recording stereo tracks?
Personally for the heavy, wide sort of metal guitar sound, I usually just do 2 tracks and pan 100% each side. It's not set in stone but its general approach.
Some folks have great success with 4 tracks. Personally, I think unless you know exactly what your trying to get from quad tracking, and the part/song calls for it, it is kinda hit and miss. You do have to have very accurate performances with quad tracking or it lose definition.
A Stereo setup is nice for recording solos. It's almost impossible to double-track a guitar solo (unless you can reproduce every bending or slide at robotic accuracy), so recording stereo on a double-amp, double-cab setting is a good idea here to avoid having to use spatial stereo wideners.