Back off
Mic placement is pretty crucial. You can get a million different EQ responses depending on where you throw the mic in front of the cab. I personally have the best luck or at least I think so when I back the mic off a little bit. I know a lot of engineers throw it right on the grille to get the bass boost, the proximity effect and all that garbage, but I find that if I back it up about six inches, I get a more balanced EQ curve.
link
never tried as far back as 6 inches......anyone else gone that far?