generally, the middle of the cone in most cases provides you with more treble and buzz than anything else. are you using a 4x12 cab? if you are, try micing the tope right speaker with a condenser mic, roughly between the center of the cone and the edge, off axis slightly with the cone so that the diaghragm of the mic points a touch towards the center but not so much as to make it brittle. the best way to pinpoint it is to wear headphones as you adjust the mic and listen to whats going on in the headphones while you play with the positioning until you get what you're looking for. the mic should be no more than about an inch or so from the grille of the cab. ive found this is where you get the best "beef" of most amps. it depends on what amp though, so you will have to adjust to taste. when youve got your sound roughly the way you like it, throw some blankets up over and around the cab to deaden the room ambience. us this as a guideline and you will get some great tones.
however, lol, keep in mind that if you dont have good bass and drum sounds to start with, the overall staging of your guitars will suffer. and btw, doubling is the key to any rock recording.
