I've been digging the Audix i5 a lot on cabs. It seems to have more bite than the SM57
. For me though, I can't ever seem to get a great electric guitar sound out of just one mic. Maybe that's because I always wind up needing a different sound in the final mix than what I think I will need when I'm tracking. So my preferred method has been to put the i5 up on the grill and drop a Nady RSM-5 or an Oktava MK219
about 3-6 feet back depending on weather I want a meaty tone (Nady) or a more sparkly tone (Oktava). I'm sure an MD 421
and a Royer 121 or Neumann U67 would be better, but this is low end, right?
I place the i5 first (usually just off the dust cap, but wherever it sounds best) and then add hook up the second mic (RSM-5 or MK219) and move it back and forth in front of the cabinet to capture more room sound. As you move it, you'll hear the phasing effects of the two mics, so you just stop it where the phasing fattens up the sound without making it muddy. Unless both mics are the exact same distance from the source, you'll have phase issues, but if you are smart, you can use that to your advantage! Use the distance between the two mics like an EQ knob! A looping pedal and some isolation headphones make this easier if you are by yourself.