Gobos are a good idea, but in most home recording situations, there will be SOME room bleeding into miked situations.
Room bleed, btw ... isn't necessarily a bad thing. It's the
nature of the room, the sound of it, where the distinction is made.
I like my 603's, and even though I was kindly sent instructions for the Mod (which I still have), I was too lazy to do it -- preferring, I guess, to twist the eq knob instead.
I think Harvey really had it when he said, "Placement is king" (or to that effect) -- as the 603 is going to sound like, um, the 603 --- and a really good sound CAN be had out of it. I like the AT4050 too ... it's a bit warmer. I've also gotten good results out of
my NT2-a.
My normal technique is to use one -- miked similar to Scrubs suggested earlier (about 18" out and pointed off axis from the top of the guitar back towards where the neck and body of the guitar meet). I'll use stereo only if the guitar is the only instrument in the mix, and I want it LARGE.
Once the mic is set, instead of fiddling w/ the mic, fiddle with the performer. Have them turn a little this way and that -- and get a generally good balance of the low end.
THEN have the performer then try to hold steady in that area.
For one can set a mic up perfectly, and if the performer changes THEIR position, the mic's original position becomes irrelevant.
Part of the decision process is how much room one desires in the final result. Achieving the right balance during tracking for the individual production is part of the trick of it.
Best,
Kev-