Mic placement for guitars with Joe Barresi

never heard of that trick before, fucking great idea!!

I'm usually using a combination of a piece of concrete sandwiched between 2 pieces of foam (only if I'm not using catsers...which is the case for some of my 4x12 in which the bottom speakers sound better, so I put them on the side with the good sounding speaker on top)

In a large room, I'd keep it grounded to the floor. In a small piss-ant room, definitely need to get it off the ground. Helps reduce that woofly boom you get in small rooms.