I'm still not 100% happy with my amp in our rehearsal room, cause it's still a bit too boomy / muddy / fizzy in my ears. I use a JCM 800 2203 KK and an Engl E212V (2xV30s) which is a very nice combination, I still remember how awesome it was when I played it in the local musicstore, but I think the room just fucks it up completely. Because our drummer is some sort of a douchebag, he rather buys a 3000€ drumkit than spending a few bucks on acoustic treatment, so for now I have to accept the screaming and reflecting highs (btw it's his basement). But enough of that uninteresting stuff Because my cab hasn't got any casters (and i don't really wan't to screw something on it), it directly stands on the floor (carpet), so it may interact too much with the room and that may be the source of the boominess. True? And can I get rid of that unwanted boom and mud by decoupling my cab from the floor? If yes, any effective solution?