Okay, so I picked up a Ampeg PR-410HLF and a GK 1001 RB II. I played at home and at jam --metal music. I REALLY REALLY dig the sound of the rig when I'm playing on my own, but with two guitars in a matress walled room the sound isn't cutting through. When I turn up, just the rumbles coma through and it eventually starts to fart. The bass is too loud, but the sound doesn't cut through. Any advice on turning up the sound without the volume and rumble. Would new pick-ups help...is it because it is matress walls. I have enough power...please help.