I'm pondering the idea of downsizing my current setup, which right now is a gk 700rb mii, and 2 avatar tb-153s. If I was to switch to 2 12s, what are my pros a cons? Has anyone made a switch to this type of rig? I love the beef that I bring with my 153s. The lows will dislodge your brain. Just most of the time it's a pain to bring both for an on stage gig(half the time the sound guy is telling me in overpowering his subs), but using just one doesn't fill a gig where there's no pa support. If I switch to 12s am I going to lose the volume and that rumble? More or less I'm trying to run my amp at 4 ohms consistently because we added a second guitar and 8 ohms ain't cutting it anymore. I guess I'm looking for portability as well. Thanks for any advice!