First off, I've posted some stuff up here and everyone has been very helpful and informative, so thank you. I've been slowly building and expanding my PA for my band, it's nothing fancy but it works great for us. I'm not very tech-saavy, and I like something simple and easy to use because, well, honestly I'm not too bright with live sound. We play mostly small clubs with no FOH system, so it's up to us. What I am using now; Carvin RX1200 powered mixer, 1600W total including mains and monitors Livewire power conditioner (2) Carvin LS1503 3-way mains Anywhere from 2-4 Seismic Audio "Crap" 15" monitors Since we recently started mic'ing the drums and our guitarist has been running into the PA, I wanted to beef up the low end support so I ordered a Carvin 18" powered subwoofer. The RX1200 has an XLR output which can be dedicated for a powered sub, using the internal crossover switch on the mixer. Cool, easy to set up and move around, easy to set up. At our last couple shows, I have not run my bass head through the PA because I felt the mains were being pushed just with the drums, vocals, and guitar. Hence the subwoofer. Anyway, my question is this; up until now I've only been using my (2)15" cabs for sound, basically my stage amps are the bass with no PA support. It works well and I get plenty of boom, but I would love to be able to bring one cab or use my 210 combo as a monitor and run through the PA (it's also a Carvin and it has the ability to do a direct out). But I've been reading a lot and there seems to be a lot of discussion about how subwoofers don't work well as bass amps. I talked to the guys at Carvin and they told me that the internal crossover in the RX1200 isn't 100%, some of the low end would still go to the mains, the switch will just ensure that the only thing going to the subwoofer will be lows. They suggested using an external crossover but it wasn't in the budget....yet. And all of the diagrams that came with the RX1200 show exactly what I am doing with my setup, like I've totally duplicated it in every way. Any suggestions? Please be gentle, I'm learning as I go and again I don't know a lot about live sound, so the more you can "dumb it down" and put it in layman's terms, the more likely I am to understand it. Thanks in advance!