In one of the groups I'm currently with, I'm using a Bmax pre, a Mackie M1400 PA and I'm running it thru a Acme Low B2 4ohm (series 1) and a X-Audio 2x10 4ohms(yeah, I know its cheap, but it really does hold its own). THe setup sounds good, but in my opinion, doesn't match the sound of the band. The sound of the band is rough, kinda late 60's sound. I used a Trace Elliot AH-300 and a Hartke 4.5XL, but thats a lot of weight and the sound was a bit too 'funk'. I'm thinking of using my Sunn Coliseum 300 heag, the X-Audio and a Legion Sound 2x10, because the Sunn doesn't really have enough power to push the Amce. The Sunn says "300 watts @2 ohm". The X-Audio is 4 ohms, The LS is 8 ohm. Anyone see any problems?