Thanks to all for your quick responses. To address some of the replies, my thought was to run the 5 channel stereo so that the front and rear pairs would push out the same signal and levels. The receiver I have in mind is a Yamaha RX-V2200 that a friend might let go on the cheap. Not sure how it does its A+B speaker outs (parallel or not). I also got a response from one of the Axiom guys (Brent) and he suggested a Russound speaker switcher (a little research uncovers that the $89 SS-4 looks like a good fit) along with my receiver. With that approach, I guess I could get a simple stereo receiver as long as it is 4ohm capable as Russound requires it if I want to drive three pairs of speakers at once. Thoughts on this approach and does anyone know of any good, cheap, 4ohm stereo receivers out there?