Well I think I have decided on a reciecer, but before I make teh plunge I wanted your guys advice. I am getting the pioneer VSX-811s however I was wondering how much trouble will it have driving 4ohm speakers. i am still a bit new at this whole HT thing and don't want to get burned. The speakers are klipsch promedia's v.2-400(computer speakers) I am setting up six satelites + sub. What problems could I encounter with a low impedence speaker setup like this on?