James, what I meant was that the speakers sounded a lot better in my 2-channel setup than my home theather. I switch between my ASL1001 (KT88 push/pull) and my DIY Gainclone and the PI's sound great there. In my HT, so-so, but I blame it on the $150 Sony receiver that I'm using. In any event, the PI's are still a lot better than the Polks I've been using for HT.I have a suspicion that Sony rolls off the bass in the "natural" setting to give their "Bass Boost" function more impact. With this receiver, I have a choice of weak bass, or boomy bass to complement the screechy top-end. :-P One of the drawbacks of using revealing speakers with a crappy amp.
Wayne use to have a Premium 3PI, built around the Omega Pro 12" driver that would work very well with your Premimum 4's. For Center Channel, you don't need to go deep, so a smaller box could still work.
Gar.
Gar.