jafant - thanks for inviting me over from AVS
rosami - I echo your comment about what I've found in this thread, scanning back just a few pages. Great people, great info! As to your comment about your amp being "only" X watts...I have come to agree that quality can easily trump quantity. In my 2 channel set up, I drive KEF Reference 3's with a Pass Labs INT-60 which is "only" 60W into 8-ohms, the first 30 of which are Class A. Lemme tell you, the sound is extraordinary, and capable of volume far beyond levels I enjoy listening!
Tomthiel/folks in general - I see a lot of posts about changing the crossover in the 3.6's, but haven't found a post detailing how and why doing so is better..? Not arguing the point, just asking as a new guy. Please be gentle :)
In one theater I use a pair of 3.6's, the larger center...can't recall the model...MCS1? and 4 Powerplane 1.2s, all driven by Krell.
In another, I use 3 PowerPoint 1.2's for L/C/R, and 4 Powerplane 1.2s. I'll refrain, for the moment, of saying what I use to drive them, though the answer may surprise and anger people :D
Anyway, would be interested to hear (ha!) what the upgrades might yield.