Thanks for all the input; exactly what I needed. I'm now thinking about bi-amping (one amp for tweeters and another for woofers) as the 2.5s have damn good bass if given enough power. Think I'll start another thread for bi-amping advice. Thanks again, everyone!
Subwoofer Blending
I am considering buying a REL or Velodyne (or similar)subwoofer and want to "cut off" my Proac 2.5s at 50-60 HZ, blending in the subwoofer. I want to ease the burden on my SET and also get better bass response. I know most people recommend running speakers and subwoofer full range, I don't want to do this. Will I need an outboard electronic x-over or these products have built in x-overs for the purpose? Does my pre-amp need a special input for connection, would I just be able to use a line level input?