You need to think along these project lines. http://www.partsexpress.com/projectshowcase/indexn.cfm? project=Blue
I would go active, using plate amps with built in x/overs instead of the passive design, and fixed x/overs that he used. Active speakers are more flexible and don't require monster cables to get the power from the amp to the cabinet. The amps for each driver are built into the cabinet! Understand. You still need (coaxial) signal cables, and a place to plug in each cabinet, but that's usually no sweat.
