I second the spirit of Eric's post. In fact, I am waiting for glue to set as I type, on a set of passive loudspeakers in the shop.
It has been several years since I experienced the active loudspeaker idea. I was working with an engineer in Tucson who is brilliant with the technology of an active design, yet, in my application or use of such speakers, I still preferred the passive design that originally complimented these speakers (also designed by him).
The active crossover chosen was made by a company that was popular but not impressive in build quality IMO. Bryston amps were used for power to all drivers. Balanced interconnects were used throughout, and I forget which AudioQuest speaker cable we chose.
In a word, I found the result too dry for my taste. Again, the passive crossover was my preference, even though as stated before, they are rough in comparison of what can be accomplished with an active line level device.