I used a Yamaha SP2060 crossover feeding a two way horn speaker via independent power amps, so to speak an active set up. You can play around with almost everything using this kind of digital crossovers. But again, you have a "digital" system at the end, even when playing vinyl - with all the advantages and disatvantages of digital.
So I sacrified benefits like time delay compensation etc which come along with the digital world ...and currently I'm back with a true analog system, using a passive xover.
Concerning the hifi world speakers, I think, they will go the route of active xover because at some point costs of active integrated amps using a dsp/xover, in a fixed design for a given speaker will become cheaper than a conventional passive set up. A clear benefit for the manufacturer is also that you can easily compensate for given acoustical mistakes, like an average car suspension set up can be "repaired" by using ESP technology. But then again, it is digital, regardless of the source.
