I'm with Undertow and Tim196. Active is definitely better from a technical perspective but less flexible than passive for tailoring the sound to individual taste (particularly if you like added harmonics from tube power amps to warm or sweeten the sound).
Crossover ? Passive Vs. Active
How many use active crossovers. Would it not be better to crossover before amplifing the signal, or am I missing something? Why waste all that energy just to filter it out. Plus why can't they separate the highs, mids, and lows during the recording and then the processor/preamp sends it to the correct driver and do away with a crossover?