Active crossovers when done right piss all over passive crossovers, it's like comparing a sad IB design with a decent horn - no contest that's unless you like muted dynamics and coloured sound, surprisingly some do! (IMO-SNA). The poor olde amp looking into a complex load of capacitors and inductors has a very uneven response and tough time and that's without the typical driver inductance etc. Long live active crossovers particually when they are valve based with no snarling feedback to mess everything up.
V