"Crossovers may be implemented either as passive RLC networks,
as active filters with operational amplifier circuits or with DSP engines and software.
The only excuse for passive crossovers is their low cost.
Their behavior changes with the signal level dependent dynamics of the drivers.
They block the power amplifier from taking maximum control over the voice coil motion.
They are a waste of time, if accuracy of reproduction is the goal.
SL ( Siegfried Linkwitz ) - October 2009"http://www.linkwitzlab.com/crossovers.htm
ATI's 12 channel amplifier, 60w per, that is as good as any other
solid state amp, is ~$2000-2500 msrp.
Rotel's 8 channel amplifier, 40w per, is $800 msrp.
( Active x-overs require much less power than passive x-overs. )http://theaudiocritic.com/plog/index...eId=5&blogId=1