I’ve been using the DCX 2496 for a long time. They are very reliable Two of mine are over 15 years old.
Mine are used for BASS management only. The mids and highs are a very well designed passive XO. I used teflons in my builds at the time to match some other speakers I was also using..
The 2496 is just not good enough for mids and highs.. There is a company that will upgrade the whole mess for about 1-1200.00 At least they use to for the VMPS speakers and a few others..
they are daisy chainable, laptop access for the whole chain, full blown DSP, threshold limiters, and OTF correctiom.. The also have summation and a MIC tap for correction..
For 300hz and down.. you can’t find a more affordable or flexible product.. Add amps and speakers.. BIG BOOM BOOM.. 6 channels, 6 serious subs that are direct coupled to the amps... No direct coupling.. NO DAMPENING... Lots of folks don’t know that. If you put a passive XO after the power amp, no dampening..
I think First Watt might have an active crossover, other than for OB with a step option..
A GREAT Active XO can be spendy.. 2-5K sure nice though..
Actually the best way to divide the work, pre amp not post power amp..