SublimeAcoustic 3-way crossover

SublimeAcoustic 3-way crossover

What a great, very nicely made 24 or 12db per octave 3 way xover for the money. $499!!!!!!!!!!!!!!
https://sublimeacoustic.com/products/k231-stereo-3-way-active-crossover

I would have bought one but for, such a pity they use stacks of different cards for various xover points.
I would have much preferred to see banks of internal mini dip switches for this, (like Nelson Pass did with his B4) "just" in case they are no longer around one day and you want to change xover points with different speakers or whatever.

Cheers George

I've been using a crossover of my own design four subwoofers for a very long time now.   That LR, 4th order filter is the way to go, as far as filters go.  I haven't heard this particular Xover unit but it appears to be designed very well and it is well thought out.  Price is very fair, too!
Biamping adds a new dimension to sound quality and once I went down that path years ago, I never came back.   It is expensive but the improvement in sound quality is well worth it.  Gosh, even average amplifiers sound so much better when biamped. 
When biamping, active crossovers is the only real way to do it unless you want to fake an inductor by using a capacitor.  However, single pole, passive filters for biamping do work well, if a single pole filter is your goal.  But don't expect the performance you get with a 4th order LR filter and one really can't do that passively while driving a high impedance.