active crossover recommendation

The bryston wont work. None of the suggestions will work

Check out the DBX units. I realize they're a A/D then D/A, but with all those possible adjustments I wouldn't worry about the digital conversion. This will be your best solution. Don't fear the digital processing as it's more accurate than the analog versions, and a whole lot cheaper.

Hey OP!! Depends a lot on your needs.

Most passive crossovers include level matching, frequency and equalization.  If you need equalization a DSP based unit like miniDSP would be ideal.

While not listed on their home-page, the fellow at GR-Research can make a crossover for you I'm sure.

I call him "the fellow" because he never introduces himself.

gr-research.com/

The fellow is named Danny Richie, but I don't think he builds crossovers. He sells DIY speaker kits, which include the parts for making the passive crossover filters the loudspeaker uses.