If you're using strictly digital sources, and you're open to something completely different....
You might think about a DEQX (or similar) digital domain x-over/preamp. These are 3 way units, so the mid and tweeter will still need to be jumpered. However, in addition to the overall theoretical advantages of crossing in the digital domain, these units also provide digital room correction (which I find compelling). This might be particularly useful to your application, because (as Minor1 noted) any missing notch filters or other FR correction built-into the passive x-overs in your speakers will be less problematic with DRC.
I understand that this is a different approach and not for everybody. Just thought it was worth bringing to your attention.
Marty
You might think about a DEQX (or similar) digital domain x-over/preamp. These are 3 way units, so the mid and tweeter will still need to be jumpered. However, in addition to the overall theoretical advantages of crossing in the digital domain, these units also provide digital room correction (which I find compelling). This might be particularly useful to your application, because (as Minor1 noted) any missing notch filters or other FR correction built-into the passive x-overs in your speakers will be less problematic with DRC.
I understand that this is a different approach and not for everybody. Just thought it was worth bringing to your attention.
Marty