@audioman58 10-4 @jayctoy yup, on Ulfberhts the crossover upgrade "at the factory" is a $2k line item.
My x-over upgrade costed less since I have fewer drivers in my "half" Ulf's... my low ceiling drove the need for a shorter speaker.
I have the Impact monitors and really enjoyed the concentric mid-tweets around central single tweeter, so a custom order with Eric resulted in exactly what I wanted:
Best speakers I've ever heard in my home (B&W, A/D/S, Martin Logan, Maggies). So much non fatiguing resolution behind my Purifi class-D monoblocks, that I'm now doing a 3 way DAC+pre-amp shootout next week (Sim/moon 391, Wandla, T+A dac200) as I can finally hear a difference between my current DAs (Bryston SP from 15+ yrs ago, my Eversolo DMP, and a Gheselli) so I'm interested to see how things will sound with such a DA/pre combo.
I've worked with Eric pre/post impact monitor purchase and also this custom Ulf transaction. He's been solid and helpful.