I wish Earl was still around. I'd love to pick his brain about what makes those designs so good. Not to mention, I'm wondering about those old inductors they used...I am definitely going to test some variations around using original coils, new caps/ new inductors, new caps/ etc. I put together the schematic for my M14 crossovers this evening for giggles.
model14xoschematic

I should have my L/C built by next week sometime, then I can confirm the inductance values of all the coils.