Aaron,
Understood. However, some sort of external I/O box like the apparently discontinued iAudiozInterface, should be able to support a calibrated mic.
I was going to ping you about this knowing about your crossover issue.
BTW, my tractrix mid-horns are ordered, as are the Klappenberger crossovers. Talked it through with a couple of others who did more or less the same thing as I want to do, and said that it is a great approach and the end results are outstanding.
-- Jim
Jim Rebman -- recovering audiophile
Equitech balanced power; uRendu, USB processor -> Musette DAC -> 5670 tube buffer -> Finale Audio F138 FFX -> Cain and Cain Abbys near-field).
s.e.x. 2.1 under construction. Want list: Stereomour II
All ICs homemade (speaker and power next)