@ronboco , I completely understand. I was in the exact same boat. But before you can determine what is used, you have to understand what good parts are for a crossover first. I have owned the Aviors and have owned several pairs of Wilsons. They all use decent but cheap parts. They are OK parts but far, far, far away from the best parts.
Once you hear a speaker with copper foil caps, Mills wire wound resistors and high quality inductors your jaw will drop.