"why on earth would you try to use those as opposed to spending $100 on a mic and downloading REW"
Because I own the 3808 and I only do my own as in a limited number of speakers. Not going to spend 100 dollars tweaking one center channel.
Speaker placement does not drive my home theater/front room furniture placement. I understand there are optimum places in which to put speakers. Family lives in the room too. Which is why Audyssey is of value. Helps real world settings maximize the sound experience.
"Do you mean you want to modify the circuitry of the crossover built into your center speaker for an increaded output at high frequencies?"
Yes. Still thinking about dropping one 6 ohm resister out of the tweeter's xover network and re-running Audyssey.
Good news is Audyssey was able to address the room, speakers and current crossover and adjust successfully.
Thing sounds amazing.
E.B. White said, "I arise in the morning torn between a desire to improve the world and a desire to enjoy the world. This makes it hard to plan the day."