I'll work on getting a test mic. For now, my ears say the polarities are correct.
My ongoing goal with my hifi system is to get as close as possible to having live music in my home, and the 4pi's have the magic I was looking for. In fact this sound is better than a lot of venues I've been to.
One question, any ideas on how to decouple the speakers from the wood floor? The spot where I want to place them is not covered by the rug, but I have noticed the bass is much cleaner when they are standing on the rug.