I had about an hour of ear time so far this afternoon. First impressions are : wow. It really does sound as if there is a center channel. There is so much detail of the music that is coming out that normally get's left behind.
There are a few unfinished spots that I have to look into but so far so good. The Cleansweep did cause me some grief for a bit as I did not turn the radio up 45 clicks (this is very loud, btw) before calibrating. Recalibration fixed that. I do have a double thump coming out of the speaker(s) at startup and when the car goes do sleep. It's hard to say if it's all of just some as it's not an easy thing to cause. I think it's all speakers though. I also cannot seem to lock one of the rear seat clips back into place. I'll have to look into that one.
Oh yeah, Posse on Broadway came on during my drive