Jason,
I haven't located the SPL meter yet, but even when I do, I'm not certain I'll understand what its telling me.
Roscoe,
Yeah, bass is improved--tighter and more controlled; impact is similar, but most importantly its less noticeable in the condo below me.
Clark,
I will try that tonight if I have some time. I've had everything more pushed towards the corners than behind the speakers as is. I'll have to move the speakers forward to fit couch cushions.