drunkonjack, no, the subs weren't to blame (but I'm not sure how the old picture window up front ever withstood them! Heavy bass scenes would always have a "(not-so-)nice" glass rumble as well. I probably would have shoved a nice piece of dynamat right in the middle if my wife would have let me.
It was the dehumidifier in the basement. Lucky for my wife, the baby we didn't yet know we were expecting, and I, we were at a golf tournament. No so lucky for the poor cats that were home.
Thanks for the kind words. With the baby and two new cats, the five of us are in our new home, and I'm tickled to be setting up the system I wanted to do a long time ago.
Thanks again,
Tom