The room is about 20' x 20' or so... with a 6' opening into a very large kitchen that also has two other very large opening... then a 5' opening into the foyer... a standard opening into a small study... and another opening into another small foyer that goes to our bedroom. Plus the ceilings are 10' high. It has to fill a huge area. Estimating probably over 15,000ft^3.
No treatments other than a large sofa, loveseat and recliner.
The bits in the cabinet have not moved, rattled or said a word about anything. The only rattles are if you are standing in the kitchen, the tray in the microwave along with a few dishes here and there, will rattle during certain scenes. Nothing that can be heard if you are in the great room.