Breaking News! I installed 30 copper bowls, 15 were 1" and the other 15 were 1/2". They were all installed in room corners, upper and lower, in some cases more than one per corner as there are 3 surfaces per corner. Without commenting on the sonic results yet, in my portable headphone system, I'm reporting that the TV picture is quite a bit better. In fact I had to recalibrate the color saturation from 3 down to 2. Never had to do that before. Whaaaaaaat? 😀
Cheers, everybody!