You're welcome!
Just as a point of reference; with my speakers a 1 volt (rms) signal gives me ~85dB at the listening position. That's nice and loud as an average level. That would put the peaks in the 100-105 region.

OK, anyone actually going to measure? I'd love to see what you guys get. Those with bigger spaces will be using more power. My room is small to medium at about 3000 cubic feet. (84 cubic meters)