Hmmm... interesting,

After I posted I got to experimenting a bit just to see if the same thing would happen if I did it using a different power amp. I use a Carver AV - 405 to power my center and rears, which aren't bi-wired and that amp has always run even warmer than the others.

Anyway; I fed a regular stereo source to it's normally for mains inputs and bi-wired my main front speakers to it. I played a couple of CDs then came back to see if it was warm and nope, it too was operating much cooler than it ever has. Then I swapped out the main speakers from my zone 2 and still the same cooler results.

That's 2 different sets of speakers and 3 power amps, could they all be bad and produce this same cooler operating effect? --- Mike