Interesting that you record these kind of temperatures Kcarlile. By the way, how are you recording these temps. Are you resting the thermometer on the top of the unit? What kind of thermometer?
That is one thing that I immediately noticed when I tried out the 525 was the amazing amount of heat that it put out compared to my ONKYO at the same volume level. Actually even when the h/k was idle it put out so much heat that I thought I would have to install a sprinkler system in my house just in case.
Perhaps it just has really efficient heat sinks that get rid of a lot of heat, but it seemed REALLY excessive to me.
Let us know how things go and if you install an external fan let us know how much temperature drop that you get. It would be really interesting to know.
