Hi there nscanuck.... i had a similar problem when I started out. My receiver was not getting enough ventilation. This caused excessive heat and finally shutdown after prolonged listening.
With alot of help from this board and the support at Axiom I found that every time my denon would cut out it sent a DC spike to my speakers (which is what eventually cooked my tweeters).
So my problem was I needed more cooling. My dvd player and shelf had to be moved another 8 inches off of the top of my receiver.
I placed a fan on top to also help ( which I've since removed, because the SPACE all the the Denon really needed)
Sometimes i like to play my music really loud... and now I can.
Now I'm not sure if that will help but maybe the rotel just needs a few more inches of space?
hope this helps
