My Manual says leave at least 8" of free space on top and sides and 4'' at the rear to allow warm air to escape. Bet those individuals that had a fire or sparks did not have that space. There are probably millions that own the 805 and haven't had issues. If I had the extra cash I'd have one. No I don't work for Onkyo.

Anyways just thought I would share an FYI for people that have Onkyo's. While watching BD movie the other night I decided I needed to tweak the center channel up a notch and without thinking I went into the the Onkyo speaker setup and did not stop the movie, as soon as I clicked speaker calibration a big BOOM happened through all of my speakers and the Onkyo shut down. Talk about loud. Everything seems to be OK but you may want to shut off any inputs before going into the Onkyo setup. I have no idea what I was thinking by not stopping or pausing the movie but I am sure I will remember next time.