I just purchased an Onkyo tx-sr805 receiver. I have it on a shelf in my TV stand. The stand is open on all sides and there is about 5 or 6 inches from the top of the receiver to the shelf above for the amp to breathe. The Onkyo 805 is replacing an Onkyo 502 so I know how the Onkyo's run warmer than other receivers. I never had any problems having the receiver setup in the same TV stand for about 4 years. The Onkyo 805 seems to run a little bit warmer, probably because it has a much beefier amp. I was considering adding an external fan(s) with a built in thermostat. Something like one of these.

http://coolerguys.com/840556082491.html (also has link to 2 or 3 fan version on this page)

or http://cgi.ebay.com/AV-RECEIVER-AMP-120m...1QQcmdZViewItem

How many fans would I need to do the job? Are these reasonably priced items? Has anyone else used these types of items?

Thanks in advance for any replies.

- Nick