How hot is "hot" in these cases? For example, in wingnut\'s entertainment center , I would not expect there to be a need for cooling fans in light of the very good volume of free area around the amp. The heat sinks in the amp are going to give off heat, so the air above the amp is going to be warm, but if we are talking about the air above the amp being somewhere in the 90's or even 100F I would not see a need for any supplemental cooling. Obviously, cooling fans won't hurt anything, but I also wouldn't be concerned about some noticeable warmth above the amp.