Hi, We had an entertainment center built when we finished our basement last year. It has a built-in equipment rack with a smoked glass door on the front. Because it is enclosed, there is quite a bit of heat buildup when everything is on. To solve the heat problem, I bought a 2” A/C cooling fan from Radio Shack. I drilled a 1½ inch hole through the back of the cabinet near the top (the cabinet backs up to the mechanical room, so I have access to it from behind). I mounted the fan on the back of the equipment cabinet (on the mechanical room side) so that it draws the hot air out. The fan is plugged into a switched outlet on the receiver so it only comes on when needed. The problem is, the fan makes just enough noise that it is audible (although just barely) during quiet parts of a movie. I put rubber washers between the fan and the sheetrock so vibration isn’t the problem. The noise is generated from the air movement caused by the fan blades. I’m trying to figure out a way to eliminate this noise. The only idea that comes to mind is to try to find a flexible hose 1½ to 2 inches in diameter, relocate the fan a couple of feet from the hole, and then feed the air through the hose. So far I haven’t been able to figure out how to attach the hose to the sheetrock or the fan itself. Does anyone have any ideas on this, or are there kits out there for this purpose that I just haven’t found? Thanks for the help!