Aaah. Another one of my projects. I laid a shelf for the computer to sit on, built an oak frame, laid plexiglass in it, weather sealed it, and put some latches on. The backside is a pressboard door with weatherstripping, and two fans built in. One is a large draw fan that has a wetdry hose attached to it that goes into the A/C, and pulls cool air in. Then there's a pucsh fan to get the hot air out. I also made a fan on the top of the rack to pull air straight out, but it's been noisy, so I disconnected it. The MacPro runs way cooler than my G4 anyway, so I don't need it to run. The hole is good enough.
The lack of fan noise is a godsend. Now if only my EMT fans were less noisy. Forget recording in the room. It's listening I'm concerned about.
William, those are JBL S7Rs. They belonged to my father. He got them in like 1970 or something, to use in our living room. A pair of these drive the bullet and midrange driver:
But honestly, I never use them. The Genelecs sound so good in that space.