It's dirt cheap and I could coat the whole walls and doors with it.
I also have come to realize that Gentle Typhoon 120mm X 3 X 1900RPM with Scythe 3.5" fan controllers might suffice. What do you think?
I would also put 2 of those in push pull on the CPU Megahalem HS.
Personally I would be wary of using the GT fans on the cabinet. They do have bearings and they do have some kind of weird resonance that people report. It is reportedly a non-obtrusive resonance but it is there. Also people report that the resonance can become significant at particular speeds, unique to the particular fan. You are apparently safe running them at 12 volts.
If you are using the Prolimatec, why not use Nexus fans. If you were to upgrade to the Thermalright Venemous X, which probably generates more backpressure than the Prolimatech, then it might make sense to upgrade to the GTs which appear to be designed to handle high back pressure and to it exceedingly quietly.
But putting GT fans on a large resonance prone board, even with the neoprene, seems like needlessly looking for trouble.
The 1200rpm slipstreams are very flexible (in terms of quiet rpm range). More so than any other fan including the Nexus.
Those are what I would try first on the cabinet. And I think you only need two of them at 5v. If you need more air they can deliver all you need by increasing the voltage. Once you determine how much you need you can take them back down to 5v and add more.
You can cut all the four holes at once though. Just block two of them at first.
I wouldn't rush to get the neoprene. This might all work out nicely without it. I would use those 120mm fan gaskets that most places sell. They are cheap and easy and effective. I would use them even with the Neoprene.
Also instead of a fancy fan controller, get this.
http://www.performance-pcs.com/catalog/ ... s_id=25981
It will permit you to test fan by fan, speed by speed, in a reproducible manner.
I think you should also get the cabinet fans their own source of power. A low cost Pico-PSU might work.... though come to think of it. maybe you want to make sure that the motherboard and the cooling system are running on the PSU. You wouldn't want the fans to fail but the CPU to continue working. Maybe the PSU needs to be mounted to the cabinet and the mother board plugged into it?
The SPRC Seasonic would be good because even the 24pin main connector is modular and detachable. I wonder if you can connect two of them to the same PSU unit and run two computers of the same power supply?
Doesn't Ikea have any more suitable cabinets for this type of thing?