Originally Posted by Little_Timmy
psyclum yes now looking back I would have chosen the Rheostat 6 long before this. It was recommended to me before I placed my order that I do this with two fp5s. I was actually considering ordering sunbeams rheostat now even with my pwm fans lol. Everyplace is out of stock on the 5.25 model atm. Actually with it I could probably control the speed of my pump with it also since its nominal draw is 24w and rheostat is 30w per channel. and one channel would be plenty for all the fans on my rad. To answer the distance question its next to the PC at the moment and the extension is about 5 feet but plan on moving it outdoors next winter for some sub zero cooling if I am ambitious enough.
be VERY careful with sub zero testing
it doesn't take long for freezing liquid to break a rad and pump when they aren't designed for it
if you intend to experiment with sub zero conditions, you may want to just go to home depot and buy a 30 feet coil of copper pipe and do it that way. would be cheaper to replace and you wouldn't need any fans
as far as the PWM wire... i'm guessing you might be able to try using CAT5E or CAT6 network cables.. the twisted pair (PWM signal and ground wire) may help carry the signal further w/o degradation? i don't know if it'll work. but it's worth a try IMO.