Originally Posted by NiNoDuKEz
Whats the difference between a standard fan controller and a Rheostat?
A rheostat switch is analog, which means that there is an infinite amount of fine adjustment in between min and max, where I am assuming "standard" refers to a digital controller, which will have predefined steps like low-med-hi, or 1 through 10. I like rheostats, because if you have one fan that is a little slower/faster, you can give it micro bumps to the dial until the speed variance doesnt make that annoying "wah-wah-wah-wah-wah-wah". If you have good fans that have minimal variance in speed to voltage, then it is a mute point, but even good fans installed with different restrictions have a different harmonic resonance.
Edit to add: check the amperage/wattage of the fan controller, and the fans you are planning to use. There is allot of crap on the market for fan controllers that are gimmicky, and very low powered.Edited by inedenimadam - 3/9/14 at 7:58pm