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Looking for fans that doesn't produce high pitched noises

post #1 of 6
Thread Starter 
Title says it all. I'm looking for fans to use with my PWM fan controller, the FC3. All of the fans I have screech when I turn them down with the controller. I'm sure this is due to the nature of the PWM and how it controls the voltages to the fan. Now I'm just looking for fans that'll work with it without producing a high pitched screech while providing adequate cooling for my radiator.

Thanks.

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Buena Vista
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post #2 of 6
It's hit and miss with the FC3, I know I owned one for a day and sent it back. There was a SE (second revision) that claimed it fixed the fan whine, but who really knows, as it was still based on the original PWM design.

You might consider selling it, keep your fans and get a rheostat controller instead. Recommending any fans is more or less pointless.... could be the same or worse than what your have now.
post #3 of 6
if it whines from the fan when connected to the controller, try putting a 15-20v+ (500-2000mf+) capacitor inline with the fan, should level out the voltage enough to quiet it down

something like this should do nicely
2200uF 25V Radial Mini Electrolytic Capacitor
http://www.parts-express.com/pe/show...umber=020-1122
post #4 of 6
smaller fans typically are higher pitch, get as large of a fan as possible, try a 120mm x 38mm fan for better flow
    
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post #5 of 6
Back when I was using cheap fan controllers I discovered that only my Gentle Typhoons did OK. GT's can produce wolf tones, but you can get away from those by moving the rpm's up or down a tad.
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post #6 of 6

Where is this screech coming from? You said the fan, but it sounds like it might be the circuitry in the controller?

I have

with a fan controller and they work wonderfully even at low voltages.
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