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H50 Push / Pull Noise?

post #1 of 19
Thread Starter 
I have just purchased 2 x Scythe Gentle Typhoon AP-15's to use with my H50 in push pull configuration (exhaust) The temperatures are great and the fans are sooo quiet but i have an annoying noise kind of like a whering noise or a gentle hum you get from a fridge / freezer. Is this common? Its in a CM Storm Scout case.

If you put your hand over the grill, blocking the air, it stops so its definatly coming from the fans. If i could get this sorted my PC will be perfect. I've tried adding a shroud to the push fan and it made no difference. Tried setting fans as intakes and the noise was a lot worse. Fans on their own are dead silent. Noise only occurs when in push pull on H50.

Any tips / tricks to get rid of this noise?
Edited by Darylrese - 5/14/11 at 5:07pm
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post #2 of 19
Might be the case grill causing the problem if shrouds don't change it. Also do they do it when they are not hooked up to anything just running outside case by themselves? Could try cutting out grill or even adding shroud between case grill and case fan.
    
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post #3 of 19
Are you sure it's not the air going by the holes in the case? Those can create a lot of noise.
post #4 of 19
Thread Starter 
It could be? I havent cut the grill out.

The fans on their own outside the case weren't making any noise atall. They are the quietest fans i have ever heard. Something is causing it to whistle and its the sort of noise that goes right through your head
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post #5 of 19
Then it's the holes that are punched in the case. Get a dremel and cut em out.
It's one of the reasons why I have one of my fans on 7V instead of 12V. Makes too much noise.
post #6 of 19
Thread Starter 
quite strange though as with 1 fan (the stock H50 fan) it didnt make the noise. Its only when in push / pull. Did the same when i tried the H50 stock fan with an LED one. Soon as i removed it, it was ok again

These fans are 1850RPM though and push much more air than the stock H50 fan
Edited by Darylrese - 5/14/11 at 5:25pm
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post #7 of 19
When you remove the one fan and put it on the rad. And then move it back a little does it stop making the sound then? As like offsetting it a little make it stop?
post #8 of 19
Thread Starter 
unscrewing the push fan on the radiator almost stops the noise but when its screwed back on it starts again
Edited by Darylrese - 5/14/11 at 5:42pm
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post #9 of 19
Put some spacers between the fan and rad. Or use the rubber fan gaskets.
post #10 of 19
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I might pop up to the local hardware store tomorrow and see if i can buy some rubber washers to space it out a little and see if that makes any difference i guess
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