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EK Club - Page 1288

post #12871 of 21096
So, I bought some F4-120ER fans PPCs about a month ago and just got around to putting them my build.

Is normal for the hub to generate a whining noise at mid-range RPMs?

At high RPMs I cannot hear them since it gets drowns out by fan noise.

The fans are installed on the top rad of my Caselabs SMA8 and I can still hear noise over the bottom rad when I am sitting next to my desk.
post #12872 of 21096
Quote:
Originally Posted by zerone View Post

So, I bought some F4-120ER fans PPCs about a month ago and just got around to putting them my build.

Is normal for the hub to generate a whining noise at mid-range RPMs?

At high RPMs I cannot hear them since it gets drowns out by fan noise.

The fans are installed on the top rad of my Caselabs SMA8 and I can still hear noise over the bottom rad when I am sitting next to my desk.

@Anateus and I had the same problem. At 50% pwm signal, the speed control circuitry made a terrible "coil whine" noise. If that's what you are getting too, @EK_tiborrr said we could RMA them.
post #12873 of 21096
Yes, this is correct. Sorry for the hiccup guys, some things are just out of control sometimes mad.gif
    
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post #12874 of 21096
Quote:
Originally Posted by kl6mk6 View Post

@Anateus and I had the same problem. At 50% pwm signal, the speed control circuitry made a terrible "coil whine" noise. If that's what you are getting too, @EK_tiborrr said we could RMA them.

Yea, it does sounds like coil whine. Kinda hard to explain, but sounds like somewhat like what crickets make at night biggrin.gif

I guess I will have to RMA it with EK directly since I bought them about a month ago.
post #12875 of 21096
Quote:
Originally Posted by EK_tiborrr View Post

Yes, this is correct. Sorry for the hiccup guys, some things are just out of control sometimes mad.gif

No worries here. I'm still overly impressed with your presence here on OCN and with your willingness to listen and help. Thanks for that! thumb.gif
post #12876 of 21096
Quote:
Originally Posted by EK_tiborrr View Post

Yes, this is correct. Sorry for the hiccup guys, some things are just out of control sometimes mad.gif

Ok, thanks. Just submitted a support ticket on EKWB.com
post #12877 of 21096
Ah so this is what I have too, I thought there was only an issue with the 140mm one.
Now I'll have to figure if all of them do it, huh.
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post #12878 of 21096
can I mount a predator 240 in the bottom of the case pulling cold air into the case? does the pump get starved when inverted? if there is no air in it then it should not matter right?
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post #12879 of 21096
Opened RMA ticket for my 5 Vardars. I am unsure now whether to get a refund or replacements... Will see.
post #12880 of 21096
Quote:
Originally Posted by BiGlikeAb0SS View Post

can I mount a predator 240 in the bottom of the case pulling cold air into the case? does the pump get starved when inverted? if there is no air in it then it should not matter right?

On page 7 of the User Guide titled "Unit Orientation Limitations" that specific orientation is shown as being "wrong", with the caution "The orientation of the unit is very important as wrong installation may lead to insufficient cooling performance and premature failure of the unit".
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