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19dba not very quite!!!

post #1 of 8
Thread Starter 
I hope this is the right area

I just bought two of these:

http://www.pccasegear.com/index.php?main_page=product_info&cPath=9_510&products_id=8022

for top exhaust on my case, thinking they would be nice and quiet whilst moving plenty of air. But they seem to make one hell of a vibration and consequent noise:( The sound is from the fan not the case, because when I remove the fans from the case and rotate them, it is only when they are up side down they have this noise.

Just wondering if anyone else has came across this with Coolermaster 120mm fans?

Or do I return them to supplier?
post #2 of 8
Thread Starter 
:kookoo:Don't worry just found my NZXT fan controller has compatibility issues with that model fan:kookoo:
post #3 of 8
CoolerMaster likes to make up dba ratings for all their fans. For example, they claim their 2000RPM sickle flows are <20dba...definitely not happening.

A cheap solution is to undervolt them using an adapter smile.gif
    
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post #4 of 8
Thread Starter 
Quote:
Originally Posted by ginger_nuts;15145213 
:kookoo:Don't worry just found my NZXT fan controller has compatibility issues with that model fan:kookoo:

I totally appreciate all the in put, but NZXT Sentry 2 has known issues with some fans.

http://www.nzxt.com/forum/showthread.php?7796-Sentry-2-Fan-List-(Strange-Noise)
post #5 of 8
Quote:
Originally Posted by ginger_nuts;15145167 
it is only when they are up side down they have this noise.

There maybe that will help.
 
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post #6 of 8
yeah I Run my R4s at 5v because they're not compatible with my fan controller and they're noisy gunner.gif at 12v
I`m intending to replace them with aerocool sharks
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post #7 of 8
Thread Starter 
please, people i have found that the cause of the noise is created from my nzxt sentry 2 fan controller. It is even listed on the nzxt official website.

When i connect the fans directly up to my psu cable with no voltage increase or decrease they do run extremely quite, no undue noise.

So please can we just read the fact that it is my controller which has the issue's not the fan's, not coolermaster's advertising not the fact that around the world we all have different products available.
post #8 of 8
I've wiped out most of this thread due to some nasty arguing going on... if you want to bicker about the specs of CM's fans and alleged regional differences, do it somewhere else. I know I've personally provided input many times about this already and this is a dead horse that doesn't need any more beating, and it turned out that the controller was the problem this time, so just leave it.
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