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PostPosted: Thu Feb 05, 2004 6:46 pm 
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Black Belt 1st Degree
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Joined: Tue Jun 10, 2003 5:05 pm
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Location: somewhere in canada
Something you should know, the decibles aren't everything. If it is high pitched it will drive you nuts!

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PostPosted: Thu Feb 05, 2004 7:37 pm 
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Black Belt 4th Degree
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Joined: Sun Dec 28, 2003 8:26 pm
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Location: Norwich, UK
True, but won't that mainly be caused by air resistance?

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PostPosted: Thu Feb 05, 2004 7:39 pm 
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Enlightened Master
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Joined: Wed Dec 11, 2002 2:29 pm
Posts: 14664
Location: Canada
sometimes. Other fans just have a damn whine due to rpm.


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PostPosted: Sat Feb 07, 2004 1:47 am 
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Brown Belt
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Joined: Tue Mar 25, 2003 9:56 pm
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My case was full of those "stamped" fan grills in its chassis. I have cut out (with small cutters) five of them (2 rear, 2 mobo side, 1 front) and sound levels have dropped considerably (though it is still loud due to the amount of fans I have) I now run three at low power (for hdd cooling) and the remainder at high power...


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PostPosted: Sat Feb 07, 2004 2:49 am 
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Green Belt
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Joined: Sun Sep 28, 2003 4:01 am
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Go to i think its overclockers.com, but one of the guys there, made a prog that calculates DBA from ur case fans.


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PostPosted: Sat Feb 07, 2004 3:40 am 
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Black Belt 4th Degree
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One of my cases has one of those stamped grills which probably blocks half of the air that is supposed to go through it. One of these days, I should cut that grill out and use one of those wire ones instead. That case is fairly flimsy, though; what would be the best method to go about cutting out the old grill?

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PostPosted: Sat Feb 07, 2004 3:53 am 
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Brown Belt
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I used a small pair of snips - (ones that have broad cutting blades that taper to a point), and just chomped out all the sections between grill at its outermost edge, then sanded and placed a chrome fan grill over the hole.

(An edit to my last post: all low voltage fans are now running at full steam again so noise is back up a bit once more)


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PostPosted: Sat Feb 07, 2004 4:04 am 
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Black Belt 2nd Degree
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Joined: Fri Dec 28, 2001 1:01 am
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Location: Downey, CA
Heres a couple links worth looking at:

http://www.directron.com/directron/noise.html

http://www.gizzo.8m.com/fans/

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PostPosted: Mon Feb 09, 2004 6:10 am 
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Mobo-fu Master
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Joined: Tue Sep 12, 2000 12:01 am
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Location: L-1 Bridge
Thanks for the links Wookie. 8)

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PostPosted: Thu Sep 08, 2005 7:20 am 
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Brown Belt
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Joined: Wed Apr 17, 2002 12:01 am
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If anyone's still wondering, 1dB is barely noticed; 10dB equals 10 times the sound pressure but sounds twice as loud; doubling sound sources makes about a 3dB difference.


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