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Fan grill noise

post #1 of 7
Thread Starter 
Ugh. Just installed 3x 120mm and 1x 140mm high speed Yate Loons in my case, 2x 120mm on side, 1x as exhaust, and the 140mm as intake on bottom.
There's an annoying buzzing (?) sound that comes from the fan grill at everywhere that I setup as intake.
How do I know it's coming from the grill? Switching them to exhaust or putting them outside (as opposed to inside normally) the case so that air is pushed across the grill instead of pulled removes the noise almost completely.
It's not the fan vibrating against the case, since holding the fan at about 0.5-1cm away produces the same noise.
It's also not the fan itself. There's only the loud whoosh when the fan is by itself (absolutely no other noise whatsoever, regardless of the orientation of the fan).
As a result I have ordered a fan controller (Rheosmart 6), but I really don't want to have to turn the fans down, loving the airflow so far. I also want them inside the case, unfortunately.
Any tips? This is getting really annoying.
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post #2 of 7
try this

http://www.frozencpu.com/products/34...jVY3&mv_pc=287

and long fanscrew
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post #3 of 7
Rubber screws or padding work great. I got rubber screws with Excalibur, and they are nice.



See the long rubber ones. They work great.
pron.
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pron.
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post #4 of 7
Thread Starter 
Thing is, the side fans are really close to touching the heatsink pipes, but I'll definitely try it with the bottom fan.
Right now I have them on a controller, so it's not too bad.
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Hard DriveHard DriveHard DriveCooling
Samsung 840 128 GB Plextor M3 128 GB 4x Western Digital Red 4 TB Swiftech Apogee Drive II 
CoolingCoolingCoolingCooling
BitFenix Spectre Pro 200x25 Fan 3x Sanyo Denki 9s1212h4011 San Ace 120x25 Fans Alphacool Nexxxos 7950 V2 Full Cover Phobya Xtreme 200mm Radiator 
CoolingCoolingCoolingOS
Black Ice GTS 240mm Radiator Unknown 120mm Copper Radiator Bitspower Fittings with Acrylic Tubing Arch Linux 
OSMonitorMonitorMonitor
Windows 7 Ultimate Dell UltraSharp U2311H  Dell UltraSharp U2311H  Dell UltraSharp U2311H 
MonitorKeyboardPowerCase
Ergotech 100-D16-B03 Triple Horizontal LCD Moni... Monoprice MP-GBL4 CherryMX Red Mechanical Keyboard Silverstone ST45SF-G BitFenix Prodigy 
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Cooler Master Storm Spawn Custom Printed (侠客行)  Pioneer VSX-1122-K Pioneer SP-BS41-LR 
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post #5 of 7
Yea mine made annoying wooshing sounds but then i cut out the grills. Now its gone
    
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post #6 of 7
OP: you said that you have the fans on a fan controller - is it a true rheostat/rheobus controller, or a PWM controller?

If it's a PWM one - that is the source of your buzzing noise coming from the fans. Some fan brands simply do not like PWM controllers, and will emit a buzzing noise from the motor due to the Pulse Width Modulation that the fan controller... well, controls.

Try running the fans directly off a a molex, or if you absolutely must have a fan controller - look into a true rheostat/rheobus controller (one of these will have heatsinks attached to the VRM's). My favorite controller would be either the 4 or 6-channel Sunbeam rheobusses:

http://www.newegg.com/Product/Produc...%206%20channel
    
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post #7 of 7
Thread Starter 
Quote:
Originally Posted by iCrap View Post
Yea mine made annoying wooshing sounds but then i cut out the grills. Now its gone

Quote:
Originally Posted by CrimsonMango View Post
OP: you said that you have the fans on a fan controller - is it a true rheostat/rheobus controller, or a PWM controller?
The noise is what made me buy the controller. I had them running directly off the PSU for a couple of days, then gave in and bought it.
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Intel Core i5 3570K 4.8GHz @ 1.37V Asrock Z77E-ITX PowerColor PCS+ AX7950 3GBD5-2DHPP 1.2/1.5GHz @... Crucial Ballistix Sport 16 GB 1.35 V 
Hard DriveHard DriveHard DriveCooling
Samsung 840 128 GB Plextor M3 128 GB 4x Western Digital Red 4 TB Swiftech Apogee Drive II 
CoolingCoolingCoolingCooling
BitFenix Spectre Pro 200x25 Fan 3x Sanyo Denki 9s1212h4011 San Ace 120x25 Fans Alphacool Nexxxos 7950 V2 Full Cover Phobya Xtreme 200mm Radiator 
CoolingCoolingCoolingOS
Black Ice GTS 240mm Radiator Unknown 120mm Copper Radiator Bitspower Fittings with Acrylic Tubing Arch Linux 
OSMonitorMonitorMonitor
Windows 7 Ultimate Dell UltraSharp U2311H  Dell UltraSharp U2311H  Dell UltraSharp U2311H 
MonitorKeyboardPowerCase
Ergotech 100-D16-B03 Triple Horizontal LCD Moni... Monoprice MP-GBL4 CherryMX Red Mechanical Keyboard Silverstone ST45SF-G BitFenix Prodigy 
MouseMouse PadAudioAudio
Cooler Master Storm Spawn Custom Printed (侠客行)  Pioneer VSX-1122-K Pioneer SP-BS41-LR 
OtherOtherOtherOther
90W Voltage-Controller-On-Breadboard PWM-Controller-On-Breadboard Marvell PM9172 SATA3 to mini PCIe Adapter Intel 7260HMW mini PCIe Adapter 
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Intel i5 3317u OEM OEM 4GB MyDigitalSSD BP4 240GB 
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