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D5 noise at certain RPMs

post #1 of 7
Thread Starter 
I've got an EK D5 PWM pump and it's near silent at most speeds, but in the 2500 - 3000 range it makes a noticeable whirring noise on and off. I currently set it to run at a minimum of 3200 to eliminate that, but I'm curious if anyone has run in to similar issues. Any advice welcome and thanks in advance. smile.gif
Edited by james41382 - 12/6/15 at 9:21pm
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Neophyte
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post #2 of 7
Thread Starter 
*bump*
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post #3 of 7
Mine has such bad vibes at 2600-2700 it shakes my desk and gets very loud, I just keep it out of that range. Its pretty common because they don't balance the rotors very well.
post #4 of 7
mine does this too. I don't monitor the RPM... but at speed 2-3 it vibrates a bit. 4 and 5 are actually the quietest.
    
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post #5 of 7
It sounds funny on certan rpm yes, I have mine on 4.5 which is quiet belive it or not. These D5 are pretty random when it comes to noise/rpm.
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post #6 of 7
Yup same issue here. My pumps sweet spot is at 3300RPM. higher or lower just a tiny bit and it gets a loud noise too. Glad I bought the vario model so I can set it and forget it. thumb.gif
post #7 of 7
Thread Starter 
Quote:
Originally Posted by Scorpion49 View Post

Mine has such bad vibes at 2600-2700 it shakes my desk and gets very loud, I just keep it out of that range. Its pretty common because they don't balance the rotors very well.

I don't think mine is quite that bad, but it's loud enough to hear, which is annoying.

Quote:
Originally Posted by iCrap View Post

mine does this too. I don't monitor the RPM... but at speed 2-3 it vibrates a bit. 4 and 5 are actually the quietest.

Based on the replies looks like the mid range is the worst. The PWM version is from 1450 - 4800. For me it's bad roughly between 2500 - 3000 RPMs.

Quote:
Originally Posted by PachAz View Post

It sounds funny on certan rpm yes, I have mine on 4.5 which is quiet belive it or not. These D5 are pretty random when it comes to noise/rpm.

I'm good below 2500 or above 3000 so I just set the low point to 70% duty cycle, which is about 3200RPM, at 30°C and scaled up from there to 90% duty cycle at 75°C

Quote:
Originally Posted by kl6mk6 View Post

Yup same issue here. My pumps sweet spot is at 3300RPM. higher or lower just a tiny bit and it gets a loud noise too. Glad I bought the vario model so I can set it and forget it. thumb.gif

I was able achieve a work around with the PWM version as well, but it would be nice if it was inaudible at all frequencies. Oh well at least now I know it's not just me. rolleyes.gif
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Intel 5930k Asus X99 Rampage Edition 10 2x Zotac GTX 980Ti G.SKILL Ripjaws 4 
Hard DriveHard DriveCoolingCooling
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CoolingCoolingCoolingCooling
EK-Supremacy EVO Nickel Plexi 2x EK-FC TitanX/980Ti (Original CSQ) Nickel Plexi 2x EK-FC TitanX/980Ti Backplate (Black) EK HDC Nickel Fittings 
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EK PETG Tubing AlphaCool NexXxoS Monsta 560 Windows 10 Pro BenQ XL2420TE 24" 144 Hz 1080p 
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Neophyte
(29 items)
 
  
CPUMotherboardGraphicsRAM
Intel 5930k Asus X99 Rampage Edition 10 2x Zotac GTX 980Ti G.SKILL Ripjaws 4 
Hard DriveHard DriveCoolingCooling
Samsung 840 EVO 1TB 2x Seagate Barracuda 3TB (RAID1) EK Revo Dual D5 AlphaCool NexXxoS XT 45 480 
CoolingCoolingCoolingCooling
Bitspower Matte Black V3 Fittings PrimoFlex Advanced LRT Tubing Clear Mayhems Pastel Blueberry EK-XRES 250 w/ Multiport Top 
CoolingCoolingCoolingCooling
EK-Supremacy EVO Nickel Plexi 2x EK-FC TitanX/980Ti (Original CSQ) Nickel Plexi 2x EK-FC TitanX/980Ti Backplate (Black) EK HDC Nickel Fittings 
CoolingCoolingOSMonitor
EK PETG Tubing AlphaCool NexXxoS Monsta 560 Windows 10 Pro BenQ XL2420TE 24" 144 Hz 1080p 
MonitorKeyboardPowerCase
2x BenQ GL2460HM 24" 60Hz 1080p Ducky DK2108SZ Black Seasonic X-1050 80+ Platinum Case Labs SMA8 
MouseAudioAudioAudio
Razer DeathAdder FX Audio DAC-X6 AKG K7XX (Mass Drop Limited Edition) MXL V67GS Condenser Mic 
Audio
MXL MicMate Pro 
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