Any 92mm fans that undervolt quietly ?

[Mixman]

I just bought a couple of these Panaflo 92mm fans. I have a Noise Isolator fan controller. When I turn them down at all they start whining. Meanwhile my 120mm Yate Loons are fine when turned down.

Any good 92mm fans, with at least 45cfm that I could get that undervolt well, without whining ? Any blue led fans that are good too ?

 

[w00t]

you might have a problem undervolting blue led fans since the led's need to be powered. I made a thread about the panaflo H 92mm fan i have and it's working right now at 7V it's whisper quiet. nice smooth sound low bearing noise.

 

[dunkster]

This might be helpful: http://www.silentpcreview.com/article284-page1.html

Read on to page 2 for the Zalman 9500 modded with 120mm fan.

One problem with the Zalman 9500 design is that the fan is stilt-mounted to physical heatsink, thus vibration-decoupling is difficult. About all you can do is select a fan with minimal vibration and try to balance speed/voltage with your minimum cooling requirement.

Hope this helps!

 

[Mixman]

Thanks but this is not for my Zalman, which I don't use anymore but for my TJ07 case.

you might have a problem undervolting blue led fans since the led's need to be powered. I made a thread about the panaflo H 92mm fan i have and it's working right now at 7V it's whisper quiet. nice smooth sound low bearing noise.

The Noise Isolator is a PWM fan controller, and I know it will strobe a little with blue led fans but that's ok, as long as those fans don't whine.

 

[GalvanizedYankee]

Originally posted by: Mixman
I just bought a couple of these Panaflo 92mm fans. I have a Noise Isolator fan controller. When I turn them down at all they start whining. Meanwhile my 120mm Yate Loons are fine when turned down.

Any good 92mm fans, with at least 45cfm that I could get that undervolt well, without whining ? Any blue led fans that are good too ?

I use to reccomend that Japanaflo 92x25, 48cfm@30dBA, w/BX=sensor wire from SVC.
But the dirty rotten dogs are selling a Chinaflo two wire fan in it's place. The former
was a very good buy, I bought several 90days ago.
If the pic is enlarged it can be read, Made in Japan and at the top a BX will be seen. This
is not the fan they are now selling for $4. Almost a bait and switch deal

From my personal=hands on experiance, the Delta Triple Blade 92x38, 57cfm@36dBA is
worth every penny of it's price. It will start/run at 3.5V reliably. At 5V it is silent.
I would not run it at 3.5V on a HS but as a case fan it will twirl with moving little
air at 3.5V. I'm not fond of PWM fan control but this fan did not protest being powered
by a NeXus fan controller at 7V.
I think the 36dBA rating on this fan is a mistake because at 12V it is only slightly
louder than the above Japanaflo at 12V. When both are at 7V the DTB drives more
air w/less noise. I just ran both of them.

I know nothing of LED fans and really don't care to find out But much good has
been posted about CoolerMaster LED fans.


...Galvanized

 

[Elcs]

Originally posted by: Mixman
I just bought a couple of these Panaflo 92mm fans. I have a Noise Isolator fan controller. When I turn them down at all they start whining. Meanwhile my 120mm Yate Loons are fine when turned down.

Any good 92mm fans, with at least 45cfm that I could get that undervolt well, without whining ? Any blue led fans that are good too ?

My Panaflo L1A's... (1 x 92mm and 2 x 120mm) were perfectly fine on my Noise Isolator, no whining.

They are fine on my new Sunbeam too.

I know some people have had problems with PWM but I didnt.

 

[Zepper]

Nidec, Delta, NMB, Sanyo Denki all undervolt well. But it may be the fan controller you are using. Poorly executed PWM controllers can cause fans to buzz or whine due to the output wave shape. A linear fan controller like the Sunbeam Rheobus (not the newer Sunbeams) won't cause that problem. You might be able to lessen the buzz/whine by soldering filter caps across the fan outputs of your controller to smooth out the wave a bit. But if you do that, you won't be able to reduce the fan speed as much because the caps will bridge and soften the pulses (more if larger, less if smaller - experimenting with sizes from 100uF to 2200uF at 16V or more, low ESR/high ripple tolerance, caps will probably find a usable balance)

.bh.