Bought four new NMB fans... wow I am dissapointed.

Insolence · Post by **Insolence** » Wed Nov 17, 2004 9:08 pm

Whine like hell, JUST like the fans I had before! (bought 4, wasted $30...)

Whenever I try to lower the voltage to them with my Thermaltake XTunner, they immidiately die. Is there any way around this?

Right now I just have my exhaust fan hooked up to the mobo TRYING to slow it down a tad with ASUS Q-Fan, but the RPM is exactly the same as it was before I set Q-Fan up... doesn't seem to be working.

Help!

EDIT: http://www.directron.com/3110kl.html are the fans, btw.

lenny · Post by **lenny** » Wed Nov 17, 2004 10:51 pm

That's a 3110KL-04W-B66 (0.34A @ 12V). Definitely not one of their low speed fans. From http://www.nmbtech.com it shows that your fan is a temperature detecting variable speed fan.

The one you should look for is 3110KL-04W-B10 (0.10A @ 12V). 3110KL-04W-B19 (if I remember correctly) is the version with tach output.

bestbyte.net used to carry some for a very low price. Same for SVC. Unfortunately both of them don't seem to have it anymore. I bought mine a year ago on eBay - some guy sold me 5 for $10 or so.

They're not quite as good as the Panaflos I have (bought more than a year ago from various sources) but they're fairly decent.

Insolence · Post by **Insolence** » Wed Nov 17, 2004 10:57 pm

But how do I go about lowering the voltage?

lenny · Post by **lenny** » Wed Nov 17, 2004 11:05 pm

Insolence wrote:But how do I go about lowering the voltage?

I edited my post to add that your fan is a temperature sensing variable speed fan after you posted.

Is your fan powered off 3 pin motherboard header or 4 pin PSU molex?

If 3 pin motherboard header, the easiest way is to either run Speedfan (if supported by your motherboard) or get a Zalman fanmate.

If 4 pin molex, you can wire it for 5V or 7V. Search the forums for "7V mod". There's some concern it might damage the PSU. There has been no concrete evidence either for or against that concern.

There are cables available to convert from 3 pin to 4 pin and other way around. Check www.svc.com for different types.

Insolence · Post by **Insolence** » Thu Nov 18, 2004 6:37 am

But I lower their voltage with my fan controller right now... and they just shut off.

Should they be working?

t_k · Post by **t_k** » Thu Nov 18, 2004 8:28 am

Insolence wrote:But I lower their voltage with my fan controller right now... and they just shut off.

Should they be working?

They should. My Papst and ADDA fans do that.

That website said: Notes: (1) To reduce the noise level from this fan, please add a 12-to-7 volt adapter

You've tried that?

Insolence · Post by **Insolence** » Thu Nov 18, 2004 3:38 pm

No I haven't tried that.

I don't want to spend any more money...

Straker · Post by **Straker** » Fri Nov 19, 2004 12:58 am

good, 'cause they're free... just use an appropriate tool (screwdriver, disassembled collapsible antenna, or a headphone plug with the end cut off, whatever) to get the ground pin out of the molex connector, and move it to the 5V pin.

lenny · Post by **lenny** » Fri Nov 19, 2004 2:24 am

Or use a voltmeter to adjust fan controller output to 7V.

Insolence · Post by **Insolence** » Sat Nov 20, 2004 12:15 pm

Straker, do you have anything that is diagraming this, possibly?

EDIT: Why should I even have to do this if I have a fan controlller?

Post by **Ralf Hutter** » Sun Nov 21, 2004 6:56 am

Insolence wrote:Straker, do you have anything that is diagraming this, possibly?

"Get 12V, 7V or 5V From Your Fans". Posted right here at good 'ol SPCR.

Insolence · Post by **Insolence** » Sun Nov 21, 2004 12:58 pm

OK, my fan is 3 pin, and what is the difference of that and a fan controller?