Zitat von »Remayz«

it's possible it's heating up too much
DC control heats up the control device when supplying low voltage for low speed (more voltage drop = more heat). If you can feel the chip powering that channel is burning hot in use, maybe just adding a little thermal pad + heatsink will do the trick.

You also have the option to add a Poweradjust unit with Aquabus. single channel but that may be all you need. There's also heatsinks for those.

Or just upgrade to PWM :p DC control is very inefficient, and pretty much obsolete now. (but.. new controller + new fans $$ bit of future proofing)

Zitat von »InfoSeeker«

Zitat von »Dundys«

Yes I see it now, thank you.

How about Aquaero LT.
Is there a difference between XT and LT other then the display and RC, does the functionality is the same? If its the same, could I get LT and reinstall the display from my XT, would that work? My XT's first channel is acting up by randomly cutting off the voltage resulting in my NH-D15 either one or both fans stooping.

Thank you

Perhaps.
I once stated the LT could take a display module, but Shoggy corrected me saying some LTs are fine with the controller function, but fail the display function test, and would not correctly drive the display module. I do not know what the percentage are.

Zitat von »cptninc«

I think it might be less expensive to just upgrade to PWM fans. Noctua doesn't even have the 3-wire AF-15 listed on their website any more.

Zitat von »Remayz«

PWM does the same thing, but in a more stable manner actually.
depending on the fans it's hard to have stable low speeds on DC. some can stall while others still spin.
My current fans can go from 250 to 2500 RPM, and even at 250 RPM, they all run like clockwork, exactly the same speed. And contrary to DC they don't need a startup boost. they can start at 250 right away

Zitat von »Remayz«

motherboard or controller, it's the same.
if i set them to 7% they will run at 250 RPM no matter what controller sends the square wave.

And if they jump up in speed, there's more to it that just "PWM". it happens when the software craps out (Corsair, i look at you) or if the signal is garbled, like what happened with the first Noctua PPC industrial when used on splitters and on the very first EK Vardars. loss of signal = full speed.
Both of these fans have been reworked and now function properly. basically they didn't follow the specifications and it caused issues.

Otherwise no, it's smooth as eggs, and since the fans always have the full 12V powering them, they keep their torque even at low speed. so, wether they are in front of a filter, a rad, an aircooler or in open air as case fan, they will maintain their speed better than DC fans who will have a weaker supply at low speed.
Ah, and if you ever consider maglev fans for silence... these simply do not work in DC control since they need the full 12V to levitate the rotor.

Another big bonus of PWM is, since you do not vary voltage, you can use splitters more freely. DC controllers heat up a lot the more fans they drive per header.. Again, the Corsair commander pro popping output transistors is a good example of what can happen with splitters and DC fans :p (but it's a cheap ass unit with no heat sinking either)