Koolance EXOS is not silent in mode 1

tijean · Post by **tijean** » Sun Jul 04, 2004 8:45 pm

Hi, it's not silent at all in mode 1 like mentionned in another thread.
I want to replace the fans to get the same performance with less noise.
Btw the performance are great compare to my old Zalman CNPS 7000cu. I'm cooling an ATI 9800 pro and a P4 3.2, in load mode I went from 47-48c to 33-34. Plus I can touch the back of the GPU and it's only a bit warm.

So I know Panaflo are the best choice, but wich one ? medium or high speed model ?

thanks

chylld · Post by **chylld** » Mon Jul 05, 2004 5:53 am

Welcome to SPCR, tijean!

if silence is what you want then the low speed model is really your only option. i know from testing the papst 120mm L vs ML, the ML is way too loud and the L gives essentially the same performance anyway.

low-speed is my recommendation

tijean · Post by **tijean** » Mon Jul 05, 2004 6:17 am

thanks for the reply but the koolance exos is using 3 80mm fans, i'm not sure that low speed would be enuff. I already have panaflo low speed in my case and they don't move much air at 5v. I was hoping that someone here did the modification.

tijean · Post by **tijean** » Wed Jul 07, 2004 6:45 am

I'm waiting for 3 PANAFLO H1A today , will post the result. It will be a worldwide premiere

tijean · Post by **tijean** » Wed Jul 07, 2004 10:04 am

Well just install the Panaflo H1A, and they don't spin at all at 5 volts. Great !

jinu117 · Post by **jinu117** » Thu Jul 08, 2004 3:40 pm

Here is my suggestion. Put exos as far away as possible from where you are. Instant reduction of noise level. If you still hear same amount after moving it past 2 ft from where it might be at... (which probably is what you can do with most exos set ups

your sound is coming from case...

ONEshot · Post by **ONEshot** » Thu Jul 08, 2004 4:23 pm

Wait... they DONT spin at 5 volts, and that's good? I'm confused. Or was that sarcastic.

ANYWAYS, Maybe you can try using homebuilt 80-120mm fan adapters.

just hook up three Papst 120s to eachother, then take out the 3 fans in the Exos, then make your own little funnel from the three papsts into the holes where the 3 fans used to be. Instant fan replacement, and the 3 big fans should have the same amount of pull with less noise.

Especially the H1As.

acaurora · Post by **acaurora** » Fri Jul 09, 2004 12:03 pm

Ok, the EXOS uses 3 pin fans, right? I am thinking about getting an EXOS Al myself, with the H06 and L06 waterblocks. I most likely will be using M1As instead of L1As, because, like others, I'm worried that the L1As won't move enough air.

tijean · Post by **tijean** » Fri Jul 09, 2004 3:47 pm

It was sacartic yes.. Moving it away, well I already cut the tube..would have to buy other tubing and the power cord isn'' that long...

Don't buy Panaflo M1A, yes the logic circuit board of the exos has 3 pins connector, but in mode 1 the Panaflo don't spin (5v) so you must use them in mode 3 (12v).. so it's useless because panaflo m1a mode 3 = noise.

So I just ordered 3 Silentx 1400rpm 9db , I will use them in mode 3.

Today I also discover that using only 2 fans instead of 3 give me the same temp result, so less fans = less noise

So monday I will receive my Silentx and give you my result.

Well the ideal would be to find a fan that spin at 5v and deliver good airflow with no noise. I didn't succed.

tijean · Post by **tijean** » Fri Jul 09, 2004 3:48 pm

It was sacartic yes.. Moving it away, well I already cut the tube..would have to buy other tubing and the power cord isn'' that long...

Don't buy Panaflo M1A, yes the logic circuit board of the exos has 3 pins connector, but in mode 1 the Panaflo don't spin (5v) so you must use them in mode 3 (12v).. so it's useless because panaflo m1a mode 3 = noise.

So I just ordered 3 Silentx 1400rpm 9db , I will use them in mode 3.

Today I also discover that using only 2 fans instead of 3 give me the same temp result, so less fans = less noise

So monday I will receive my Silentx and give you my result.

Well the ideal would be to find a fan that spin at 5v and deliver good airflow with no noise. I didn't succed.

acaurora · Post by **acaurora** » Fri Jul 09, 2004 4:06 pm

Ok, cool. Thanks for the heads up. I look forward to your post next week

tijean · Post by **tijean** » Fri Jul 09, 2004 6:19 pm

Maybe you would find the original fans in mode 1 to be actually quiet. I might be a bit too sensitive about noise

tijean · Post by **tijean** » Fri Jul 09, 2004 6:20 pm

Maybe you would find the original fans in mode 1 to be actually quiet. I might be a bit too sensitive about noise

acaurora · Post by **acaurora** » Sat Jul 10, 2004 6:02 am

Well the thing is, I talked to Ralf, and he said that all the M1As he's used have started up fine @ 5V. I probably will check with FrozenCPU just to be sure. Then if everything checks out, I'll get the EXOS AL with the H06 + L06 to slap onto my X800XT (when it arrives, and I"ll let you guys know how it goes.)

tijean · Post by **tijean** » Sat Jul 10, 2004 9:00 am

Hi... when I pluged the Panaflo directly to a molex connector using a 12v-5v splitter then it will spin, yes. But connecting them to the Exos PCB, they won't. Go figure why ?

acaurora · Post by **acaurora** » Sat Jul 10, 2004 4:21 pm

12V-5V splitter? you mean a 12V to 5V adapter?

So all the fans use MOLEX or MOTHERBOARD 3 pin connectors?

tijean · Post by **tijean** » Sun Jul 11, 2004 8:46 pm

3 pins connector.

The Muti-connector, included free in every Zalman power supply, is used to supply +5V or +12V power to any additional fans that a user may wish to install. Connect it to the power supply's output connector (P9) and simply attach the fans to the 3-pin connectors at the other end.

look here for the picture of the connector.

http://www.zalmanusa.com/eng/product/vi ... 6&code=015

tijean · Post by **tijean** » Sun Jul 11, 2004 8:46 pm

3 pins connector.

The Muti-connector, included free in every Zalman power supply, is used to supply +5V or +12V power to any additional fans that a user may wish to install. Connect it to the power supply's output connector (P9) and simply attach the fans to the 3-pin connectors at the other end.

look here for the picture of the connector.

http://www.zalmanusa.com/eng/product/vi ... 6&code=015

acaurora · Post by **acaurora** » Sun Jul 11, 2004 8:48 pm

perhaps the EXOS' starting voltage is < 5V? Can you check ?

Edward Ng · Post by **Edward Ng** » Sun Jul 11, 2004 8:48 pm

Echo...echo..echo...

acaurora · Post by **acaurora** » Sun Jul 11, 2004 8:54 pm

Yah i know ~.~

tijean · Post by **tijean** » Mon Jul 12, 2004 7:53 pm

The Exos start at 12v then goes to 5v .... I didn't receive my silentx today..They seem to be lost in the mail.. I must contact postal service tomorrow.

acaurora · Post by **acaurora** » Mon Jul 12, 2004 8:18 pm

Oh well. Too late. I already bought the EXOS Al/3 M1As.

I will find out tomorrow when the M1As arrive if they work or not *gulp*. I put in a special request for them to bundle whatever fan tails work with the EXOS Al, 3 pin or 4 pin molex. Hopefully they read it. -.-;;

tijean · Post by **tijean** » Tue Jul 13, 2004 4:03 pm

Well my package is lost

Won't have my new fans for a while...

acaurora · Post by **acaurora** » Tue Jul 13, 2004 4:06 pm

~.~ Oh well. My EXOS hasn't arrived yet. Probably will tomorrow. I will be gone for a week starting on the 17th. However, I am considering delaying putting in the EXOS until I order the Lian Li V1000 that i've been craving, which if I order probably won't arrive for another 2 weeks. So yah... back to pondering my options...

Edward Ng · Post by **Edward Ng** » Tue Jul 13, 2004 4:06 pm

acaurora · Post by **acaurora** » Tue Jul 13, 2004 4:10 pm

Hey Edward! What do you think I should do? Wait til I get a V1000 (actually a V1100 seems a better solution, has dampening already installed...) and put in the EXOS Al, or just do it now and then transfer later on? I am thinking of holding off until the V1100/V1000, whichever one I figure out I want arrives, since the tubing may need to be longer/shorter when that case comes... ?

Edward Ng · Post by **Edward Ng** » Tue Jul 13, 2004 4:14 pm

I wish I had some actual hands-on water cooling experience to support this opinion, but I'm the lazy sort who would rather just wait if it means saving myself some energy; unless, of course, I were to do it and report it as a review or article.

Do you mind doing that?

I'm more and more motivated daily to dive into water cooling, but I'm having a tough time deciding on an all-in-one solution like EXOS, vs. doing the whole kit by hand (I've in mind a full PolarFlo block set, BlackIce Xtreme radiator and pump undetermined, likely Eheim 1048); the thing is, I imagine it difficult to really get EXOS to run quietly enough. Maybe you can prove me wrong?

-Ed

PS Perhaps Ralf or Russ might be able to help; Russ has plenty of H2O-hours behind him.

acaurora · Post by **acaurora** » Tue Jul 13, 2004 4:26 pm

Well this is what I plan on doing (I wonder if you can forward this to Ralf/Russ... I don't really know how to contact him...)

I plan on getting the V1100 (I was origionally thinking of the V1000, people said it was quiet enough, but I'm somewhat paranoid, and lazy. It has sound dampening foam all over the place, and plates over the bottom intakes to muffle the noise [but can't that also obscure the vent, defeating the whole purpose of having bottom intake?]). Then, I plan on putting an EXOS Al with M1As in it. Ralf? Mike? Russ? Anyone? What do you think? Sounds feasible? I also plan on making my own little duct/chimney, because my desktop sits under a desk, so the chimney/duct would carry the hot exhaust of the EXOS out from the desk (and also away from me) while also muffling the sound a little bit

. So, theoretically, the only noise leakage would be mainly from the back of the case, minimally from the bottom, and minmally from the side vents of the EXOS Al. Am I correct? Thoughts? Questions? Flames?

I will be going on a week-long vacation starting on the 17th, and the EXOS/fans are expected to arrive tomorrow/thursday. Chances are I probably will hold off until I get the V1100 when I get back.

EDIT: I'm worried about the front intake for the V1100/bottom vents though, because both look somewhat restricted due to the metal plates (bottom vents) and lack of space/intake for the front. Anyone know if my suspicions are correct?

I chose an all in one solution because it is simpler. I do not want to have to deal with an ugly mess/setup for DIY kits.

wumpus · Post by **wumpus** » Tue Jul 13, 2004 4:54 pm

I have a koolance pc, which has essentially the same exact thing as the Exos permanently attached to the top of the case.

It ain't quiet. The big problem is the (three) fans are mounted on top, with a direct path to your ears. There's no getting around that. I would not recommend a Koolance to any quiet enthusiast for this very reason.

I modified my Koolance pc by installing 3 L1As, which as correctly stated earlier in the thread, DO NOT SPIN UP by default. But don't panic! This is actually a good thing, at least for the desktop case. There is enough ambient airflow (I have two L1As in the case itself, traditional locations: one intake, one exhaust) to more than adequately cool the case with totally passive airflow across the radiator. When I play a game, the waterblock heats up enough to go to mode 2, and then the fans kick in. When it cools down enough, the fans go back to mode 1 and stop spinning.

This cools an overvolted P4-3.2c and a Radeon 9800 pro just fine, which goes to show you just how efficient watercooling really is.