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Post by Chuck Elliot on Jul 20, 2013 20:54:17 GMT -5
Looks great Chuck! I have to actually thank you as I had not heard of fans by Noctua. My new Panasonic plasma seems to get warmer in back on different sides where there are perforated vents, so I bought a couple of 80mm fan that I thought would be quiet attached them to those vents to draw out any heat. Well they weren't near as quiet I had hoped so I tried out Noctua fans, anyhow my plasma is now cool as a cucumber. Definitely quiet and I barely hear them while my home theater is idle. Noctua is great. My first use was for this project, but while waiting for the Lexan I ordered some 80mm and some 120mm for a couple of my computers. Excellent noise levels and great air flow. Glad you TV cooling worked out! |
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Post by Chuck Elliot on Aug 12, 2013 12:00:08 GMT -5
Now that I have everything back and running, I ran a cooling test using a oven digital thermometer stuck between the 2 1Ls. After 2 hours running temp was at 115F. Ambient in room was 80F as I have no AC in this room and this made a good test! More than happy with results!
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LCSeminole
Global Moderator 
Res firma mitescere nescit.
Posts: 20,850
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Post by LCSeminole on Aug 12, 2013 19:12:59 GMT -5
Now that I have everything back and running, I ran a cooling test using a oven digital thermometer stuck between the 2 1Ls. After 2 hours running temp was at 115F. Ambient in room was 80F as I have no AC in this room and this made a good test! More than happy with results! Good to hear your handy work has worked out for you, and thanks again for the Noctua fan's tip as my plasma run quite cool now. |
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Post by Chuck Elliot on Aug 12, 2013 21:02:38 GMT -5
Now that I have everything back and running, I ran a cooling test using a oven digital thermometer stuck between the 2 1Ls. After 2 hours running temp was at 115F. Ambient in room was 80F as I have no AC in this room and this made a good test! More than happy with results! Good to hear your handy work has worked out for you, and thanks again for the Noctua fan's tip as my plasma run quite cool now. Not only for the XPA-1Ls, I replaced all the fans with Noctua in the HTPC that drives the system and the noise level dropped in half!!!! |
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LCSeminole
Global Moderator
Res firma mitescere nescit.
Posts: 20,850
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Post by LCSeminole on Aug 12, 2013 21:20:31 GMT -5
Even better Chuck!  |
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Post by novisnick on Aug 12, 2013 21:34:20 GMT -5
Like I said before, the C-12 has my 1Ls running in the 90 degree F temp range Cool and looking good doing it
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Post by Chuck Elliot on Aug 12, 2013 22:17:34 GMT -5
Like I said before, the C-12 has my 1Ls running in the 90 degree F temp range Cool and looking good doing it I would have loved to use a C12, but just didn't have the physical room for one. I double checked the ambient temp in the room post testing and it was at 85F. 115F with that ambient isn't too shabby! The room gets a lot of sun and as I said no AC!!! |
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Post by novisnick on Aug 12, 2013 23:22:32 GMT -5
That's great, I rechecked my temps and there the same as yours, 85! Nice work.
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Post by mshump on Aug 13, 2013 10:51:14 GMT -5
Chuck, great solution !! Enjoy !!
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Post by Chuck Elliot on Sept 5, 2013 22:46:26 GMT -5
Finished the fan relay box tonight:   |
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LCSeminole
Global Moderator
Res firma mitescere nescit.
Posts: 20,850
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Post by LCSeminole on Sept 5, 2013 22:53:54 GMT -5
Nice work Chuck! Now sit back and enjoy the fruits of your labor! |
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Post by wizardofoz on Sept 6, 2013 2:58:21 GMT -5
I am in the middle of an amp build and found a small kit that has an NTC to tun on/off 2 relays at different settings...
when the heatsinks are below 40(c) degrees its off... when above 40 one relay turns on with a resistor to lower the voltage to the fan and above 55 the second relay turns on for full 12 volts ... perfect solution.
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Post by RightinLA on Feb 2, 2014 1:18:09 GMT -5
I applaud your efforts on your project, but are fans really necessary if you have sufficient space above and on the sides?
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Post by Chuck Elliot on Feb 2, 2014 9:09:23 GMT -5
I applaud your efforts on your project, but are fans really necessary if you have sufficient space above and on the sides? That's the whole point. I'm working under a constraint where I don't! The only way I'd run these guys un-fanned is with exposure on all sides, 6" of headroom and unstacked! YMMV |
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Post by solidstate on Feb 14, 2014 13:06:08 GMT -5
Noctua make great fans with FDB. I have a stack of them under my work bench I use for custom PCs. The only other better fans I've seen are from Panasonic and Sony but they are for commercial OEM/ODM.
BTW Chuck how hot do those amps run in class A mode?
It's important to note a lot of amps have thermal diodes for bias and if you have a fan blowing into the chassis there is a chance one diode might be cooled more than the others due to uneven air flow over certain areas of the PCB resulting in screwy bias.
Your cross flow fans won't affect this but placing fans on the top of the unit blowing into it sure as hell will.
The best way to vent a rack is from the top with the fans blowing up sucking air outta the rack as that's where all the heat builds up but it seems this isn't an option for you.
Those amps should be spaced 2U apart IMHO and it's a bad idea to stack them with the feet.
CLASS A CAN RUN VERY HOT!
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Post by Chuck Elliot on Feb 14, 2014 13:35:22 GMT -5
Yes, Noctua are just awesome! Four 140mm fans at low speed make no noise and are in a range that I consider good. I forget the exact temp figures now, but neither chassis becomes overly hot to touch. A/B is pretty much cool to the touch. I am torn to tell if there is any difference between A and A/B. Maybe my ears at 61 are just too old to tell. I've been running in A/B. |
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Post by solidstate on Feb 14, 2014 13:43:36 GMT -5
You know I've said this at DIY GTGs and people think I'm nuts...
uh...
Have you ever had the earwax flushed outta your ears before?
If not...
DO IT!
Get your MD to flush your ears out to remove ALL WAX and be insistant on it as MDs believe they should leave some inside your ears.
Western MDs tend to not do this as they feel the wax prevents infection etc. In Asia where they have a different dry ear wax MDs blow wax out all the time.
If you have never had this done I assure you that you have pencil eraser head sized balls of wax in your ears.
After all the cerumen is outta your ears be prepared to be BLOWN AWAY at your newly found AMAZING HEARING...
TRUST ME ON THIS PEOPLE
PS ear candles etc are BS... get a doctor to do it.
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Post by Chuck Elliot on Feb 14, 2014 18:27:09 GMT -5
My other big hobby is scuba diving. Everything you say about ears is absolutely true. I use 1/2 hydrogen peroxide 1/2 water to flush my ears twice a month. This is followed by several flushes with warm water. As a diver you know if you have ear wax if you have problems equalizing pressure differences as you descend. I got this advice after visiting an ENT in Boston who was also a master/technical diver. Chuck  |
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biffy7
Seeker Of Truth
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Post by biffy7 on Oct 3, 2014 11:07:50 GMT -5
I know this thread is old. But Chuck if you read it. Please add fuses to your AC line for the fans.
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Post by pedrocols on Oct 3, 2014 11:41:41 GMT -5
I know this thread is old. But Chuck if you read it. Please add fuses to your AC line for the fans. I think the line is DC not AC. |
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