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Old 09-15-2014, 02:29 PM - Thread Starter
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Inuke fan mod test results

I recently built a sub with an SI Ht18 and inuke 3000dsp. I read about how loud stock fans were on numerous pro style amps but never had first hand experience till now and I must say in its stock form it's not suitable for home theater when it's in the same room. I ordered a Noctua NF-r8 off amazon for around $14. I used a spl meter and ran a test with both fans at idle and a test after going through a couple low and loud sign waves. I thought I would post actual readings so people don't have to rely on taking people's word if they want to switch fans.
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Old 09-15-2014, 02:30 PM - Thread Starter
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Stock at idle
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Old 09-15-2014, 02:31 PM - Thread Starter
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Stock after sign waves
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Old 09-15-2014, 02:33 PM - Thread Starter
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Noctua at idle, my spl meter couldn't read that low
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Old 09-15-2014, 02:36 PM - Thread Starter
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Noctua after sign waves. Needless to say its a night and day difference and I highly recommend it if you have these amps!
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Old 09-15-2014, 02:55 PM
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Do they cool as well as stock fans? Some people have mentioned that their i nukes (6000 mainly) overheat after fan mod...
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Old 09-15-2014, 03:06 PM
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Quote:
Originally Posted by mlah384 View Post
Do they cool as well as stock fans? Some people have mentioned that their i nukes (6000 mainly) overheat after fan mod...
The Noctua NF-R8 fans move up to 53 m³/h which is plenty for these amps. Some of the bestbuy/radio shack replacements that some folks use provide significantly less airflow than these, and that's where some run into trouble.
These fans are great! I put two of them in my NU4-6000 and they are indeed dead silent. I have run at high volumes for 8-10 hours straight and have never had an issue. Feeling the air coming from the front of the amp after watching a movie at reference, the air is luke warm at most. They are a bit more expensive than others, I paid $24 for a 2-pack, but well worth it IMO.
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Old 09-15-2014, 03:49 PM
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Quote:
Originally Posted by dtsdig View Post
The Noctua NF-R8 fans move up to 53 m³/h which is plenty for these amps. Some of the bestbuy/radio shack replacements that some folks use provide significantly less airflow than these, and that's where some run into trouble.
These fans are great! I put two of them in my NU4-6000 and they are indeed dead silent. I have run at high volumes for 8-10 hours straight and have never had an issue. Feeling the air coming from the front of the amp after watching a movie at reference, the air is luke warm at most. They are a bit more expensive than others, I paid $24 for a 2-pack, but well worth it IMO.
Really good to know! Thanks! I'm about to order a 6000dsp for 2 Ultimax 18's and I wanted to do the fan mod but was worried about heat issues....

Also, I guess the mod is pretty easy with these?
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Old 09-15-2014, 03:57 PM
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Omg! I need to get these ASAP!

Quote:
Originally Posted by dtsdig View Post
The Noctua NF-R8 fans move up to 53 m³/h which is plenty for these amps. Some of the bestbuy/radio shack replacements that some folks use provide significantly less airflow than these, and that's where some run into trouble.
These fans are great! I put two of them in my NU4-6000 and they are indeed dead silent. I have run at high volumes for 8-10 hours straight and have never had an issue. Feeling the air coming from the front of the amp after watching a movie at reference, the air is luke warm at most. They are a bit more expensive than others, I paid $24 for a 2-pack, but well worth it IMO.
Just to confirm...DTS, are you using the these: http://www.amazon.com/Noctua-NF-R8-P...s=Noctua+NF-R8

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Old 09-15-2014, 04:03 PM
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Quote:
Originally Posted by dtsdig View Post
The Noctua NF-R8 fans move up to 53 m³/h which is plenty for these amps. Some of the bestbuy/radio shack replacements that some folks use provide significantly less airflow than these, and that's where some run into trouble.
These fans are great! I put two of them in my NU4-6000 and they are indeed dead silent. I have run at high volumes for 8-10 hours straight and have never had an issue. Feeling the air coming from the front of the amp after watching a movie at reference, the air is luke warm at most. They are a bit more expensive than others, I paid $24 for a 2-pack, but well worth it IMO.
Would you happen to have the Link from where you got the 2 pack ?

Thanks!
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Old 09-15-2014, 04:07 PM
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Yes, please.

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Old 09-15-2014, 04:12 PM
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Noctua didn't work for me with 6000. Was getting amp to shut down. There movement is low. Only 20cfm at lower speeds. If your room is hot then it doesn't cool well at lower volumes. Turning the bass up the fan tops out at 35cfm. At higher volumes the fan does ok. The stock fans are 60 cfm. I replaced the noctua with thermaltake duramax. It has constant fan at 39cfm. No issues. Today 30° (90 farenheit)in my living room . I much prefer thermaltake and moves air. Its louder at 30dbs. Any louder and it would be too loud.
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Old 09-15-2014, 04:20 PM
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Quote:
Originally Posted by chalugadp View Post
Noctua didn't work for me with 6000. Was getting amp to shut down. There movement is low. Only 20cfm at lower speeds. If your room is hot then it doesn't cool well at lower volumes. Turning the bass up the fan tops out at 35cfm. At higher volumes the fan does ok. The stock fans are 60 cfm. I replaced the noctua with thermaltake duramax. It has constant fan at 39cfm. No issues. Today 30° (90 farenheit)in my living room . I much prefer thermaltake and moves air. Its louder at 30dbs. Any louder and it would be too loud.
How do you know if a fan works on 2 speeds or is constant like you say yours is?

Does the 2 speed have 3 wires ?

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Old 09-15-2014, 04:28 PM
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Quote:
Originally Posted by randyc1 View Post
How do you know if a fan works on 2 speeds or is constant like you say yours is?
Its in product details. Will say constant or variable.
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Old 09-15-2014, 04:37 PM
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Quote:
Originally Posted by chalugadp View Post
Its in product details. Will say constant or variable.
Wonder if it could be wired to run at just highest speed?
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Old 09-15-2014, 05:21 PM
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Quote:
Originally Posted by randyc1 View Post
Would you happen to have the Link from where you got the 2 pack ?

Thanks!
Yes!
http://www.amazon.com/gp/aw/d/B001QYLOA4?me=&ref=olp_product_details
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Old 09-15-2014, 05:34 PM
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Quote:
Originally Posted by chalugadp View Post
Noctua didn't work for me with 6000. Was getting amp to shut down. There movement is low. Only 20cfm at lower speeds. If your room is hot then it doesn't cool well at lower volumes. Turning the bass up the fan tops out at 35cfm. At higher volumes the fan does ok. The stock fans are 60 cfm. I replaced the noctua with thermaltake duramax. It has constant fan at 39cfm. No issues. Today 30° (90 farenheit)in my living room . I much prefer thermaltake and moves air. Its louder at 30dbs. Any louder and it would be too loud.
Which specific Noctua model did you try? Did you add any of the "low noise adaptor" wires that they come with? Did you use the 3rd yellow wire (for RPM) or just the positive and negative. I'm just asking because I have never read anyone else having that issue with the NF-R8 80mm fans. They are spec'd at 31.2 cfm if they are hooked up without using the low noise adaptors. Just curious.
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Old 09-15-2014, 05:36 PM
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^^^^^

Did you use any of the lower noise adapters or just go stock?

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Old 09-15-2014, 05:48 PM
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Here's the specs from the Noctua web site. They say it's discontinued, so I wonder how long they'll still be available? There isn't an exact match in their present lineup. There's one that spins a bit faster and one that spins a bit slower. The NF-A8 FLX (the faster one) looks like a better match. Although RPM is faster, airflow is a bit less, and it's a bit quieter.
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Old 09-15-2014, 05:57 PM
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I see these Noctua's at Newegg: http://www.newegg.com/Product/Produc...rder=BESTMATCH

What about these fans?

Thermaltake DuraMax 8 AF0058 http://www.newegg.com/Product/Produc...82E16835106180
38.2 CFM
31.3 dBA

Thermaltake Mobilefan II External USB http://www.newegg.com/Product/Produc...82E16811999130
47.28 CFM
31 dBA

Newegg lets you search by Air Flow, Noise Level, Size, etc...
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Old 09-15-2014, 06:05 PM
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With the stock fans do they run at 2 speeds ?
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Old 09-15-2014, 06:22 PM
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Quote:
Originally Posted by dtsdig View Post
Which specific Noctua model did you try? Did you add any of the "low noise adaptor" wires that they come with? Did you use the 3rd yellow wire (for RPM) or just the positive and negative. I'm just asking because I have never read anyone else having that issue with the NF-R8 80mm fans. They are spec'd at 31.2 cfm if they are hooked up without using the low noise adaptors. Just curious.
31 cfm isn't enough in my hot living room. Tried both noctua fans. Ill sell my two rf8 fans for $2 plus shipping . Shipping would probably be $8, so $10 total
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Old 09-15-2014, 06:56 PM
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Quote:
Originally Posted by chalugadp View Post
31 cfm isn't enough in my hot living room. Tried both noctua fans. Ill sell my two rf8 fans for $2 plus shipping . Shipping would probably be $8, so $10 total

Just to be clear chalugadp , you mentioned that at high vol everything was ok ,... it was at low vol that the amp overheats , so the amp was controlling the fan speed ? If so,.. does your new fan go from low to high speed also??
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Old 09-15-2014, 07:14 PM
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Quote:
Originally Posted by randyc1 View Post
Just to be clear chalugadp , you mentioned that at high vol everything was ok ,... it was at low vol that the amp overheats , so the amp was controlling the fan speed ? If so,.. does your new fan go from low to high speed also??
My new fan is one speed. My living room is hot in summer. If you have a home theater in the bassment then noctua fine. I also have a parasound amp in the av rack and it throws a lot of heat. I'm in a situation where I need more cooling then average .
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Old 09-15-2014, 07:52 PM
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Quote:
Originally Posted by chalugadp View Post
My new fan is one speed. My living room is hot in summer. If you have a home theater in the bassment then noctua fine. I also have a parasound amp in the av rack and it throws a lot of heat. I'm in a situation where I need more cooling then average .
You mentioned that at high vol everything was fine with the Noctua

...What im trying to get at is,... that if your noctua fans were wired to just (one speed ,.. top speed) , like when you were at High Vol and everything was fine ,.. then they would also be fine at low vol no??
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Old 09-15-2014, 08:12 PM
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I have the noctuas on my 6000 with around a month of usage and haven't triggered any thermal protection circuit. The fans only have 2 wires and seem to run at max speed all the time. They are definitely dead silent.

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Old 09-15-2014, 08:25 PM
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Quote:
Originally Posted by randyc1 View Post
You mentioned that at high vol everything was fine with the Noctua

...What im trying to get at is,... that if your noctua fans were wired to just (one speed ,.. top speed) , like when you were at High Vol and everything was fine ,.. then they would also be fine at low vol no??
The high fan only kicks in at super high volume . So listening at -10 db's the fan was low.

Again my rack is warm and needs constant cfm of 32 or more.
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Old 09-15-2014, 09:37 PM
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I use the NoiseBlocker brand all the time in liquid cooled computer builds in the larger size, love them even more than Noctua. In fact I have 5 of the 120mm model within 2ft of my head on my desk at all times. You can also choose by rpm/cfm. Check out the S1, S2, or S3 on this page:

http://www.frozencpu.com/cat/l3/g/c1...ml?id=3ZQwyCHr
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Old 09-15-2014, 09:38 PM
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I have two Nexus 80mm Real Silent Case Fans in each of my iNuke 6000 DSP's. They have been running about a year without any problems at all.
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Old 09-15-2014, 10:59 PM
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Quote:
Originally Posted by chalugadp View Post
If you have a home theater in the bassment then noctua fine.

LOL..... no it's not, I think we proved that in my basement this summer!...lol

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