NU3000 and EP4000 fan mod notes - Page 2 - AVS Forum
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post #31 of 50 Old 03-11-2013, 11:34 AM
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for a couple bucks more why not get a fan designed to be quiet?

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post #32 of 50 Old 03-11-2013, 12:03 PM
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Quote:
Originally Posted by noah katz View Post

for a couple bucks more why not get a fan designed to be quiet?

I like the Noctua fans but they are 2-3x more money than a lot of decent fans (like Scythe) and tend to move less air for the same fan speed as the more traditional fan blade designs.
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post #33 of 50 Old 03-11-2013, 07:39 PM
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Quote:
Originally Posted by noah katz View Post

for a couple bucks more why not get a fan designed to be quiet?

such as?
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post #34 of 50 Old 03-13-2013, 03:24 PM
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Originally Posted by ratm View Post

such as?

http://www.newegg.com/Product/Product.aspx?Item=N82E16835226033

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post #35 of 50 Old 03-13-2013, 04:24 PM
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Thank you very much! While quiet, it does spin slower and push less air than others I've looked at. I will rarely, if ever, push my amp to the point of reference (with the Cap) so will that be a big deal?
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post #36 of 50 Old 03-13-2013, 04:34 PM
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That is a 12 volt fan. The ep4000 has a 24 volt fan in it.
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post #37 of 50 Old 03-13-2013, 06:30 PM
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Quote:
Originally Posted by ASU View Post

That is a 12 volt fan. The ep4000 has a 24 volt fan in it.

well then crap. That sucks. Back to the drawing board....
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post #38 of 50 Old 03-13-2013, 06:49 PM
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Quote:
Originally Posted by ratm View Post

well then crap. That sucks. Back to the drawing board....

Here try this one- http://www.digikey.com/product-detail/en/3110SB-05W-B20-E00/P14751-ND/2615564
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post #39 of 50 Old 03-13-2013, 07:09 PM
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I saw that one, but its back ordered until mid May. This one is available in 2 weeks, should work right?
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post #40 of 50 Old 03-13-2013, 09:17 PM
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Quote:
Originally Posted by ratm View Post

I saw that one, but its back ordered until mid May. This one is available in 2 weeks, should work right?

Link doesn't work
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post #41 of 50 Old 03-14-2013, 04:33 PM
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Just finished my Noctua fan mod for my EPX 4000 and both fans start up no problem with the "ultra low noise" resistor connected, hope this air flow should be adequate , definitely better than nothing! (see http://www.avsforum.com/t/1462687/behringer-epx-4000-fan-replacement-mod-even-necessary)
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post #42 of 50 Old 03-14-2013, 05:47 PM
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I hate that hyperlink doesnt work with digi-key
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post #43 of 50 Old 03-14-2013, 09:00 PM
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Quote:
Originally Posted by ratm View Post

Thank you very much! While quiet, it does spin slower and push less air than others I've looked at. I will rarely, if ever, push my amp to the point of reference (with the Cap) so will that be a big deal?

Right, not an issue for home use unless you run at club levels.
Quote:
Originally Posted by ASU View Post

That is a 12 volt fan. The ep4000 has a 24 volt fan in it.
Quote:
Originally Posted by ratm View Post

well then crap. That sucks. Back to the drawing board....

No biggie.

Put a resistor in series to bring the voltage down.

If you want to tune it, buy 10 with 10X the needed resistance (calculate effective resistance from fan voltage and current or power), and parallel them, adjusting the number you use.

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post #44 of 50 Old 03-15-2013, 02:38 AM
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Quote:
Originally Posted by noah katz View Post


If you want to tune it, buy 10 with 10X the needed resistance (calculate effective resistance from fan voltage and current or power), and parallel them, adjusting the number you use.

Cool trick with the resistors in parallel!
So if I put two, the total resistance is 1/2 of the resistor value
If I put 3, the total is 1/3
Put 4, then it's 1/4
etc..

Pretty neat trick!

Plus doesn't that also help with heat dissipation since the current would be split between each resistors?
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post #45 of 50 Old 03-15-2013, 02:45 AM
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Quote:
Originally Posted by curtisG View Post

Plus doesn't that also help with heat dissipation since the current would be split between each resistors?
Yes. P = I^2.R
PS: But you need to keep them separated if dissipating a significant percentage (>1/3) of their rating so they don't heat each other up. A resistor body diameter or more so air can move around them.
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post #46 of 50 Old 11-27-2013, 09:33 AM
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I think I will try to squeeze in 2 Noctua fans - one at each end of the heatsink of each of my EP4000:s - and connect them in series for 24v.
I think that ought to give me excellent airflow at extremely low noise levels.

Will it fit...
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post #47 of 50 Old 03-31-2014, 03:50 AM
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Quote:

Ressing an old thread for you guys out there with Inukes and ep4000's

This fan quoted above just came back in stock, probably one of the better options for 24v fans for the Ep4000.

I'm ordering one now, and for those with Inukes that take 12volt fans, I found this.

http://www.computers-canada.ca/store/products/1027019339/AFACO-08000-GBA01/Arctic%20Cooling/

It's got one of the highest CFM / DBA i've seen on almost any 80mm fan, and it's only $2.50!
I'm sure you guys in the states can find them just as cheap.

Cheers!
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post #48 of 50 Old 04-05-2014, 06:53 PM
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Quote:
Originally Posted by Thatsnasty View Post

Ressing an old thread for you guys out there with Inukes and ep4000's

This fan quoted above just came back in stock, probably one of the better options for 24v fans for the Ep4000.

I'm ordering one now, and for those with Inukes that take 12volt fans, I found this.

http://www.computers-canada.ca/store/products/1027019339/AFACO-08000-GBA01/Arctic%20Cooling/

It's got one of the highest CFM / DBA i've seen on almost any 80mm fan, and it's only $2.50!
I'm sure you guys in the states can find them just as cheap.

Cheers!
Thanks for the heads up about the fan being back in stock.
Ordered it a few days ago, and it came in today.
Did the swap (took about 15 minutes), and WOW! Night and day difference.
I can barely hear the amp fan now..

Best mod ever IMHO

Thanks!
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post #49 of 50 Old 04-05-2014, 07:17 PM
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post #50 of 50 Old 04-07-2014, 11:00 PM
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Quote:
Originally Posted by Mrkazador View Post

Here is the fan connector and pin for the EP4000 so you don't have to cut the original fan.

http://www.digikey.com/product-search/en?x=0&y=0&lang=en&site=us&KeyWords=455-2266-ND
http://www.digikey.com/product-detail/en/SXH-001T-P0.6/455-1135-1-ND/527370

Thanks for the link! a bit late for me though, haha.
I doubt ill be using the stock fan anyways, and if so I can always solder some more wire to it.
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Behringer Nu3000 Inuke Ultra Lightweight High Density 3000 Watt Power Amplifier , Behringer Europower Ep4000 Professional Amplifier
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