NU3000 and EP4000 fan mod notes - Page 2 - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
 2Likes
 
Thread Tools
Old 03-11-2013, 11:34 AM
AVS Forum Addicted Member
 
noah katz's Avatar
 
Join Date: Apr 1999
Location: Mountain View, CA USA
Posts: 21,436
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 1004 Post(s)
Liked: 342
for a couple bucks more why not get a fan designed to be quiet?

Noah
noah katz is offline  
Sponsored Links
Advertisement
 
Old 03-11-2013, 12:03 PM
Advanced Member
 
djkest's Avatar
 
Join Date: Nov 2007
Location: Colorado Springs, CO
Posts: 743
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 26 Post(s)
Liked: 40
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.
djkest is offline  
Old 03-11-2013, 07:39 PM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Posts: 1,592
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 39 Post(s)
Liked: 39
Quote:
Originally Posted by noah katz View Post

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

such as?
ratm is offline  
 
Old 03-13-2013, 03:24 PM
AVS Forum Addicted Member
 
noah katz's Avatar
 
Join Date: Apr 1999
Location: Mountain View, CA USA
Posts: 21,436
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 1004 Post(s)
Liked: 342
Quote:
Originally Posted by ratm View Post

such as?

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

Noah
noah katz is offline  
Old 03-13-2013, 04:24 PM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Posts: 1,592
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 39 Post(s)
Liked: 39

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?
ratm is offline  
Old 03-13-2013, 04:34 PM
ASU
Member
 
ASU's Avatar
 
Join Date: Apr 2009
Posts: 60
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
That is a 12 volt fan. The ep4000 has a 24 volt fan in it.
ASU is offline  
Old 03-13-2013, 06:30 PM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Posts: 1,592
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 39 Post(s)
Liked: 39
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....
ratm is offline  
Old 03-13-2013, 06:49 PM
ASU
Member
 
ASU's Avatar
 
Join Date: Apr 2009
Posts: 60
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
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
ASU is offline  
Old 03-13-2013, 07:09 PM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Posts: 1,592
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 39 Post(s)
Liked: 39
I saw that one, but its back ordered until mid May. This one is available in 2 weeks, should work right?
ratm is offline  
Old 03-13-2013, 09:17 PM
ASU
Member
 
ASU's Avatar
 
Join Date: Apr 2009
Posts: 60
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
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
ASU is offline  
Old 03-14-2013, 04:33 PM
Member
 
dece870717's Avatar
 
Join Date: Sep 2010
Posts: 77
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Liked: 12
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)
dece870717 is offline  
Old 03-14-2013, 05:47 PM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Posts: 1,592
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 39 Post(s)
Liked: 39
I hate that hyperlink doesnt work with digi-key
ratm is offline  
Old 03-14-2013, 09:00 PM
AVS Forum Addicted Member
 
noah katz's Avatar
 
Join Date: Apr 1999
Location: Mountain View, CA USA
Posts: 21,436
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 1004 Post(s)
Liked: 342
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.

Noah
noah katz is offline  
Old 03-15-2013, 02:38 AM
Advanced Member
 
curtisG's Avatar
 
Join Date: Sep 2003
Location: Great Falls, VA
Posts: 801
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 13
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?
curtisG is offline  
Old 03-15-2013, 02:45 AM
AVS Forum Special Member
 
A9X-308's Avatar
 
Join Date: Mar 2008
Location: Australia
Posts: 7,874
Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
Quoted: 1506 Post(s)
Liked: 1133
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.

“You are not special. You are not a beautiful and unique snowflake.” Chuck Palahniuk
A9X-308 is offline  
Old 11-27-2013, 09:33 AM
Member
 
tobcar's Avatar
 
Join Date: Mar 2013
Posts: 58
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
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...
tobcar is offline  
Old 03-31-2014, 03:50 AM
Advanced Member
 
Thatsnasty's Avatar
 
Join Date: Nov 2008
Location: Niagara Falls, Ontario
Posts: 577
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 51 Post(s)
Liked: 44
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!
Thatsnasty is offline  
Old 04-05-2014, 06:53 PM
Advanced Member
 
curtisG's Avatar
 
Join Date: Sep 2003
Location: Great Falls, VA
Posts: 801
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 13
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!
curtisG is offline  
Old 04-05-2014, 07:17 PM
AVS Forum Special Member
 
Mrkazador's Avatar
 
Join Date: Jun 2005
Posts: 4,262
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 262 Post(s)
Liked: 389

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

Boxozaxu likes this.

_______________________________

DIY Sound Group: Information and Tips
Mrkazador is offline  
Old 04-07-2014, 11:00 PM
Advanced Member
 
Thatsnasty's Avatar
 
Join Date: Nov 2008
Location: Niagara Falls, Ontario
Posts: 577
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 51 Post(s)
Liked: 44
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.
Thatsnasty is offline  
Old 11-17-2014, 07:21 PM
AVS Forum Special Member
 
Augerhandle's Avatar
 
Join Date: Jan 2009
Location: About 25" away from my computer screen
Posts: 4,420
Mentioned: 17 Post(s)
Tagged: 0 Thread(s)
Quoted: 823 Post(s)
Liked: 737
According to the manual (http://www.behringer.com/assets/NU60...00DSP_M_EN.pdf), the fan is supposed to be variable speed. I've not heard this mentioned in the forums. Can anyone with a NU3000DSP verify this?

Thanks

"The wise understand by themselves; fools follow the reports of others"-Tibetan Proverb
_____________________ http://www.scientificamerican.com/article/auger-handle/ ____________________________
Augerhandle is offline  
Old 11-17-2014, 09:40 PM
AVS Forum Special Member
 
notnyt's Avatar
 
Join Date: Dec 2008
Location: Long Island, NY
Posts: 8,361
Mentioned: 199 Post(s)
Tagged: 0 Thread(s)
Quoted: 2546 Post(s)
Liked: 2307
Pretty sure it uses pwm to control the speed, at least in the inukes. I'm running a noctua fan in mine, no issues
notnyt is offline  
Old 03-02-2015, 07:20 PM
AVS Forum Special Member
 
NODES's Avatar
 
Join Date: Sep 2007
Posts: 1,905
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 653 Post(s)
Liked: 273
No need for a PWM fan, it will just run at a constant high speed (depending on your fans specs)

Who needs 4K?... just go see your optometrist.
NODES is offline  
Old 04-21-2015, 12:15 PM
Newbie
 
Join Date: Apr 2015
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 0
Did the Noctua fan mod with the ultra low noise work in the longtime?
Simp_the_pimP is offline  
Old 12-05-2016, 11:56 PM
Advanced Member
 
JonasHansen's Avatar
 
Join Date: May 2008
Location: Denmark
Posts: 561
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 119 Post(s)
Liked: 45
Quote:
Originally Posted by maxcooper View Post

So, the Noctua NF-R8 with the "ultra low noise" resistor is another option for the EP4000 fan mod. I bet that it is quieter than the common alternatives, but it probably also flows less air.

-Max
Is this still running with no overheating?

Home Theater: JBL M2 & SUB18 powered by Crown and BSS.
JonasHansen is offline  
Old 12-06-2016, 08:07 AM - Thread Starter
AVS Forum Special Member
 
maxcooper's Avatar
 
Join Date: Jul 2003
Location: Silicon Valley, CA
Posts: 1,685
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 13 Post(s)
Liked: 28
Quote:
Originally Posted by JonasHansen View Post
Is this still running with no overheating?
It hasn't been hooked up for years, so I can't really verify. My system changed and I ended up not using it.

-Max
maxcooper is offline  
Old Today, 08:46 PM
Newbie
 
Join Date: May 2017
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 0
EP2000 & NU1000 - Noctua fan Mod

I thought I'd chime in on this, since these two amps are still very popular for Home Theater and being widely used.

I wanted the easiest route I could possibly take, so I came up with something slightly different than everyone else (though I do love the Noctua with spliced in LowNoiseAdapter to drop the voltage strategy, but it still requires splicing):

I simply took a 12v 80mm Noctua (I chose the Noctua NF-R8 redux-1200 for $9.95 on Amazon, which has 21 CFM at 1200rpm and 9.1 dB, versus the Digikey with 24 CFM at 2,000 RPM and 21 dB!), and I tucked the power wire under it and out the back, sandwiched in the opening. Everything fit back together perfectly, and I simply plugged the wire directly in through the back of my HTPC to a fan header. No splicing, no 24V issues, no special orders or issues with fans not being in stock.

(for those wondering though, the Noctua IS half of the Static Pressure of the Digikey - so if you were really running hot, like non-stop action movies, 3 in a row, then you might want a push-pull of Noctua, or get the Digikey and splice).

The amp is never on without the PC, as they're on a master/slave trigger surge bar, so no risk of the Amp being on without a fan turning.

The Noctua are insanely quiet, but I can still feel air coming out of the front on the NU1000, and I can hear the air blowing through the EP2000 tunnel. (I also touched up around the shroud in the EP2000, using furnace duct tape (the shiny stuff) to seal the gap around the edge between it and the HeatSink.

Hope that helps someone!
MJEJ is online now  
Sponsored Links
Advertisement
 
 

Tags
Behringer Nu3000 Inuke Ultra Lightweight High Density 3000 Watt Power Amplifier , Behringer Europower Ep4000 Professional Amplifier
Gear in this thread
Thread Tools


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off