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Re: Quieter fan mod for Behringer EP2500

what about this crazy idea ;)

Why not take take the top off the fanduct?
so the heat can go straight up
of course you have too cut some extra holes in the top cover
but at least its silent then :)
 

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Discussion Starter #44
Re: Quieter fan mod for Behringer EP2500

what about this crazy idea ;)

Why not take take the top off the fanduct?
so the heat can go straight up
of course you have too cut some extra holes in the top cover
but at least its silent then :)
The top cover is already in close contact and screwed to the heatsink.
Limited conduction will take place but I can't recommend this as the only means of cooling.

A tall chimney would be a better idea than drilling holes in the top plate of your amp. Not only would this drilling invalidate the guarantee but will make the amp dangerous to children probing your new ventilation holes. Unless you were very careful it will probably be so ugly you could never sell the amp if you needed to.
 

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Re: Quieter fan mod for Behringer EP2500

This fan mod is very much worth it. Took 10 mins and reduced the fan noise dramatically!
 
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Re: Quieter fan mod for Behringer EP2500

Hi, l've got a electronics mate installing a thermal switch in my ep2500 tommorow to turn the fan on&off .......it is adjustable too , so we'll start with 35 degrees celcius and go from there, if this does'nt do what l want l'll hunt up an even quiter fan as the one l got isnt quite enough for me.

l'll get some pics happening of the instal too :)

Ken
 
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Re: Quieter fan mod for Behringer EP2500

I have the ep 2500 and its a little loud but IMO my ps3 is louder.. So i can live with the little noise it produces. I have heard of people just disconnecting their fan from other pro audio amps, but I wouldn't recommend it.
 

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Re: Quieter fan mod for Behringer EP2500

Hi, l've got a electronics mate installing a thermal switch in my ep2500 tommorow to turn the fan on&off .......it is adjustable too , so we'll start with 35 degrees celcius and go from there, if this does'nt do what l want l'll hunt up an even quiter fan as the one l got isnt quite enough for me.

l'll get some pics happening of the instal too :)

Ken
Yeah, get some pics if you can. What I ended up using was two of these fans.
http://www.enermaxusa.com/catalog/product_info.php?cPath=28_30&products_id=102
They flow the same amount of air as the one from Newerk.com, but are only 14db compared to the 24v fan's 21db.

I'm thinking of replacing the OEM fan, but using it as an exhaust instead of an intake, and then a second (wired in series for that 24v rating) at the front of the heat sink to blow fresh air through it from the front of the amp. 20bucks is a fair chunk of change to spend on something like this though.

*edit* I've been a member for 1 year and this was my first post. Huh. Oh well...

*edit #2*
I have both fans installed...sorta. I was unable to place the second fan infront of the heatsink without grinding away part of the amps front plate. I still have yet to find a good place to put the second fan. I may place it with my exhaust fan in the back inside that shrowd. We'll see if that works. It is very quiet though I will say!

*edit #3*
Well, I have both fans piggy backed in the existing fan location, but both blow out instead of in. The air flow is lower than with the original fan, but even playing for 20-30mins with the clip lights blinking occasionally, the amp never gets hot. The air coming out is warm, but it doesn't get near as hot as my receiver does!
 

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Re: Quieter fan mod for Behringer EP2500

If you're doing that make sure the air still flows in the same direction as before, some heatsinks work best with a positive negative pressure differential.
 

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Re: Quieter fan mod for Behringer EP2500

just do the single fan and it will be fine. On a 90 dregree day i watched Return of the king and the amp never kicked out or had any problems at all, even though it was quite hot.

it will be fine.
 

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Re: Quieter fan mod for Behringer EP2500

After several months with that awful loud noise from my EP2500 I finally got a new fan in the mail! A Papst 8414 NGML (19dB). I just cut the wire on the old one, and used some electrical tape to connect the wires on the new fan. The result? Around 62dB right next to the EP2500.. but my listening position(s) is 4 meters away from the EP2500 - so you don't notice any noise while listening to music or watching movies. Great mod :)
 

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Re: Quieter fan mod for Behringer EP2500

Is there a definitive list of part numbers to check? The Newark one doesn't list the noise level for that model.

Edit: the NMB P/N is the same as the 21dB Panaflow. Guess they're the same company.
 

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Re: Quieter fan mod for Behringer EP2500

Just finished the fan mod. At least on my amp it was easier to cut the wires near the fan and solder the new fan wires to them. All you have to do is cut the black shield back and slit between the red and black to separate them.

Trying to use an exacto with that much hot glue would have taken a lot longer.
 

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Re: Quieter fan mod for Behringer EP2500

Only took me about 30 seconds to cut through the glue and disconnect it. I'm using an Vastech Alien I.
 

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Re: Quieter fan mod for Behringer EP2500

I just did the mod using a fan bought from Newark. Awesome. Verrrrry quiet now. Be careful about that fan shroud because it isn't correct in Chris' original photos, but someone's follow is correct.
 

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Discussion Starter #60
Re: Quieter fan mod for Behringer EP2500

I'm glad somebody else has noticed the "deliberate" mistake. ;)
 
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