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Post by Darren on Apr 21, 2006 6:58:33 GMT -7
I received my quiet fan for my EP1500 yesterday and went to work. Here is the solution I came up with for keeping the original fan pristine in case I need to put it back in for a non-fan related warranty claim. I bought the following fan for a replacement: Panaflo FBA08A24L1A, 24V, 80x25.5, 21dB Digikey P/N P9739-ND, $8.25 The original fan removed from the case  I noticed the connector for the original fan resembled the connectors on one of my old computer power supplies  Here is a close up of the similar connector. It has more leads but we'll be clipping those to fit.  Here I am clipping the connector down to size, it should have two leads for our purposes.  After clipping the connector down, I sanded the rough edge a bit and sanded all sides sligtly to scale it down just a tad. Here is what it looks like after about 30 seconds of sanding to get it to rough dimensions. The original is on the left and the modified connector is on the right. This is before I sanded the tip down a bit to allow better contact with the receptacle. The on board receptacle leads are shorter than those intended for this connector so I just sanded the tip of the connector down about 3/32 for good contact.  Next we solder the modified connector to the new quiet fan leads. Be sure to put the heat shrink in place before soldering or you'll be doing it again.  Slide the heat shrink down and hit it with your lighter, heat gun, etc..  Plug it in and test it out! I've noticed the connection might need the hot glue put back to keep it from jiggling but it is fairly solid. I haven't tried to see if I can buy the exact connector for the board, I imagine it would be difficult to identify on-line so this is my current solution until I find a better way. Seems good enough though!  |
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Post by chrisbee on Apr 21, 2006 12:37:31 GMT -7
Nice pictures!
How would you compare the loudness of your new fan with the old?
How far away do you have to be before you can't hear it at all?
The original Behringer fans are LOUD in a quiet indoor environment!
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Post by Darren on Apr 21, 2006 12:56:58 GMT -7
Nice pictures! How would you compare the loudness of your new fan with the old? How far away do you have to be before you can't hear it at all? The original Behringer fans are LOUD in a quiet indoor environment! Thanks! I'd rate the new fan as SILENT!  You can hear it when sitting right on top of the amp and peeking over it but when the amp is on the rack and you are right in front of it you have to strain at 2' to hear it. It is really a great mod. |
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Post by chrisbee on Apr 21, 2006 13:03:42 GMT -7
It sounds well worth while.
I swapped to fans on my computer but that never sounded as loud as the EP2500 to start with.
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Post by formica on May 10, 2006 12:07:54 GMT -7
I received my quiet fan for my EP1500 yesterday and went to work. Here is the solution I came up with for keeping the original fan prestine in case I need to put it back in for a non-fan related warranty claim. I bought the following fan for a replacement: Panaflo FBA08A24L1A, 24V, 80x25.5, 21dB Digikey P/N P9739-ND, $8.25 I didn't realise the Behringers also used a 24V fan like the QSC's... guess my quiet fan upgrade applies here too... www3.sympatico.ca/bonaz/JBL/Quiet-fan-upgrade/Quiet-Fan.htmROb |
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Post by Darren on May 10, 2006 12:11:39 GMT -7
The EP1500 fan didn't come with a mini-molex connector on the fan end, it was soldered on mine  Sweet deal for your replacement though! |
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Post by howburger on May 17, 2006 17:25:26 GMT -7
I just replaced the fan in my EP2500 today with the Panaflo FBA08A24L1A. It really does make the amp pretty close to silent. What a great mod! I just snipped and soldered, as my amp is now one year old. Thanks for this and prior posts with info on which fans you used. I was going to use the Papst 8414NGL, which is supposed to be 12 decibels, but I couldn't find any place online that had them that would take any less than a $50 minimum purchase. Now, if I could just get rid of the hum from my IB that is ultimately coming from the interconnect from my Rotel RSP1068 processor to my BFD and EP2500. One thing at a time, I guess. Harold |
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Post by Darren on May 18, 2006 10:53:48 GMT -7
Sweet, I got the fan recommendations from another thread and just applied my own install technique...just trying to keep it within warranty basically. Glad it worked out for you.
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Post by chrisbee on Jul 30, 2006 5:50:32 GMT -7
Help?
The Panaflo is unavailable in Denmark except in 100 unit lots.
A UK online dealer tells me they are out of stock and out of production. They recomended an RB fan but I have no way to judge whether this is better or worse than the FB model. It seems silly to buy from another country if it's not even what I need.
Can anyone recommend an alternative, quiet, 24 Volt 80 x 25mm fan that might be available locally?
I have no idea what's good and what's not. They all look much the same to me. Some computer fans start off quiet but seem to get much noisier over time.
Thanks
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ken
Full Member
Posts: 187
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Post by ken on Jul 30, 2006 6:26:55 GMT -7
l was told by a electrical supplier over here that you can run a 12v fan instead of a 24v just have to get the resistance worked out to suit............l have'nt bothered looking into it as he had a quiter 24v fan in stock at the time ( last one )......hope this is correct ....cheers Ken
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Post by chrisbee on Jul 30, 2006 10:08:56 GMT -7
Thanks for the idea Ken.
I have now been recommended an EBM Papst.
Edit: I have a local Papst dealer!
Peace and quiet looms!
I may even be able to hear the IB above the fan noise! ;D
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eggi
New Member
Posts: 15
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Post by eggi on Jul 31, 2006 0:27:14 GMT -7
I also have a amplifier that have 2 noisy fans and would like to replace them with some more silent.
These fans are rated at 24v and 4.8w, would a computer fan that is 12v and 1.5w move enough air?
I also was thinking to make a simple thermo control for the fans, would it work to put a NTC thermistor on the heatsink and attach it in series with the fan(s)?
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Post by chrisbee on Aug 9, 2006 15:24:03 GMT -7
Here's a link to a site with some very clear images. The plug shown is exactly the same as on my EP2500 fan and comes apart exactly like this one. I failed to obtain a Panaflo so I bought a 24 Volt Papst 8414 NGL online with a claimed noise level of 12dB. It arrived bare-wired so tomorrow I'm going looking for a plug. If I can't find a matching plug I'll ask nicely for a scrap fan at the computer shop. I can cut off the lead and plug to give me something to connect my new fan to the Behringer. With most of my 2 year guarantee still lying in the future I don't want to do anything obvious under the Behringer's hood. www.silentpcreview.com/article83-page1.html |
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Post by chrisbee on Aug 13, 2006 3:17:53 GMT -7
The Papst 8414 NGL is silent except for a slight metallic ticking sound.
It doesn't produce nearly as much of a draught as the original fan.
I'm monitoring the EP2500 heatsink with a digital thermometer.
After three hours of film watching last night the heatsink was only 3F above ambient and followed the background temperature fall in the IB enclosure as the evening drew on. Today it is 4F above ambient playing music at a steady ~80dB. Eagles and Steely Dan.
For domestic use in an IB I don't believe a normally exposed EP2500 needs any more draught than this much quieter fan offers. In an enclosed rack/cabinet situation, at very high ambient temperatures, who knows?
I'll continue to monitor the heatsink temperature with music and films. It looks as if the EP's massive heatsinking is more than adequate for IB use with just a gentle airflow.
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jynx
New Member
Posts: 2
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Post by jynx on Aug 21, 2006 12:43:36 GMT -7
Has anybody just tried running the amp with the fan off?
I've been running three Crown amps (2 402's and 1 202) for over a year now and have never had a heat problem with the the fan wire's cut.
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Post by soho54 on Aug 30, 2006 14:08:30 GMT -7
I run my EP1500's with the fan disconnected. I listen at low levels though. If I listened at +85db levels I would have the fan modded and running. Just for peace of mind. I'm normally around 65db, and the case is always cool to the touch. I have tested at 85db levels and after 3 hours the case was warm to the touch, but nowhere near as hot as my Yami AVR.
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Post by chrisbee on Sept 4, 2006 15:20:25 GMT -7
I presume the EP1500 has a similar tubular, internally-finned heatsink to the EP2500 running from front to back.
Logic suggests that if one were to set the amp vertically then a chimney effect would help keep it cool. The removal of the filter pad might help here. Though this might make high voltages accessible to prying metal knitting needles or cutlery in the hands of innocents.
The gentle flow from a quiet fan seems to be all that is necessary for loud films or music in a domestic system. The margin of safety may be rather higher with a fan than any induced chimney effect.
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ginmtb
Junior Member
Posts: 74
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Post by ginmtb on Sept 10, 2006 23:18:50 GMT -7
I did this mod - I removed the hot glue and pulled the entire connector assembly (both male and female parts) off the board. I then used a 3-pin connector from a fan in an old pc - I simply removed the wire of that 3rd pin and set the male piece on the two pins sticking up (without the female part that mounted onto the board). I may do some hot glue on there just to make sure it stays (but it seems pretty firmly attached).
Thanks for the mod!!!
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