I was having a great time playing the NIN Blu-ray last night while I was working around the house. I played it pretty loud for about 30-40 minutes. I turned off everything but the EP2500 and sat down for dinner with my wife. Every 5-10 minutes or so, we would hear a faint "bump" noise. I thought it was my neighbor working on something. Then after about 30 minutes of this "bump" sound, I realized it was my EP2500 flashing the clip light-which caused the sub to "bump." I went over to the amp and it was HOT:eek:!!! The fan was running and HOT air was blowing out almost 40 minutes after I was done playing music. I disconnected the line in cable and the speaker cable and just left the power cable plugged in. The amp would not cool off! I ended up having to unplug it so I could go to sleep without worry of a fire.

What is the deal? I just hooked it back up this morning, and it plays fine, and the "bump" noise is gone. Should I be sending it back to Behringer?

It sounds like you were pushing the amp quite hard for it to have overheated like that (which is what it did). Is the amp new? I assume it has adequate ventilation.

Amp is new, and is sitting out in the room on top of my sub.

Amp is new, and is sitting out in the room on top of my sub.

I'd keep an eye on it for sure. It could be defective possibly. It would make me very nervous knowing it did that though....

is this a new installation? i would check speakers wirring, have you modded the fan? does the amp have enough space in front and back to get enough air circulation? how the EP2500 is used on sub, full range? what is hot for you may not be so hot for someone else also:eek:

I have had it installed for a few months. Fan was modded. When I say HOT, I mean too hot to touch. I have an SMS-1 crossing it over and the amp is bridged to a single 8 ohm sub.

Ok so i would first try to put back the original fan in because if it doing it again you should get a replacement. You are using it bridged 8 ohms which is like 4 ohms per side so not working that hard IMO

I've had this happen once with mine as well. It happened a couple of months ago but was fine after turning it off for a couple of hours. In my case I wasn't pushing it that hard when it happened, I thought I must have had a short or something but I never messed with the wiring and it's been fine since. If it happens again I'll be getting a beefier fan for it. I'd just put the original back in but the fan in mine (used) is extra loud, I think the fan blades are rubbing on the casing or something...

I have had it installed for a few months. Fan was modded. When I say HOT, I mean too hot to touch. I have an SMS-1 crossing it over and the amp is bridged to a single 8 ohm sub.Did you reverse the fan as well? I did and I noticed that my filter in the front of the amp will get a little dirty. That is enough to make it hot enough to shut down.

-Robert

I have the fan pulling air from the front(reversed). I clean the filter with compressed air monthly. I have driven the amp harder and it NEVER got this hot.

Wow, put in the stock fan and then play that disk again. Keep an eye (hand) on it to make sure it doesn't get ridiculously hot again, but I think something is wrong with it. Your clip lights shouldn't be blinking and your sub poppin like that...internal yet intermittent short?

I modded my EP2500, but I used 2 quiet fans. I have yet to have a heat issue and it's also very quiet.

I have the fan pulling air from the front(reversed). I clean the filter with compressed air monthly. I have driven the amp harder and it NEVER got this hot.

I tried this scheme and my ep2500 overheated just like yours.

In theory it should cool better, drawing the air through the sink and out the back rather than blowing through the filter at the front.

In practice it doesn't draw properly and runs hot as a mofo.

You can probably keep the quieter fan but put it back to drawing air in from the back.

alright, so I played a 70min dubstep mix while washing my car yesterday. Because I was outside I had the volume up pretty loud. I did it to see just how hot MY amp would get with my modded fans because I've never felt it get very hot.

Well once the song was over, I came inside and went to feel how hot the air was coming out of the amp. I didn't really feel any, so I looked in and the fans weren't turning. I put my hand on top of the amp and was burned within seconds.

Somehow my fans shut off!

I shut off the amp then 5-10 min later came in and turned it back on. The fans spun up and out came the hot air. I left it on, exhausting the hot air for a while longer.

This one may be a tough one to diagnose.

My air flow is reversed, so the hot air blows accross the fans. The only thing I can think is the fans overheat and thermally shut down. The only way to rule that out is to play the track again at the same volume and see if the fans shut off again. If so, I can turn the fans around, play the track again at the same volume and see if they shut off or not.

I first have to figure out what makes them shut off so my test must be repeated to see if I get the same results. I'll see if I can do that later tonight.

I was having a great time playing the NIN Blu-ray last night while I was working around the house. I played it pretty loud for about 30-40 minutes. I turned off everything but the EP2500 and sat down for dinner with my wife. Every 5-10 minutes or so, we would hear a faint "bump" noise. I thought it was my neighbor working on something. Then after about 30 minutes of this "bump" sound, I realized it was my EP2500 flashing the clip light-which caused the sub to "bump." I went over to the amp and it was HOT:eek:!!! The fan was running and HOT air was blowing out almost 40 minutes after I was done playing music. I disconnected the line in cable and the speaker cable and just left the power cable plugged in. The amp would not cool off! I ended up having to unplug it so I could go to sleep without worry of a fire.

What is the deal? I just hooked it back up this morning, and it plays fine, and the "bump" noise is gone. Should I be sending it back to Behringer?

Hey Bud,
FYI, I had the same problem as you after playing a very base heavy cd in my theater room. I also have the fan mod and I was only clipping for around 30 seconds or so. Ever since now after running for around an hour, the bass to my sub just cuts out for 30 secs ever 2-3 minutes or so. I also have the fan "reversed" but I did it on accident and not on purpose. I am going to install it propery tonigh so it's pulling air into the unit. I'll post my results in a couple of days.

the fan speed sensor is usally located at the hot end of the heatsink.. if you have reversed the airflow it is now at the cold end and will only turn on the fan when the heat creeps to that end.. as soon as it does the fan cools off the senser almost immediately and shuts off the fan leaving the rest of the sink hot and the amp possibly going into thermal runaway.... turn your fan around and the problem should go away

the fan speed sensor is usally located at the hot end of the heatsink.. if you have reversed the airflow it is now at the cold end and will only turn on the fan when the heat creeps to that end.. as soon as it does the fan cools off the senser almost immediately and shuts off the fan leaving the rest of the sink hot and the amp possibly going into thermal runaway.... turn your fan around and the problem should go away

The EP2500 does not have a thermal sensor that turns the fan on and off. If the amp is on, the fan is on. That is why it turns on at startup and remains on constantly even if not using the amp (as in no signal). With your theory, the fan wouldn't turn on at start up and would remain off while not in use. Since that's not true, I swapped the fan that way it would be quiet while just sitting idle.

Some amps do have a fan speed sensor. Again, the EP2500 is not one of them.

Behringers ad copy claims vairiable speed fan.. so much for ad copy.. I dont own Behringer, but use Qsc rmx series, witch the Behringer appears to be a copy of. Qsc's fan idles quietly all the time the power is on, increasing if you hammer on it, and returning to idle within 5 minutes after

Behringers ad copy claims vairiable speed fan.. so much for ad copy.. I dont own Behringer, but use Qsc rmx series, witch the Behringer appears to be a copy of. Qsc's fan idles quietly all the time the power is on, increasing if you hammer on it, and returning to idle within 5 minutes after

Behringer has some ethically questionable business practices, so an incorrect claim in an ad won't surprise me.

I can get pictures of the inside of my amp if you need. First I need my fan-shut-down problem to be repeatable, which is posing to be difficult since it's currently in a different county, then I will tear it open, reverse the fans and try it again.