Behringer EP2500 Amplifier

[Trunker]

Hi,

 

Don't know if anyone else has had this problem or know something about it. I was doing a disco last night using a Behringer EP2500 Amplifier. For some reason the sound just cut off, but when I played about with the XLR plug going into the amp the sound came back on. It seems like it is the connection on the amp. Has anyone experienced this? Are the connections on the amp not very good?

 

Thoughts or problem solving anyone?

 

Cheers

[Girlyboy]

Hello

 

Give us a bit more information - how long had the amp been on? How hard have you been driving it? What is it running speaker wise (subs, tops)?

 

As the inputs are chasis mount and soldered directly onto a circuit board, it sounds more likely to me that the problem might be the XLR cable, rather than the input.

Another likely cause might be that if the amp wasn't well ventilated, it may actually have been the thermal cut-out protection kicking in, and it was coincidence that you were playing with the XLR's when it came back on?

 

 

Simon

[Rob_Beech]

I have to agree with Simon.

 

I don't have many EP2500's left in hire stock as I'm slowly going for lighter weight amps. But I haven't had this issue you are talking about.

I would put it down to a lead or thermal cutout. Remember, that as the sound is cut out, it gives the amp time to cool down. By the time you've finished swearing and got to the back of the amp to have a play it may well be cool enough to cut back in. Did the amp do this again or was it a one off?

 

*Try a different lead

*Make use of the High Pass Filters,

*The red light is not your friend.

 

 

Rob

[bruce]

I'd agree that the first thing to check would be the XLR connectors on the leads, as they are probably more easily damaged.

 

However, if the XLR chassis mount connectors are directly soldered to the PCB, it's possible that the sockets could take a knock while an XLR plug is inserted, causing an intermittent break where the chassis-mount socket is soldered to the PCB. In that respect, chassis-mounting sockets soldered to the pcb via wires are generally more reliable, as there is no mechanical stress on the soldered joint.

 

But check the cables first.

[Trunker]

Hi guys and thanks for your replys. The amp had been on about 1hr 40mins when it first cut out. The XLR leads are brand new (been used 3 times) and the stuff is set up and never moved (resident disco). The amp is driving 1 x 18" bass bin and 1 x 12" top per channel, so 4 speakers in all @ 4 ohms per channel. There is a wall about 7-8 inches behind the back of the amp though. The amp was not clipping. The LED's on the mixer were reading -8dB.

 

The amp cut out 3 times during the night. Hope this sheds a bit more light.

[Rob_Beech]

the level on the desk doesn't really make much difference, generally speaking.

 

Check that the fans are working properly and there is not too much dust. Often amps that sit in the same place gather more dust than those which are transported to and from places, I'll assume the reason being that the dust and muck inside the things are bumped around a bit keeping them free to be blown out by the fans. or something like that.

 

You aren't going to hurt anything by taking the lid off and cleaning inside.

 

Rob