20 Most Recent Behringer EuroPower EP4000 2Channel Amplifier Questions & Answers

Use splitter cables to double your outputs. The signal strength will be half to each speaker per channel. i.e. if each channel has an output of 100w then splitter cables will give you 4 x 50w to connect up. Aim to use speakers rated below the max output rating of your amp, so in this example 4 x 40w speakers would be safer (won't blow your amp) than 4 x 60w speakers

Behringer... | Answered on Feb 18, 2018

I looked at a schematic for EP2500 which is same but has a lower buss voltage than the EP4000. Below, the drive signal to the power stage is full wave rectified to illuminate the LED, d-c is presented to the LED if R128 & R138 has an a-c return. There is a line that can push-up the a-c return. It goes off to a connector that is unknown. I suspect the push-up voltage is not there. It could mean anything. I think its coming from the main transformer, Check for blow fuses.

Also the speaker output is protected with a "Crowbar" circuit. It is simply a Triac device (light dimmer) or two SCRs to prevent d-c from shorted output devices being applied to the speakers. which would cook the speaker coils. This may be activated when amp is turned on. Then there is the possibility of the output power devices - one or more shorted.
The amp needs to be checked out by a repair technician.

Behringer... | Answered on Feb 05, 2016

If you have operated this amp normally before and it just started tripping the breaker and wont re-set, It will have to be checked by a technician to determine what is causing the overload ie shorted capacitor or some such.

Behringer... | Answered on Dec 22, 2014

What about the bias current? Most current amplifier, say within the last 15 years, do not have adjustable bias.

Behringer... | Answered on Dec 12, 2014

Will be no doubt the main power amp that has failed that is connected to that channel. It will be located on a big heat sink and be hotter than the other(s) channels if you go in after it's been on.

Behringer... | Answered on Jan 03, 2014

which breaker at the back

Behringer... | Answered on Aug 12, 2013

The rule of thumb is you control your audio on the low side. That means you plug your mics, tuners, audio sources into the pre-amp and then the pre-amp into the equalizer/mixer ant finally the mixer into the power amp and the amp into the "large honkin' speakers". The inter connects on the low side (between the source, the mixer and the power amp are usually done with RCA plugs. Use a good quality set of cables to get good tight connections and solid grounding.
heavy speaker wire sized to your SPEAKERS.

Behringer... | Answered on Sep 29, 2011

Alwaays use balanced lines. The amp will accept either XLR or TRS at that end. The Numark accepts 1/4 TRS. You should probably get TRS to TRS cables... While these look a lot like "stereo" 1/4 inch cablles they are NOT. Thesee need to be intended for balanced interconnection. They will be twisted pair within a shield. Here is an example:


Behringer... | Answered on Apr 26, 2011

You're amp is probably approaching thermal mode which causes the amp to overheat and eventually shut down or if it has a limiter built in this is due to distortion. You must lower your output volume.

Behringer... | Answered on Oct 05, 2010

Hi.. It sounds like one of the power supply rails ( + or - ) is not functioning. These run around 80-100V DC It will need service

Behringer... | Answered on Oct 04, 2010

I doubt that there is a problem with the unit. Usually people have problems with their cables or the speakon plugs themselves.
Unscrew the connector that is used on both ends and double-check their connections. Sometimes the screws that hold the heavy gauge wire in place, come loose. Also make sure that they are in the right places. Sometimes you have 4 connections. Make sure they are in +1 and -1 connections. Every once in a while you'll find a quirk unit that requires you to use +2 and -2 instead. Look at the back of the amp. It should tell you which numbers it uses. Make sure you check the same thing on the speaker end also. If you have a meter or continuity checker, use it to make sure it's wired right.
This is a professional piece of equipment. They don't go bad easily. Make sure you tighten those connections real good and that you pay close attention to the engraved numbers on the speakon connectors. (That is if they are quality connectors. The cheap ones may NOT tell you the numbering or the phase, ((+ or -)). Hint: The negative one is always closest to the outside of the plug. You'll have to study it to understand that. The screw terminals on the inside have 'walls' on both sides of it. Those are the + connections.
Also, check the switches on the front. You may have one of the switches in the wrong position or setting. Also if you're using phantom powered mics, you have to turn the phantom power on or else they will not work. Hope this helps.

Behringer Audio... | Answered on Oct 05, 2019

Do you have the mics and dongle system accessories? Your question does not state if you have them or not. If you do have these accessories, and you only want to use the wired option, remove the dongle so it stops searching for the microphones.

Hope this helps.

Behringer Audio... | Answered on Jun 27, 2019

Contact Behringer directly with your request.

Behringer Audio... | Answered on Jun 04, 2019

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