In my experience with powered Behringer mixers this is just the way they are. To be safe check your speaker impedance is not less than 4 ohms per channel & if you are using one 8 ohm speaker per channel this can make the situation worse. Take a look at the LED meters & keep them out of the red :-) If your speakers are 8 ohms connect them both to one channel only & see if that helps (this will make a 4 ohm load & give max power from one amp & the meter should reflect the sound level)
Where do you have the gain control set on the Mic channel ?
If you have no issues with either the speakers or the Mic, and the gain control for the channel you have the Mic plugged into is set at a somewhat "normal" position, you might have a problem with the mixer itself.
SOURCE: how do i get the effects to work? cant seem to get
You have to select an effect, push down the selector knob to lock it in. You have to send signal to the effect by turning up the effect in the "strip" above the slider. You have to turn up the effect sent to the main below the effect window, and finally use the effect slider to control the amount of effect. There may also be a button to toggle the effect on and off near the effect number window.
SOURCE: Behringer PMP5000. The Powered Output B dead
Make sure the three position slide switch is set correctly for the stereo usage, that is NOT the bridged OR the Mon mode.
MAKE SURE the pan pots are set to middle as they control the spit of the audio to the two channels.
This is a class "D" amplifier (switching) and there really isn't any fuse for a single channel.
MAKE SURE your speakon connections are good by swapping your speaker cables.
I repaired my unit and had to do that without schematics... Behringer will not give them out. Mine had a severe arc-over on one side power amp taking out about ten transistors and diodes and one swithcing regulator chip. Had to cut out the "cancer" of the burned board.
This unit uses a complementary output stage that is made up of one transistor on one side and a pair in parallel on the other. This drives the inductor/capacitor filter... I think the switching frequency is between 100KHz and 1 MHz as I recall. All those transistors were gonzo. It also fried the main power switching transistors in the power supply, several smaller transistors, diodes, and the switching regulator chip.
Also two 10 ohm power resistors were fried. They soft start this unit by charging the main caps via two resistors that limit the inrush current.
A small switching supply has to come up first before the main supply which sends the DC to the amp section.
SOURCE: brand new mixer pmp3000 and two brand new speakers
Make sure the slider switch is set to the correct mode.
The TRIM controls must be advanced while the sliders are at 70%.
A common problem is to MISTAKENLY plug 1/3 inch input cable into the Effects Insert jacks instead of the inout IF you use 1.4 instead of XLR inout.
Make sure the channels of interest are NOT muted!
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SOURCE: I have a behringer xenyx 2442 and the main output
The utput fader has probably been broken. If the knob takes a hit, it breaks the resistance element. The part is inexpensive but it takes a lot of work to access and replace the part.
SOURCE: Using Behringer PMP3000 to power monitors??
The power amp INSERT's are NOT intended to be used as inputs for the power amp but are for external effects units. The TIP of the jack plugged in here receives the signal from the preamp section and the inout of the power amp is taken from the RING of this threee conductor jack. If you want to use one of the power amps to run monitor speakers with no less than 4 ohms combine, you can use the built in Mon mode without any additional cables. You will set the mono/mon positon (center) and use the mo1 slider to control the output from the amp side for the mon speakers. The other amp then is used for the main speakers.
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