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We have a Ramsa 1200W power amp to run our monitors for our band. We split the channels to run two sets from the mixer board. the A channel is working great. The B channel is popping, cracking and surging. I have checked all the cables and even switched up the floor monitors to make sure it would not be a bad monitor. Is it possible for one side of the amp. to be going out? Or, could this be an issue with electricty? too much on one circuit?

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It is possible that you are overdriving that side or that there is a defective part on that side. Is the problem volume dependent or always there?

Dan

Posted on Sep 25, 2008

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6ya6ya
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Shud i get an external equaliser? i'm using MG166CX 16-Channel Mixer as the main mixer.


An external equalizer will not help this at all. The problem is likely within the amp (feeding the main speakers), the connections from the board to the amp, or the speakers themselves. In other words, the answer would be "NO." Best of luck!

Jan 14, 2013 | Music

1 Answer

Monitors not audible with Behringer 1680S


Assuming you're trying to power the monitors from this unit as well as the mains.....Confirm that the amp switch is in the middle position which splits the internal amps....one for main and one for monitors. Output A would power the monitors.... B would power the mains.

Aug 26, 2012 | Behringer PMP1680S Europower 10-Channel...

1 Answer

What is the actual watts per channel @ 8-ohms and 4-ohms on the Behringer PMP3000?


Those specs would be right - I have this same board but the amp was fried by a previous owner. I pulled the amp board out and tossed it and use the mixer now to drive an external amp. Great board. This amp is rated at 1200W "peak", bridged into an 8ohm load. That would equate to about 900W RMS bridged into 8ohm or 450 per side into 4ohm loads per side. You can't daisy chain all 4 speakers....impedance would be too low. You can run two of your 8ohm speakers per side - that results in a 4ohm load per side for the amp. That would give you amp delivery of 450W per side. Your speakers are rated to handle more than that so you're fine. For the record.....you could run one speaker per side no problem....just lower power output.

Aug 16, 2012 | Behringer Pmp3000 16 Channel Audio Mixer

1 Answer

I have a 1200watt amp that's only providing 300watt output with 8ohm Behringer B212 speakers. Is there a resolution and what would it be?


I'd need to know more about the amp, but don't forget, amps are rated as their max power...
So lets take a 300W/channel stereo amp at 8 ohms.
Ok, it's stereo, so there's 600W
But the amp is capable of 4 ohm loads...well, now you can deliver 600W/channel, for a total of 1200W
In this scenario, your amp is doing exactly what it was designed to do with those speakers.
If you wanted to get the full 1200W out of the amp, you'd have to hook up 2 more speakers in parallel to the ones already there. This drops the impedance to 4 ohms per channel = 600W / channel.
Yes, the power is split among the apeakers...300W per speaker into 4 speakers = 1200W
so any way you look at it, there's your 1200W

Feb 27, 2011 | Behringer B212 600watt, 2-Way PA Speaker

1 Answer

When I hook up my passive mains and monitors in the mono1/mono mode....mains on B and Monitors on A outputs I don't seem to have much output volume on the mains.....my monitors are okay but main sliders...


Please read my tip on fixya regarding a HAZARD of PMP mixers when using Speakon to 1/4 inch speaker cables. Essentially, the barrel of the 1/4 inch on A channel is the "hot" and one had better never let it touch a grounded point.

Now to your problem...You may have to run the MAIN sliders near the unity setting (zero Db).

It is important to set the trims correctely. For each of the inout channels, push the PFL button for the channel down and set the trim control so LED display is just below the clipping point at maximum input for the channel.

Ideally you would like the channel sliders to be in the vicinity of unity gain when system is balanced. Running the sliders way down results in a poor signal to noise ratio. Next you adjust the channel monitor knobs to set the monitor mix. These should be about 12 o'clock if possible to get decent signal to noise ratio.

For the MON/Mon1 mode, do NOT use the "Surround" simulator OR the "Speaker processor" ... make sure those swithces are off. You will probably want to PAN the channels fully to the MAIN side "B" which MAY be the reason your level seems low.

Remember the individual channels are about 400 Watts and 600 peak. Frankly myself I prefer to use both MAIN channels to the main speakers and use an external amp for the monitors OR use powered monitors for monitor use.

Jan 03, 2011 | Behringer Europower Pmp5000 Powered Mixer...

1 Answer

I would like to know I have 2 subwoofer with amp how can I connect it the best way thank you


first, you will need a passive crossover, i do not believe that the mono out of the mixer has a crossover., if the amp does not have a crossover. you could use the "mono" output, and split the signal, with an adapter, to both channels of the crossover, then run both of the low outs to the 2 channels of the amp. or, you could hook the crossover to the main laft and right outputs of the board. send the 2 low outs, left and right, to the subs' amp, and send the two high outs, left and right, to the main speakers' amp.

Nov 24, 2010 | Mackie 1604 Vlz3 16 Channel Mixer

1 Answer

Hello; I have a used Behringer pmp5000 mixer. The


Without knowing how you have your monitors configured it is hard to analyze what you have posted.

In brief, SW3 on the schematic that selects MAIN L and MAIN R in the upper position, MAIN and MONITOR in the middle, and bridged in the lower is used to configure the internal amps.

In the upper position, the amp power outputs come from the mixed stereo bus and are simultaneously controlled as a stereo signal by the MAIN slider.

In the middle position MAIN and MONITOR, the left amp receives the signal from the mix bus and is controlled by the MAIN slider. The MONITOR output from the other side of the power amp is controlled ONLY by possibly the "MONO" slider.

The schematics are hard to decode and what is needed is a signal flow diagram.

For my uses, I don't try to use splitting the power amps between mains and monitor but prefer to use the mains together with SW3 in the upper position (Note your 27 may be refering to the user manual designation for same switch). I then use another small amp from the 1/4 inch MONITOR jacks whcih are under control of the MONITOR sliders.
Please note that the MIX for these two MONITOR channels is controlled by the MON1 and MON2 knobs for each channel.

May 23, 2010 | Behringer Pmp3000 16 Channel Audio Mixer

2 Answers

Finding a way to hook this up


Send main 1 out to your Crown. Jump Mon send to PWR am insert.

Mar 11, 2009 | Behringer Pmp3000 16 Channel Audio Mixer

1 Answer

Monitor blowen, mixer-monitor channel went out


THE MONITOR OUTPUT AMP MAY HAVE BLOWN...COULD MAY ONLY BE THAT THE JACK IS BAD OR JUST A COLD SOLDER JOINT.....OR IT COULD BE JUST ABOUT ANYTHING IN THE MONITOR CHANNEL PUSH BUTTON MASTER VOL FOR THAT CHANNEL TAKE IT APART TAKE A LOOK AROUND BEFORE YOU BRING IT TO A REPAIR SHOP IT CANT HURT GOOD LUCK

Jan 07, 2009 | Behringer POWERED MIXER, 20 CH, 400 WTS...

1 Answer

Mackee PPM808M 1200 How to set the equalizer


Each channel strip has its own 3 band EQ with knobs that effect the hi, mid, and low.

The mid is centered at 2.5kHz and gives you 12dB of boost or cut in either direction, the high gives you 15dB of boost or cut from 12kHz and up, while the low gives you 15dB of boost or cut at 80kHz and below. At their mid positions these knobs are flat (no cut or boost).

The PPM808M also has two 9 band graphic EQs in the Master Output Section on the front panel, Monitor EQ and Main EQ. These two EQs are the last thing in the chain before the signal leaves the mixer on either of these line outs (monitor line out, or mixer line out).

The 'Monitor EQ' effects output to the monitor speakers on stage (and power amplifier if the 'Power Amp Routing' switch is pushed in).

The 'Main EQ' effects the signal to the main speakers (or the mixer line out).

Each of these 'Master Output' EQs has a Rumble Reduction button which when pressed in engages a low-cut filter which rolls off frequencies below 75Hz and is designed to prevent 'stage rumble' from things like footsteps on the stage being picked up by stage mics. These filters are separate from the graphic EQs and the Main Rumble Reduction switch effects only mono channels 1-6 (not stereo channels 7&8). It also has no effect on the EFX to MAIN or the TAPE IN. The Monitor Rumble Reduction switch however does effect the EFX to MON signal.

Dec 31, 2007 | Audio Players & Recorders

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