My pmp6000 wont work in mon1/ mono mode. I have one speskon channel going to two mains and the other to two monitors Can't get sound.

Bridge mode you use chan B (left connector on the back) using a SPECIALLY wired Speakon. The impedance of a speaker connected as such CANNOT be LESS than 8 ohms.

In the Main/Mon mode, the two amplifiers are separated in function. The monitor knobs for EACH channel input control the mix sent to Channel A which is for the monitor speakers. The Mon1 controls the level sent to Output A for the monitor speakers. Mon2 fader is NOT used.

The individual channel faders control the main mix and the Main fader controls the level sent to Output B which goes to the main speakers.

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.

You have to make a choice... you can tie two main speakers to the "B" channel and the two monitor speakers to the "A" channel.
The speaker configuration slide switch is set to MON1/MONO. The main slider controls the volume of the mains and the MON1 slider controls the level of the monitors in conjuction with the rotary MON1 knobs for each channel.
Each output should not be loaded heavier than 4 ohms. This would be a max of two 8 ohm speakers for each output.

If you only have powered speakers for both mains and monitors, you will NOT use the Speakon outputs on the back.

You will connect USING BALANCED TRS audio cables from the MAIN L and R jacks on the top of the unit to your powered main speakers and also connect the monitor speakers by TRS balanced connections to the MON1 and MON2 1/4 inch jacks on the top deck of the unit.

POWER ALL the speakers AND the mixer from the same receptacle or power source/conditioner.
This may mean running an extension cord alongside your audio snake from the stage. Failure to do do this can cause damage due to exceeding the common mode noise (ground bounce) of different power sources.

Leave the speaker slide switch in the Main L/R.

Adjust the rotary knobs for Mon1 and MON2 for each channel to proportion each to the monitor "mixes" which you will control overall with the MON1 and MON2 sliders.
You will use the MAIN slider to control the mains level.

To set the trims for each channel, push the PFL so only that LED illuminate red... then at max inout level for the channel, use the LED bar graph on the right side so it is just a little below the clip level where the top LED's of the bar graph do not illuminate.

Make sure the appropriate channel rotary knob MON1 knob is turned up for the channels you want into MON1. ALSO test other channels if they can be sent to MON1. The MON jacks are TRS with the tip as the hot and the sleeve as resistor to ground.

Hopefully you have used good practice and have ALWAYS powered whatever you are driving from the MON1 out from the same receptacle as the PMP5000. If not, ground bounce MAY have destroyed the driver in thee PMP5000. They USUALLY don't tell you these things in the user manuals, so it is up to us electricaal engineers to educate.

FIRST plug in a set of headphones and see if sound comes out (it will only be one side and fairly low volume, usually the left). If it does, then cabling and whatever amp you have for the MON1 has a problem. I have schematics and can help you troubleshoot a bit.

Also PLEASE read the tip I have posted on here about a grounding hazard of the A channel when using Speakon to 1/4 inch cables.

It is NOT clear what configuration you have set up and what you consider the MONO output is, whether it is the power amp MONO side output or the line level MONO 1/4 inch jack on the top of the unit (this jack is NOT speaker output). If you can run normal stereo speakers using both sides of the power amp in the AB mode, the problems you are having is pilot error.

REMEMBER the main out 1/4 inch jacks are BALANCED TRS jacks... DO NOT put mono plugs into these.

A WARNING: If you use Speakon to 1/4 inch speaker cables, remember that the BARREL of side A is HOT, not the tip!!! You can fry the amp if you inadvertently ground that barrel someplace. (Side B has the barrel grounded) This information is NOT readily available in the manual and results in many a blown amp. They do this to implement the "Bridged" mode easily.

I have schematics and can unravel most any problem you are having.

Do you mean the SPEAKER mono output or the top mounted 1/4 inch jacks?

The A side power amp is used to drive monitor speakers and the B side the mains.

All other connnections of speakers require amplifier OR powered/active speakers.

Please read a tip I just posted regarding a hazard of the Speakon to 1/4 inch cables when used with these PMP mixers.

If you are using your main speakers as stereo, then you will need either powered monitor speakers OR an additional seperate amp for them. The mon outputs on the mixer are LINE LEVEL and are not driven by a power amp. Use TRS (balanced) interconnect cables from these to POWERED monitor speakers.

You can parallel your two mains providing the parallel impedance is 4 ohms or greater (two 8 ohms in parallel at most). The the monitor speakers can be paralleled and the switch set to Main/Mon so that one side of the power amp drives the mains and the other drives the monitors.

To prevent damage to the mixer, make sure all speaker leads are secure before powering the system. Run the speaker leads through the handles of the speakers to prevent inadvertent unplugging due to personell tripping over cables.

DO NOT use the bridge mode in your use.

With the AB switch at the center position Mon1/Main you control the volumes INDIVIDUALLY with the MON pot for each input that is a couple positions above each of the input sliders.

You want the mon1/mono setting. The center position of the slide switch to use each half of the power amp seperately. Then fiddle with the controls BOTH in the strips and the faders to get desired result.