Connecting multiple mics to 1002fx mixer

SOURCE: How do I connect my behringer mixer desk to

The first thing to do is to swap teh L & R INPUTS to the amplifier. Did the speaker that works change?
If som the problem is with the setting of the mixer deck. If it did not change, then the problem is with your speaker wiring of the dead speaker, the speaker itself, or that side of the amp.
If the working speaker did swap, that means problem is with the mixer. The question then becomes how are you connecting to the mixer. You should be using TRS 1/4 inch connectors or preferably XLR from the MAIN outputs. These are balanced outputs connections.
If the inputs are from one of the mono inputs, the PAN control for that channel will control how much goes to each speaker... If at center, both will get same signal.
There are so many possibilities that I can't evaluate them until you try the test to find if it is problem of the amp or the mixer that I have given you to try.

SOURCE: LEVEL POT ON A BEHRINGER EURORACK MX 602A-BAD

It appears that both these use a 50K pot in the identical circuit and it is UNLIKELY they re-engineered very much so it is likely they use the same pot.

Behringer parts service should be able to tell you.

SOURCE: hi i would like to

by in ear monitor I assume you are talking about a set of stereo headphones.
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These would plug into the PHONES jack, which is located just to the left of the MAIN OUT jacks.
If your headphones have a 1/8 inch jack, you will require a 1/8 inch female to 1/4 inch male stereo adapter.
These are fairly common, and can usually be purchased at any audio store or Radio Shack or The Source by Circuit City.

SOURCE: i need to know what

The 1/4 inch should be a TRS (balanced connector) You should find pin 1 of the XLR to the sleeve of the TRS. Pin 2 of the XLR can connect to either the tip or the ring of the TRS and pin 3 of the XLR to the other TRS tip or ring. The line should be an audio interconnect line, balanced. If that doesn't work get back to me as there may be another problem. Make sure all interconnected equipment is powered from the same receptacle or power conditioner !!! Remember these subwoofers are WAY down in frequency so unless you have stuff down in the 50Hz or less range it won't do much. That is LOW...

SOURCE: the mixer has xlr main output x2 and jack

The output jacks are PSUEDO balanced so use TRS cables and you should be able to drive two amps from each with no problem either as a WYE or daisy chained connection. The PSUEDO balanced connections do NOT drive differential voltages, but tie the return to ground through a 120 ohm resistor. It is imperative that you power ALL the amps and the mixer from the SAME receptacle or power conditioner. If you don't do this, expect lots of hum and risk of ground bounce damage to your equipment. Run extension cord if you need to.