Question about Behringer UB2222FXPRO - Eurorack Ub2222fx-pro
Turned on my mixer to find a flashing 8 on my dual engine disp as well as a light thumping sounds coming from my speakers that is following along with the flashing 8, nothing more. is there anyway to fix this? or is my eurorack toast?
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Posted on Jan 02, 2017
Those were used for mic connectors at one time,,, they are related to the Amp 91-MC3F family of connectors and those are out of production and they are demanding $20 to $50 for one connector.
That is a ridiculous price and I would be tempted to swap out the connector for a more available design.
On eBay item 250401122616 is one but they want $13 pus $11 shipping which is a rip off.
These were used on some OLD CD radio mics.
Posted on Dec 15, 2009
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.
Posted on Dec 28, 2009
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.
Posted on Apr 28, 2010
It is quite possible that you have bought a set that has a faulty preamplifier. The equaliser needs many such mixing preampflifer IC's mostly coupled together and it could be that there is a failure in one or several of the channels, the stages of the preamplifier. You must use a signal test to identify the faulty stage. You will need some help to go through these circuits and identify the op amps that are faulty. Try to check for voltage on the op amp stages and test with an audio signal for the section in fault. Hope you try. Good day.
Posted on Aug 11, 2010
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