Difference in L and R EQ? GLD-80

[SaltyParticipant]

I might be staring at this and not seeing it….but is there somewhere to differentiate the EQ on the Main L and Main R channels?
We’ve recently gone from a centered single line array hang (don’t ask) to a stereo line array.
When we had the single hang, we would try panning and get a different sound from the front of house mix depending on which side it was panned to and we put this down to something funky in the processor in how it was treating L and R inputs.

Now we changed to the stereo it’s still funky..if we pan right the FOH mix is toppy with no 250-1k, and if we pan left the FOH mix losses all the clarity.
Note that if we don’t pan anything we get a perfect mix.

Since this is exactly as what we were getting in the old set up, it can’t be the processors and must be in the desk somewhere, but I can’t find it for the life of me!

[eotsskleetParticipant]

Please check the sockets where you go out to the PA… is it the standard MAIN L+R Output? Or do you use a Matrix?
If you want independent EQ for L+R then you have to use a matrix! Otherwise it will not work! If your bass signals like bassdrum, bass, floortom and so on are all panned to L and all other instruments panned to R (however you would do this) then that would be the problem… well i think it isn’t the GLD that occurs that problem! Could be rather a cable or processor-problem of you PA!

Try to use a standard scene without any changes… if this doesn’t work, then the problem might not be found at GLD! You can also try to use another console to drive your Stereo Line Array with the same cables from Main L+R to check if there is definitly a problem with your line array!

[Chris93Participant]

Why can’t it be the processors? Are you using the same ones you were using when you had the mono hang and the same problem?

What is the equipment and how is it connected together?

Chris

[SaltyParticipant]

Hey guys thanks for the reply!

eotsskleet: We tested with the Template LR. We have replaced the leads from sockets and tried 4 different output sockets with the same results.

Chris93: They are new processors. For testing we have audio running into inputs 45/46 on the GLD-80 surface straight to the “Main LR”. Main LR is coming out of output sockets 1 and 2 on the AR84 expander, into AT Blackbird processors, one for each channel, which feed into 4 channels of AT HD7 Amps each. Those amps are running 6 cab hangs on either side.

[eotsskleetParticipant]

Can you test your PA with another mixer? (Maybe small analog? Just to confirm that there has to be a problem with the GLD and/or the multicore and stageboxes!

If the problem is only with the GLD you may try to use an AUX out instead of Main L+R! Then you have a mono signal feeding the PA processor!
If this still doesn’t work then try to connect another PA (monitor box or whatever) to the MAIN L+R and see what happens!

Good Luck!

[BobWitteParticipant]

This really sounds like a speaker management processor issue or connection between the speaker management to amplifiers OR blown speaker drivers or…..

Agree with hooking up a stereo source (small analog mixer or even a sound source (ipod etc.) to XLR connector fed directly into the speaker management system….

[SaltyParticipant]

Thanks for all the help guys.
I’ll hook up another desk tonight see how that goes!
^_^

[SaltyParticipant]

Heya

Just wanted to let you know that you were right!
There was a phasing issue with 120-2k being sent from one cab in the right hang and another sending the lower portion of those frequencies.

Thanks for all the help!

[Author]

Posts