Difference in L and R EQ? GLD-80

Forums Forums GLD Forums GLD troubleshooting Difference in L and R EQ? GLD-80

This topic contains 7 replies, has 4 voices, and was last updated by Profile photo of Salty Salty 7 years, 4 months ago.

Viewing 8 posts - 1 through 8 (of 8 total)
  • Author
    Posts
  • #38208
    Profile photo of Salty
    Salty
    Participant

    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!

    #38209
    Profile photo of eotsskleet
    eotsskleet
    Participant

    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!

    #38210
    Profile photo of Chris93
    Chris93
    Participant

    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

    #38214
    Profile photo of Salty
    Salty
    Participant

    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.

    #38215
    Profile photo of eotsskleet
    eotsskleet
    Participant

    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!

    #38217
    Profile photo of BobWitte
    BobWitte
    Participant

    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….

    #38229
    Profile photo of Salty
    Salty
    Participant

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

    #38339
    Profile photo of Salty
    Salty
    Participant

    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!

Viewing 8 posts - 1 through 8 (of 8 total)

You must be logged in to reply to this topic.