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Thread: Help/Advice needed

  1. #1
    Senior Member invstbiker's Avatar
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    Help/Advice needed

    Hey guys, as you propably are aware the Sturgis MC rally starts here in 1 week. Here's my dilema. On Deck number two I have 6 JBL EON's hanging in series. During the daytime they play well, then at night some have a crackle type noise. I've swapped them out for the spares I have but still has this intermittant crackling only at night. I'm perplexed. The whole system is the same as last year, amps wiring, etc

    Could the signal be too hot?

    Very Strange, any advice appreciated.

    Cell 605-490-0543

    THX
    "It only costs 80% extra to go first class"

  2. #2
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    I would think your problem is in your electronics and not your speakers. Your speakers only reproduce what the amp tells it to!!!

  3. #3
    Administrator Robh3606's Avatar
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    Any lights that could cause interference?? What else runs at night that could mess up the power they are on???

    Rob

  4. #4
    Senior Seņor boputnam's Avatar
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    Quote Originally Posted by Robh3606
    Any lights that could cause interference??
    Neon...

    or, a Bug Zapper

    bo

    "Indeed, not!!"

  5. #5
    Senior Member invstbiker's Avatar
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    Yes, Lots of colored neon's, is there a simple device to put on the speaker 110 volt power cable to isolate the interference? Suggestions?
    "It only costs 80% extra to go first class"

  6. #6
    Senior Seņor boputnam's Avatar
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    Can you put the audio on a separate circuit and separate ground?
    bo

    "Indeed, not!!"

  7. #7
    Senior Member invstbiker's Avatar
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    correction

    Flourescent's not neons
    "It only costs 80% extra to go first class"

  8. #8
    Senior Member hmolwitz's Avatar
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    Computer grade power strip?

    Or a true ups battery backup will give you a sine wave power supply.

  9. #9
    RE: Member when? subwoof's Avatar
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    You omit one detail - are these powered??

    If so then make SURE you are driving these with a true differential source!

    90% of the "pro" gear out there have "impedance" corrected balanced outs ( mackie, soundcraft, behringer, samson,yamaha, etc ) that only put a resistor to ground on the cold lead ( - ).

    This is fine for most apps but a long distance send ( and I have to assume yours is REAL long ) requires a real output whose ground can be lifted if needed since the powered speakers will have a *local* ground reference!

    Balanced inputs are easy - real balanced outputs cost a LOT and only the best audio gear have them.

    Get an aphex compellor, dominator, or a multiple delay unit that has transformered outputs. You can use a UREI LA22 but that's a grand.

    Post the complete component configuration and maybe an obvious solution will be seen.

    sub

  10. #10
    Senior Member invstbiker's Avatar
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    Yes, EON's are self powered.

    I just supply the signal to these EON's. They have their own volume control.
    "It only costs 80% extra to go first class"

  11. #11
    Senior Member invstbiker's Avatar
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    Kudos ROBH3606

    Kudos to Rob who first pointed me in the direction of lights. Turns out there are 3 flourescents on photocells that when they go on the EON's don't like 'em. These 3 lights were not on the building last year at this time as we were in the middle of construction. I will now change these style lights out and problem solved. Thx to all!! This forum has proved itself again, without it, I'd still be trying to figure it out...

    If anyone needs some eye candy, check out www.oneeyedjackssaloon.com the week of August 6th, click on web cams, pole cam. This is not an advertisement, simply good, clean adult fun. And if you're in the area, stop in and say hello...
    "It only costs 80% extra to go first class"

  12. #12
    Senior Member JBLnsince1959's Avatar
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    Steve:

    good to hear you got it worked out... yes, Rob and gang are incredible...

    I've been meaning to post the pictures of your place on the forum ( and still will) but my scanner went down and not enough time to figure it out..

    Have a great, crazy and profitable couple of weeks, if we were'nt so busy with my business we'll be up to say hi

  13. #13
    Senior Member invstbiker's Avatar
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    Thx for the kind thoughts...
    "It only costs 80% extra to go first class"

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