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can the AC power in some buildings cause bad sound?

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  • #1

    can the AC power in some buildings cause bad sound?

    Heres the deal....a bar we play at had some new lighting and a TV in back of the stage last time we played there. What changed that nite was 1-my single coil guitars were buzzing like never before, 2-both my guitar and my bass player were having issues with our tone like u would typically notice in a room with bad acoustics, 3-PA was unusually hard to hear ourselves vocally, and 4-my digitech drop (pitch shifter dedicated to use for drop tuning) had a VERY noticable delay that i have never noticed before.It was as tho the usual single digit latency now felt like 20 ms and was so noticable it was throwing me off.

    Of course i realize lighting and maybe that TV can cause singe coil buzz, but the rest was never a problem there and i wonder if the lighting and maybe that TV could cause any of the other issues or was this just coincidence that all these things happened in that room for the 1st time?
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  • #2
    LED lights are noisy. If you tune a small portable radio to an open frequency, you can move around the room and locate noise sources. Probably cheap lighting. If you 'sound check' when the club is closed it might be easier because you can turn circuits off at the electrical panel. If you're having problems, you're probably not alone.

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    • #3
      I know lighting can cause noise but that's not what i'm asking. I only mentioned the noise to show that as a indicator that conditions have changed since last time there. My concern are the other issues i mentioned.

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      • #4
        I know lighting can cause noise but that's not what i'm asking. I only mentioned the noise to show that as a indicator that conditions have changed since last time there. My concern are the other issues i mentioned.
        Have you done any testing? What is the voltage on the circuit? Do you have a power conditioner? Are you using the same cables? Are other acts having the same problem? Eliminate as many possible interference sources as you can and re-evaluate.

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        • #5
          Nothing we do has changed.

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          • #6
            Nothing we do has changed.
            Take it up with the club if you don't wish to try and troubleshoot it yourself. Is it a house PA?

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            • #7
              I'm really wondering about the added latency on your Digitech. That seems weird and I can't think of any reason dirty power should cause this. Maybe if the line is actually low or high the effect isn't working properly? Or... I'm remembering a condo complex I worked on in Ca. that had a problem with dirty power so the developer had a giant FET regulator put in. Some of the residents had trouble with home media as a result but the symptoms weren't defined. I guess with the FETs the power is stored and released in a way that alters the normal 60Hz AC adding a much higher frequency artifact. So I wonder if something like that might somehow 'confuse' the Digitech unit.?.
              "Take two placebos, works twice as well." Enzo

              "Now get off my lawn with your silicooties and boom-chucka speakers and computers masquerading as amplifiers" Justin Thomas

              "If you're not interested in opinions and the experience of others, why even start a thread?
              You can't just expect consent." Helmholtz

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              • #8
                Originally posted by Chuck H View Post
                I'm really wondering about the added latency on your Digitech. That seems weird and I can't think of any reason dirty power should cause this. Maybe if the line is actually low or high the effect isn't working properly? Or... I'm remembering a condo complex I worked on in Ca. that had a problem with dirty power so the developer had a giant FET regulator put in. Some of the residents had trouble with home media as a result but the symptoms weren't defined. I guess with the FETs the power is stored and released in a way that alters the normal 60Hz AC adding a much higher frequency artifact. So I wonder if something like that might somehow 'confuse' the Digitech unit.?.
                Yeah, that is confusing but normally that drop unit's latency isn't really noticable as a delay. It just feels a bit off in a way i can't really describe But at this gig there was a noticable delay. And in fact, my amp is a modeler so theres a latency there too of course but in 4 years i have never noticed anything at all. Yet that nite even my amp seemed kinda off, tho i didn't really notice a delay, but i'm thinking maybe thats what it was. I found myself getting behind the beat often and i've never had that happen before. The drop cause what was a very obvious delay as tho i had stepped on a delay pedal set to 100% wet signal sand set to 20 ms. I don't see how thats possible but i know what i experienced.

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