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high-pitched buzz in one room, not in another...

Discussion in 'Hardware, Setup & Repair [BG]' started by taylor16, Feb 2, 2014.


  1. taylor16

    taylor16 Thank you, Mr. Miner. Supporting Member

    Dec 25, 2012
    USA
    Unfortunately, in the room in my recently renovated house that I've dedicated to the "Man's Den", I've developed a very loud high-pitched buzz that isn't found when I've brought my bass/amp/cab to other rooms. I'm using a decent power bar with grounding so I've ruled that out. Used the same cable in each room test. Anyone have any thoughts?
     
  2. 96tbird

    96tbird PLEASE STAND BY Supporting Member

    Dec 13, 2010
    Manitoba, Canada
    Fluorescent lights? (Yech)
     
  3. HeavyDuty

    HeavyDuty Supporting Curmudgeon Staff Member Gold Supporting Member

    Jun 26, 2000
    Suburban Chicago, IL
  4. Pilgrim

    Pilgrim Supporting Member

    It's RF interference from some source. Shielding is needed. Start turning stuff on and off and you'll find the source. Dimmers, fluorescent lights and anything with a motor are common sources of RF.

    Sometimes it's your amp if you're standing too close.
     
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  6. bassbenj

    bassbenj

    Aug 11, 2009
    Does the noise go away or change volume when you touch ground (strings, jack body, etc.)? If so it's a shielding problem.

    If not, does the noise change when you change orientation of the bass? In that case it's single coil noise.

    Clearly something in that room is an electrical/magentic noise source as people have suggested. Turning off the noise source will stop the noise, but best is to try to fix the problem like with shielding if that is the kind of noise.
     
  7. taylor16

    taylor16 Thank you, Mr. Miner. Supporting Member

    Dec 25, 2012
    USA
    There are dimmers in the room. Quite a number of them, actually. As well, the buzz does improve when I touch my strings versus when the bass is not being played. The bass is has humcancelling pups so it's not a single coil issue. I'll have to see what happens when I use alternate lighting and not turn on the dimmer lights.

    Thanks!
     
  8. DiabolusInMusic

    DiabolusInMusic Functionless Art is Merely Tolerated Vandalism Gold Supporting Member

    As bassbenj said, if your buzz goes away when you touch metal/strings/bridge you have a shielding issue, you need to give that bass a proper shielding job. You cannot completely remove the buzz but you can make it so negligible you will not complain or notice.
     
  9. Pilgrim

    Pilgrim Supporting Member

    Agreed. But note that shielding is required because there is RF present. You have two issues, and need to deal with both. If shielding suppresses the buzz, then you're OK, but it wouldn't hurt to tackle the RF as well. You may benefit by looking for dimmers that emit less RF, or eliminating some dimmers for on/off switches.
     
  10. taylor16

    taylor16 Thank you, Mr. Miner. Supporting Member

    Dec 25, 2012
    USA
    I'm surprised about the shielding issue, though. The bass that I am talking about is a relatively new Sadowsky Metro which is otherwise impeccably built and from what I've read, has never had any quality issues in that regard. My Lull and Lakland Skylines don't have this problem...
     
  11. DiabolusInMusic

    DiabolusInMusic Functionless Art is Merely Tolerated Vandalism Gold Supporting Member

    I don't have experience with Sadowsky but it IS a Fender clone, Fender insists 60hz hum is not a problem so it is possible they don't either. Heck many players and even techs think it is not a problem and you are just expected to hold the strings at all time. It is also possible that the shielding had a failure somewhere, I would be surprised if there was no sort of shielding in there.
     
  12. RSBBass

    RSBBass

    Jun 11, 2011
    NYC
    You may also want to get an outlet checker and make sure you electrical outlets are properly grounded. They cost around $5.
     
  13. What else is plugged in in the same circuit? I had required my bass and when I was done it buzzed like crazy. After tearing it apart again I realized it was the tv I had just set up in the basement on the same circuit.