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All my basses hum/buzz through all my amps

Discussion in 'Basses [BG]' started by twinfallsbass, Mar 25, 2020.


  1. twinfallsbass

    twinfallsbass Supporting Member

    Jan 24, 2005
    Somewhere in AZ
    Hi all. Not sure if this issue should be posted in Basses or Amps section. So just like the title says, all my basses hum/buzz when I take my hands off the bridge or strings. I have checked ground continuity between strings/ bridge/ input jack and even the knobs, all are good. It does not matter what amp, instrument cable or outlet I am using in my music room, constant hum/buzz, it's pretty darn loud too. I will try another room, but besides that, am I missing anything? Basses:

    Carvin JB5 active/passive
    Reverend Rumblefish 5L passive
    USA Fender V5 P-bass passive
    Spector Czech made
     
  2. Sid the Kid

    Sid the Kid Supporting Member

    Jun 7, 2013
    Illinois
    Are you using any pedals?
     
  3. jthisdell

    jthisdell

    Jun 12, 2014
    Roanoke, VA
    Sounds like none of your outlets are properly grounded.
     
  4. twinfallsbass

    twinfallsbass Supporting Member

    Jan 24, 2005
    Somewhere in AZ
    No pedals
     
  5. twinfallsbass

    twinfallsbass Supporting Member

    Jan 24, 2005
    Somewhere in AZ
    I am beginning to think that as well.
     
    Rip Van Dan and teh-slb like this.
  6. Chuck M

    Chuck M Supporting Member

    May 2, 2000
    San Antonio, Texas
    Light dimmers can cause buzzing.
     
  7. Who wired the outlets?
     
  8. If you shield the pickup & control cavities & pickguards and connect them to ground they’ll be silent. I just did that to an old Tokai with the same symptom and it’s as quiet as my Warwick now.

    See NBD — Tokai Hard Puncher, 1980 P Bass clone
     
    Artman likes this.
  9. TheGreatSealof

    TheGreatSealof Gold Supporting Member

    Nov 15, 2010
    Deptford, NJ
    Check your social distances. Possibly sonic distances. Just saying.
     
    Microbass, K-2, pappabass and 4 others like this.
  10. twinfallsbass

    twinfallsbass Supporting Member

    Jan 24, 2005
    Somewhere in AZ
    Now this makes sense, I just installed new LED ceiling lights with a dimmer switch. I’ll try everything with the lights off and see if it lessons the hum.
     
  11. twinfallsbass

    twinfallsbass Supporting Member

    Jan 24, 2005
    Somewhere in AZ
    I’ll check this out for sure. It just seems odd that ALL my basses are doing it. My Spector has always been quiet as a mouse.
     
    imabuddha likes this.
  12. Artman

    Artman Supporting Member

    Dec 28, 2017
    Georgetown, TX
    It might also lessen the hum!;)
     
    Last edited: Mar 25, 2020
  13. Chrisk-K

    Chrisk-K

    Jan 20, 2010
    Maryland, USA
    This is normal. If they become quiet when you touch a metal part of the basses, nothing is wrong.
     
    Kro likes this.
  14. sawzalot

    sawzalot Supporting Member

    Oct 18, 2007
    I have dimmers that cause this. Very annoying.
     
    Loring and jdh3000 like this.
  15. Normal for basses that don’t have complete shielding. If you want it always quiet it can be fixed. ;)
     
  16. eastcoasteddie

    eastcoasteddie Supporting Member

    I had a glass carafé coffee maker, and when the base heater turned on, I got hum through my amp.
    I have a different coffee maker now, no more hum.
     
    DrMole, jdh3000 and Toptube like this.
  17. bikeplate

    bikeplate Supporting Member

    Jun 7, 2001
    Upstate NY
    Your house or lights in the room
     
  18. Your P should be just about dead silent. Everything else is a crapshoot.
     
    fakeneckplate'65 likes this.
  19. Thumpin6string

    Thumpin6string Supporting Member

    Apr 25, 2013
    Redding CA
    You didn't mention your cable from the bass to the amp. Have you tried different ones? I've had cables go bad and cause hum. Worth a shot.
     
    JZQuantum, Kro, jdh3000 and 1 other person like this.
  20. Toptube

    Toptube

    Feb 9, 2009
    yesI have had buzzing from bad outlets, poorly wired lighting, dimmers, and a bad cable.
     
    jdh3000 likes this.

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