Amplifier gremlin

Discussion in 'Audio Hardware' started by Vinylfindco, Jul 17, 2017.

  1. Vinylfindco

    Vinylfindco Forum Resident Thread Starter

    Location:
    Miami
    ive been noticing a vibration relatrd noise coming from my amp intermittently. It is not an amplified noise (it doesn't come through the speakers.) the amp is a Odyssey Khartago++. It seems to happen after warmup. About a minute of buzzing then back to normal for hours or days. I've also left it on continuously as recommended, and it still happens occasionally. Now this may sound crazy but I've noticed that sound several times when someone is in the kitchen. When water is running! Maybe an appliance (garbage disposal in sink) or microwave is on the same line? Could that be possible? The buzz comes from the left rear of the unit.
     
  2. timind

    timind Forum Resident

    Location:
    Brownsburg, IN USA
    The A/C transformer is located in the left rear corner on this amp. You could try and tighten the bolt that secures the transformer to the chassis. This quieted down a buzzing transformer for me once.

    If that doesn't work, you might also call Klaus at Odyssey.
     
    noahjld and Manimal like this.
  3. Vinylfindco

    Vinylfindco Forum Resident Thread Starter

    Location:
    Miami
    Thank you, I'll look at that, and call Klaus if it continues.
     
  4. Dave

    Dave Esoteric Audio Research Specialistâ„¢

    Location:
    Greater Vancouver
    It's possible that an appliance on the same circuit could cause it. Can you try another plug on a different circuit?
     
  5. AmericanHIFI

    AmericanHIFI Active Member

    Location:
    California
    You may have DC on the line causing the toroid to become physically noisy. It happens more than we notice.
     
    33na3rd likes this.
  6. Vinylfindco

    Vinylfindco Forum Resident Thread Starter

    Location:
    Miami
    Thanks for all your replies. All outlets in the room are on the same circuit. I have a set of QuietLine devices that I haven't used in this set up. Do you think it would help to place these in the circuit at various points. I have four units.
     
  7. noahjld

    noahjld Forum Resident

    You need to call in an Audio Exorcist.
     
    Helom, Manimal and AmericanHIFI like this.
  8. 33na3rd

    33na3rd Forum Resident

    Location:
    SW Washington, USA
    +1

    There are devices to block DC on the AC line. AVA HumDinger DC Line Blocker
     
  9. reb

    reb Long Live Rock

    Location:
    Long Island
    You live in a private house?

    I had the same issue when my old boiler fired.

    As already mentioned, the cause is likely DC on the circuit. The amplifier transformer is vibrating / buzzing
     
    noahjld likes this.
  10. Vinylfindco

    Vinylfindco Forum Resident Thread Starter

    Location:
    Miami
    Yes it's a private house.
     
  11. Manimal

    Manimal Forum Resident

    Location:
    Southern US
    "The Sow....nd is mine!"
     
    noahjld likes this.
  12. noahjld

    noahjld Forum Resident

    "The power of hi-fi compels you!"
     
    Dave likes this.
  13. reb

    reb Long Live Rock

    Location:
    Long Island
    Assuming you don't have an electric hot water heater.

    The clue for me was water usage .

    Hot water Boiler / Furnace firing dumping DC on your amplifiers electric circuit.
     
  14. Vinylfindco

    Vinylfindco Forum Resident Thread Starter

    Location:
    Miami
    It's electric.
     
  15. InStepWithTheStars

    InStepWithTheStars Forum Resident

    noahjld likes this.
  16. noahjld

    noahjld Forum Resident

    You sure it's not a possessed house?:shake:
     

Share This Page