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my amp hates c#

Discussion in 'Amps and Cabs [BG]' started by littlezak, Mar 10, 2008.

  1. littlezak


    Mar 4, 2007
    So I have a Hartke HA3500 combo and whenever I play C or C# on my bass I get a delayed kind of crackling/ distortion sound from my amp. I wasn't sure what it was so I got a new tube and it still does it. It's not the Bass or the cord (its brand new) so its gotta be the amp (right?). :help::help:

    So my question is What is causing this noise and How do i fix it?

    thanks in advance
  2. Yapser


    Aug 14, 2007
    Do you have it on a low volume too? It could be your string too, I have similar problems with my current set on the A string.
  3. THSL


    Jun 3, 2007
    New York, NY
    Which C# is it? C#0 - 17.32 Hz?
  4. newfuture


    Jul 13, 2007
    My trace elliot head would do this from time to time, best guess is it was a cold solder joint on a PCB resonating on certain notes and above certain volumes (quieter was OK). I went through it and reheated all the solder joints, and tightened the nuts holding the output transistors in place, and the problem went away.
  5. 62bass


    Apr 3, 2005
    That sounds like the most likely cause. Sometimes it can be a mechanical vibration from some part of the cabinet or amp chassis, but in this case since the sound is cutting out I'd say you're right.
  6. fdeck

    fdeck Supporting Member Commercial User

    Mar 20, 2004
    Madison WI
    HPF Technology LLC
    So play D-Flat. :rollno:

  7. + 1 lol
  8. Ric5

    Ric5 Supporting Member Commercial User

    Jan 29, 2008
    I grow organic carrots and they are not for sale
    I was going to say that ... but you beat me to it ...

  9. greenboy


    Dec 18, 2000
    remote mountain cabin Montana
    greenboy designs: fEARful, bassic, dually, crazy88 etc
    Yeah, which C#? And are you sure it isn't the speaker cab and not the amp?
  10. tighten the screws round the cab grille

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