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Ampeg rocket bass problem

Discussion in 'Amps and Cabs [BG]' started by bass dan, Mar 29, 2015.


  1. my Ampeg rocket bass 100 has started to distort at times. Usually on lower notes but sometimes on all notes. It's almost a fizzy sound with some speaker crackling sounds. Doesn't happen all the time but it's getting more frequent.

    I'm sure I'm not clipping the preamp. I sprayed contact cleaner in all the inputs. Took off the back and checked all the "plug in wires". I think it may be something with the line out or headphone jack. I ran a cord in and out off the inputs and at one point it killed the sound. I then continued to plug and unplug the cord repeatedly and the sound came back on.

    Any one else have this problem with their Ampeg rocket bass amp? It is an American made not the import if that makes a difference.
     
  2. anderbass

    anderbass

    Dec 20, 2005
    Phoenix. Az.
    I'd try cleaning the headphone jack again. Its got switching contacts that mute the speaker, just a little dust/debris in those contacts can cause your symptoms. Try placing the amp upside down on the edge of a table, so you can still get to the headphone jack. Use the little straw to spray your contact cleaner in it, then quickly insert a guitar or headphone plug in/out several times, then repeat the cleaning process a couple more times. Doing this with the amp upside down might help carry more of the dirt out and away from those switching contacts.
     
  3. Good idea. I'll give that a try.
     
    anderbass likes this.
  4. That did work. Sorry for the delay of gratitude.
     
    anderbass likes this.
  5. anderbass

    anderbass

    Dec 20, 2005
    Phoenix. Az.
    :thumbsup:
     

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