1. A proposal is now up as a poll to change the guidelines of TGP to only allow member self-deleting of post/threads for up to thirty days of the original posting it. We are now watching the poll here. Click here to view the thread.

    Dismiss Notice

Iso pump problem

Discussion in 'Effects, Pedals, Strings & Things' started by slowth, May 23, 2011.

  1. slowth

    slowth Member

    Messages:
    742
    Joined:
    Nov 20, 2007
    I bought an isopump to supply the DLS on my board with 18V to try to get the fatness and headroom.

    I tried it with my pedalboard with the rest of my gear in a godlyke daisychain. However there was a huge amount of hiss coming from my church sound system. I couldn't diagnose the problem till I got home and realized that it was the iso pump. The hiss level dropped when i bumped it down to 12V, and when i totally removed the iso pump from the daisy chain, there was lil-no noise.

    Then I tried isolating just the pedal and the isopump removing all the other pedals and it was silent.. so it's not an issue with the iso pump but the way it interacts with the rest of the daisy chain.

    Do you have any advice how I might try troubleshoot the problem?

    thanks guys.. =) much appreciated!
     
  2. stinkfoot

    stinkfoot Member

    Messages:
    6,144
    Joined:
    Jun 20, 2004
    Location:
    Uppsala, Sweden
    Charge pump circuits sometimes cause interaction issues with other pedals, when fed from a daisy chain. Running it from its own power source should cure the problem (although you could just get an 18vDC adapter instead, I know...).
     
  3. slowth

    slowth Member

    Messages:
    742
    Joined:
    Nov 20, 2007
    mmm so that makes it 3 power supplies for 6 pedals hahahaha man... more complicated than i thought!
     
  4. slowth

    slowth Member

    Messages:
    742
    Joined:
    Nov 20, 2007
    well Godlyke replied and said that the iso pump is an isolated output.. not oscillating kind... mmm
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice