1. The Rules have been updated regarding posting as a business on TGP. Thread with details here: Thread Here
    Dismiss Notice

Need help with A/B box vs. tweed Deluve

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by burner, Jan 31, 2008.

  1. Jan 31, 2008 #1
    burner

    burner Member

    Messages:
    2,600
    Joined:
    Dec 27, 2007
    Location:
    USA
    I'm trying to A/B between the two channels to use one for ryhtym and the other for lead.
    However, when I switch between them:
    a) There is a loud "pop"
    b) There appears to be maybe a ground loop because one of the channels "hums".

    Any help with this is appreciated.
     
    burner, Jan 31, 2008
    burner, Jan 31, 2008
    #1
  2. Jan 31, 2008 #2
    phsyconoodler

    phsyconoodler Member

    Messages:
    4,351
    Joined:
    Jul 11, 2005
    Location:
    calgary canada
    You need an A/B box that grounds one lead when the other one isn't being used.It's like having a guitar cord plugged into the amp with no guitar;hums like a banshee.
    So basically you need a better A/B box or modify the one you have.
     
    phsyconoodler, Jan 31, 2008
    phsyconoodler, Jan 31, 2008
    #2
  3. Jan 31, 2008 #3
    burner

    burner Member

    Messages:
    2,600
    Joined:
    Dec 27, 2007
    Location:
    USA
    Thanks.
    How would I go about modifying this one?
     
    burner, Jan 31, 2008
    burner, Jan 31, 2008
    #3
  4. Jan 31, 2008 #4
    phsyconoodler

    phsyconoodler Member

    Messages:
    4,351
    Joined:
    Jul 11, 2005
    Location:
    calgary canada
    You need two 3DPDT switches and wire them so when one channel is not used,that channel is grounded.
    So one channel is on and the other is just like there was no jack plugged into it.
    If you can't fathom what I'm taking about it might be just better to try a different A/B box.
     
    phsyconoodler, Jan 31, 2008
    phsyconoodler, Jan 31, 2008
    #4
  5. Jan 31, 2008 #5
    burner

    burner Member

    Messages:
    2,600
    Joined:
    Dec 27, 2007
    Location:
    USA
    I got it.
    I opened up this box and it doesn't even have 1 3dpdt switch.

    Anyone have recommendations for a decent A/B box?
    Thanks
     
    burner, Jan 31, 2008
    burner, Jan 31, 2008
    #5
  6. Feb 2, 2008 #6
    mudbuddy11

    mudbuddy11 Member

    Messages:
    41
    Joined:
    Jan 12, 2008
    is the morley ab or abc box any good? I have one on its way
     
    mudbuddy11, Feb 2, 2008
    mudbuddy11, Feb 2, 2008
    #6

Share This Page