Home Forums GuitarPCB Build Support Buff N Blend combo question

  • This topic has 6 replies, 3 voices, and was last updated 2 years ago by Anonymous.
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  • #1737
    Anonymous
    Inactive

    Working on a combo build that’s been shelved for a while.  It’s a Sriracha Fuzz & G-02 combo, with a Buff N Blend in between so I can use potentiometer to blend the two circuits together.  The signal path will be:

     

    Input -> 3PDT(send) -> Sriracha -> BnB(in) -> G02(send&return from BnB) -> BnB(out) -> 3PDT(return)

    The BnB will be hard-wired “on”… I think this’ll work, but want to make sure there isn’t a phase issue.  I might need to draw the diagram to make it easier to understand.  Any comments?

     

    Thanks

    #1740
    Cybercow
    Moderator

    You can follow the BnB’s Build Document here: https://guitarpcb.com/wp-content/uploads/2018/06/BD_Buff-N-Blend.pdf

    From what I can make of your description, it reads like you’re on to it.

    If you want to apply the BnB differently from the Build Document, please draw and share your diagram.

    #1751
    wilkie1
    Moderator

    The G-02 does not invert the signal.  However, the Sriracha Fuzz does.  You can restore the signal chain to a non-inverted signal by adding a Stage 3 into the chain.  Then the BnB will work properly.

    #1763
    Anonymous
    Inactive

    #1764
    Anonymous
    Inactive

    Wiring diagram inserted above.  Is this viable; do I need a Stage3 after the Sriracha before it goes into the BnB?

    #1765
    Cybercow
    Moderator

    Since the Sriracha inverts the phase of the signal, (as Wilkie points out), connecting it as you’ve diagramed will cause a severe ‘cancellation’ effect. Yes, adding a Stage3 (in series and directly before or after the Sriracha) will re-invert the signal and match phase with BnB where it meets the Animal.

    #1768
    Anonymous
    Inactive

    Many thanks for the help!

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