Your Source for DIY Pedal PCBs and NostalgiTone! GuitarPCB Forum Show Off Your Build SiGE Fuzz: Silicon and Germanium Fuzz Faces in parallel

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  • #20808
    Anonymous
    Inactive

    Here is a recent build I did that uses two of the new PUFF boards. The silicon board employes a couple 2N3904 PNP transistors while the Germanium uses a couple 2N404 PNP transistors. The two circuits are in parallel via the germanium PUFF using a Buff n’ Blend.

    I recall somebody already using  Two Face for a similar build. Cybercow’s PUFF builds using the Table of Elements symbols provided inspiration for the name of this build, SiGe. It lent itself to the Yin-Yang Motif.  I was able to source a UV LED for the black light (which disappointingly appears blue but that’s reality for you).

     

    Cheers!

     

     

    #20810
    Chuck
    Participant

    Um, you left a little empty space there in the box.

    Holy smokes that is packed in there!

    Chuck

    #20813
    Big O
    Participant

    I built a “Two Face” but not quite as complex as yours.  Using a standard NPN FF circuit I used a S9013 Si transistor paired with a NPN Ge transistor that was chosen and spec’d specifically for this circuit.  The Ge transistor is the overdriven/fuzz transistor in my pedal.  I cannot tell the difference between my hybrid FF and my all Ge FF sound wise.</p>

    #20816
    Cybercow
    Participant

    Paul – very elegantly done. Nice tight build. (Is that a 1590B enclosure?) Clever use of the BnB too! And I’m digging the ‘candy wrapper’.

    #20818
    Anonymous
    Inactive

    There is a defininte difference between the 2N3904s and the 2N404s with the latter having a being a less tight, gainy sound. That said, they are very similar so mixing the two is not all that useful (for me at least).

     

    Cybercow, as much as I wanted to cram it in a 1590B, i took the easy way out with a 125B. Thank you for the compliments!

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