This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Friday, July 20, 2018

Run Off Groove Whisker Biscuit

For Fuzz Friday here's the Run Off Groove Whisker Biscuit–Big Muff meets Bazz Fuss. From the ROG site:

The Whisker Biscuit is a hybrid of the Bazz Fuss and the Big Muff Pi. A single Bazz Fuss stage replaces the two clipping stages of the BMP. Smooth, super-long sustain, and good clean-up with the guitar volume knob make this circuit an interesting alternative to the standard BMP.

I've included the optional 47pF caps as well as the tone control mod. Omit the 47pF caps if you want more treble, and if you prefer a more standard tone stack, replace the 22k resistors with jumpers and use a B100k pot.



5 comments:

  1. Could You put a 1M pot before the input and have it be at sort of a gain control?

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    Replies
    1. Yes, though a smaller value would work as well. 100k, 250k, etc.

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  2. Was für Transistoren benutzt Du ?

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    Replies
    1. I used what it calls for on the bottom of the layout. 2N5088 for Q1 and Q3. MPSA13 for Q2.

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  3. I'd call this verified.
    I used the 47pf caps and there is plenty of treble still for my taste.
    I experimented with and without the 22k resistors and a B50k and B100k pot for the tone control. I preferred keeping it just how the layout is.
    I tried a B250K pot before the input but that didn't do much. C1M pot worked much better and was worth it to me for some gain control.
    Thanks very much for this layout and all the others! Awesome website!

    ReplyDelete