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, September 23, 2022

Solid Gold FX Rosie

 Happy Fuzz Friday, all! Here's a cool silicon Tone Bender style fuzz from Solid Gold Fx. Aside from using silicon transistors, the first stage is a JFET. When the switch is closed it adds in a 4.7uF input cap in parallel with the 330pF input cap. You could replace the switch with a B100k pot (lug 1 to Sw1 pad, lugs 2-3 to Sw2 pad) to blend the two values. Set the trimmer to 4.5v for the JFET and adjust by ear as needed. 





5 comments:

  1. It Works! Sounds pretty cool with BC549s. I didn't have 239s. I'll audition others later, Woohoo Friday night transistor swapping!

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    1. So what are the results of Woohoo Friday night transistor swapping? Which is the best combination for you?

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  2. Hello, tagged, very good sound, would you have a schematic? Thank you very much.

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  3. Hi! It would be great if there's a chance you make the layout for this pedal https://www.freestompboxes.org/viewtopic.php?t=32202

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    1. You may want to be sure to visit the blog tomorrow...

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