Project overview
If life gives you lemons, make some juicy tone! This MOSFET-based emulator of an overdriven MATAMP GT120 is the perfect solution for any guitarist’s sour note woes. With the ability to create anything from low-medium gain drive to fully saturated high gain tones, the Giant Green Lemon will turn those sour lemons into sweet, musical nectar.
Introduction
The Giant Green Lemon is more than just a fun name and a high-quality overdrive pedal, it’s a ray of musical sunshine in your rig. This Dunwich DA120 replica has been designed to bring a smile to your face and a song to your heart. With a depth rotary switch that changes the value of the output cap on the first MOSFET stage and a Baxendal tone stack between the second and third MOSFET stages that get more tonal variation, you can turn any dull performance into a juicy, musical feast.
So, if life gives you lemons, remember to reach for the Giant Green Lemon and add a little bit of musical zest to your life!
Controls
Potentiometers
- Bass
- Boost
- Drive
- Gain
- Treble
- Volume
Switches
- Rotary switch (SW1)
For any technical questions regarding this build don’t forget to check out our Facebook Group and our forum at Free Stomp Boxes.
Giant Green Lemon – Building Docs
Giant Green Lemon – Drilling template
1 review for Giant Green Lemon
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atravisfields (verified owner) –
Pretty fun build, but it has some unfortunate issues.
First is the use of the 1p12t rotary switch in the middle. I order my parts from stompboxparts for the sake of simplicity and the only rotary switch of this kind on there is both too large to be used with their short-leg pots and too small to be used with their long-leg pots. To get around this, I had to order solder lug pots and soldered a short wire to each lug, but although this fixed the height problem, it would expose another issue. If I could offer a solution, I would suggest modifying the circuit to use either a 1p8t or 2p4t MINI rotary switch, which seem to be closer in height to their short-leg pots.
Second, when every component is soldered in, the circuit becomes too deep to fit in the 1590BB enclosure specified in the documentation, as the back side of the PCB now peeks out of the back of the enclosure. This required a third order from stompboxparts for a 1590XX enclosure which does fit. However, since the 1590XX is larger, the enclosure drilling template is slightly too small, so you have to eyeball the proper location for it such that the holes end up centered. This could easily be corrected by changing the documentation. Overall, I had pretty high expectations for this, but I think I’ll stick with my regular Green Lemon.