Akashic Guitar effects PCB lookup
BASSBOOSTDRIVEGAINBIAS

1590BB · 5 knobs

PCB Guitar Mania

Giant Green Lemon

Based on the Dunwich DA120

Category
Overdrive· Pre-Amp Overdrive
Controls
Bass · Boost · Drive · Gain · Bias
Difficulty
Advanced
Price
€14.90out of stock

Heads up Builders widely report inconsistent quality from PCB Guitar Mania boards, and whether a given board works is a gamble. Read recent forum reports before ordering.

From the vendor

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

Schematic

The schematic is in the vendor's build document, page 5. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 75 rows

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RefValueNormalizedTypeNotes
Resistors 32
R110m10M
R21m1M
R32k72.7k
R42k72.7k
R533k33k
R61m1M
R72k72.7k
R82k72.7k
R9100k100k
R1027k27k
R11100k100k
R121m1M
R132k72.7k
R142k72.7k
R15100k100k
R1610k10k
R1710k10k
R18220k220k
R19220k220k
R20470k470k
R21470k470k
R223k33.3k
R235k15.1k
R243k33.3k
R25100k100k
R26330r330
R271k1k
R28100k100k
R2962k62k
R30100k100k
R314k74.7k
R321m1M
Capacitors 27
C21n1n
C4100n100n
C5100n100n
C610n10n
C82n22.2n
C9330p330p
C10100n100n
C11100n100n
C13100n100n
C14100n100n
C15470p470p
C16150n150n
C178n28.2n
C182n22.2n
C194n74.7n
C2010n10n
C2122n22n
C22100n100n
C27100n100n
C347u47u
C747u47u
C1247u47u
C2347u47u
C2447u47u
C2510u10u
C2647u47u
C1100n100n
Diodes 4
D19.1v9.1V
D29.1v9.1V
D39v19V1
D41n58171N5817
Transistors 4
Q1BS170BS170
Q2BS170BS170
Q3BS170BS170
Q4BS170BS170
ICs 2
IC1TL074TL074
IC2LTC1144LTC1144
Potentiometers 5
BASS1MAA1MPotentiometer
BOOST5KBB5kPotentiometer
DRIVE1KBB1kPotentiometer
GAIN1MAA1MPotentiometer
BIAS100K100kPotentiometer
Switches 1
SW11P12T1P12T