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BASSBOOSTGAINTREBVOL

125B · 5 knobs

PCB Guitar Mania

Green Lemon

Based on the Green Matamp GT120MV· 1 other board clones it

Category
Fuzz· Overdrive- preamp
Controls
Bass · Boost · Gain · Treb · Vol
Difficulty
Advanced
Price
€9.90out of stock
Tags
diy-originals

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

The fuzziest and thickest pre-amp you always wanted, now in a pedal format. Inspired by Green amplifiers, the Green lemon is Green as the leaves that inspired the most famous stoner riffs. Do you dare to try this blasting beast of doom?

Introduction

Green amps are the holy grail of Dopesmoker’s tones and a must on every doom-stoner player. These amplifiers are well known for their brutally thick fuzz tones and growling bass; however, it’s almost impossible for you to get to plug your ax of doom into one of these heads as they are as expensive as rare.

With the Green Lemon, we wanted to fix this by making this fantastic circuit available for everyone in the DIY world by designing a JFET version of this tremendous pre-amp keeping the tone and the main structure

and functionality of the original tube amplifier.

The signal path follows the same order, featuring a Baxandall tone stack between the gain stages delivering its massive trademark sound.

If you love these JFET doomy pre-amp stompboxes, don’t forget to check out our Lemon Rockverb, Black Sun of Doom, and our JM 1800 (add links to each). You will be blown away by the jawbreaking power of these circuits. Only available on DIY format… for now!

You can also check the SMD version that comes with most resistors and capacitors already soldered on board as SMD components, making it the best and easiest to build PCBs ever.

Controls

• Bass

• Boost

• Gain

• Treb

• Vol

For any technical questions regarding this build, don’t forget to check out our Facebook Group and our forum at Free Stomp Boxes.

Green Lemon – Building Docs

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 44 rows

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RefValueNormalizedTypeNotes
Resistors 17
R168k68k
R21m1M
R3220k220k
R42k22.2k
R5100k100k
R62k22.2k
R7100k100k
R822k22k
R9100k100k
R10220k220k
R112k22.2k
R121k51.5k
R1315k15k
R141k1k
R1515k15k
R1615k15k
R174k74.7k
Capacitors 17
C347u47u
C9100u100u
C1022u22u
C17100u100u
C268n68n
C468n68n
C5330p330p
C62n22.2n
C722n22n
C82n22.2n
C111n1n
C1268n68n
C1368n68n
C1468n68n
C152n22.2n
C162n22.2n
C147u47u
Diodes 1
D11n58171N5817
Transistors 4
Q12N5457*2N5457
Q22N54572N5457
Q3J201*J201
Q4J201*J201
Potentiometers 5
BASS1MAA1MPotentiometer
BOOST1KBB1kPotentiometer
GAIN1MAA1MPotentiometer
TREB1MAA1MPotentiometer
VOL100KAA100kPotentiometer

Other boards based on the Green Matamp GT120MV