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GAINLEVELTONE

1590BB · 3 knobs

PCB Guitar Mania

Proton Nucleus

Based on the Protein Dual Overdrive

Category
Overdrive· Dual Overdrive
Controls
Gain · Level · Tone
Difficulty
High
Price
€14.90out of stock

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From the vendor

Project overview

Inspired by the two-in-one Protein Dual Overdrive. Two classic drives, the OD and the “Nashville” ODR-1 stacked together with some well-thought modifications to make them shine in a nuclear fusion of gritness.

Our Proton Nucleus adds an order switch for you to experiment with the effect order of both pedals. We also made independent boards for each side; check the Proton Green and Proton Blue if you want to have them as separate pedals that can fit in a convenient 125b enclosure.

Introduction

The Protein Dual Overdrive is a collaboration between David Brown and guitarist/producer Adam Sniegowski. The fusion of these two great minds was like a nuclear reaction that collided into a dual overdrive that can sound amazing independently of the backline it encounters!

When making the Protein, Dave set out to improve the boards without losing the soul of the originals:

The Blue Side is based on the classic OD used by the likes of John Mayer on the “Continuum” album. Dave increased the output, tweaked the tone control, and experimented until ending up with the best version of this type of circuit while still being true to its roots.

The “Nashville” ODR-1 overdrive inspired the Green Side. “Nashville” is another classic used on the pedals boards of session greats from Tim Pierce to Jerry McPherson. Dave lowered the amount of gain (distortion) to make it usable through the entire sweep of the pedal, added some of the mids back to make it not entirely scooped, and eliminated some of the woofiness in the low end. This allows it to add some low mid “beef” back into your tone without becoming muddy.

The real magic happens when stacking them together. Start trying the original set, the Green Side into the Blue Side, to get added gain and fullness without sacrificing note clarity or getting that “mushiness” that can happen while stacking some overdrives. Try the other way around to get even more possibilities than the original.

Two great-improved classics and an additional order switch to make them shine together in every possible way; Proton Nucleus is much more than your average 2-in-1 overdrive pedal!

Controls

Potentiometers

• Drive1

• Gain

• Level

• Level2

• Tone

• Tone2

Switches

• Order-Switch1

Video demos

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

Proton Nucleus – Building Docs

Proton Nucleus – Drilling template

Schematic

The schematic is in the vendor's build document, page 7. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 105 rows

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RefValueNormalizedTypeNotes
Resistors 48
R554k74.7k
R5610k10k
R16k86.8k
R57220k220k
R215k15k
R586k86.8k
R315k15k
R591k1k
R433k33k
R606k86.8k
R51M1M
R61100k100k
R63k33.3k
R6210k10k
R733k33k
R631M1M
R81k81.8k
R641M1M
R9820r820
R652k42.4k
R101k51.5k
R666k86.8k
R11470r470
R1210k10k
R1312k12k
R1443k43k
R1512k12k
R165k15.1k
R1743k43k
R181k21.2k
R1920k20k
R2015k15k
R2110k10k
R224k74.7k
R2322k22k
R245k15.1k
R251k21.2k
R26150k150k
R272k22.2k
R28150k150k
R292k22.2k
R301M1M
R496k86.8k
R5047k47k
R5147k47k
R522M22.2M
R531M1M
R543k33.3k
Capacitors 38
C4610n10n
C4710n10n
C481u1u
C1100u100u
C2100u100u
C102u22.2u
C112u22.2u
C201u1u
C212u22.2u
C221u1u
C233u33.3u
C39100u100u
C3100n100n
C40100u100u
C4100p100p
C4910u10u
C5100n100n
C504u74.7u
C6100p100p
C7120p120p
C882n82n
C9470n470n
C122n72.7n
C1382n82n
C141n1n
C1522n22n
C16560p560p
C178n28.2n
C184n74.7n
C1982n82n
C24100n100n
C2527n27n
C268n28.2n
C4147n47n
C4256p56p
C4310n10n
C4410n10n
C45220n220n
Diodes 9
D151N41481N4148
D11N58171N5817
D21N41481N4148
D31N41481N4148
D41N41481N4148
D51N41481N4148
D121N41481N4148
D131N41481N4148
D141N41481N4148
Transistors 2
Q12N54572N5457
Q22N50882N5088
ICs 4
IC1JRC4558DJRC4558D
IC2JRC4558DJRC4558D
IC5TL072TL072
IC6TL071TL071
Potentiometers 3
GAINA100KA100kPotentiometer
LEVELA50KA50kPotentiometer
TONEB25KB25kPotentiometer
LEDs 1
LED23mm3MM