Aion HADRON Manual de usuario

HADRON DYNAMIC OVERDRIVE 1

PROJECT NAME

HADRON

BASED ON

EFFECT TYPE

PROJECT SUMMARY

DOCUMENT VERSION

Lovepedal Eternity

An early entry in the minimalist Tube Screamer category, this was one of the circuits that kicked off the

hand-built boutique pedal industry.

Overdrive 1.0.0 (2019-08-04)

BUILD DIFFICULTY

Beginner

Actual size is 2.3” x 1.86” (main board) and 1.79” x 0.86” (bypass board).

HADRON DYNAMIC OVERDRIVE 2

TABLE OF CONTENTS

1Project Overview 7Drill Template

2Introduction & Usage 8Enclosure Layout

3-4 Parts List 9Wiring Diagram

5Build Notes 10 Licensing

6Schematic 10 Document Revisions

INTRODUCTION

The Hadron Dynamic Overdrive is a recreation of the Lovepedal Eternity, first released in 2005. There

have been several versions of the Eternity throughout the years, with names like Burst, Fuse, Kanji,

D-Mod, and Roadhouse. However, they all have the same basic circuit. The provided parts list is based

on the original Eternity, but you should be able to build almost any version if you know what changes

to make. The differences are typically only in the component values used and the number of clipping

diodes.

Like the Zendrive, the Eternity can be seen as a stripped-down Tube Screamer, based on the original

1997 “Son of Screamer” circuit by Jack Orman. It’s essentially a Tube Screamer without input & output

buffers. This makes it interact better with a guitar’s volume & tone knobs, but on the flip side it also

interacts with the pedals that come before & after.

Alongside the Azimuth, the Hadron has among the lowest parts count of any Aion FX project and is a

very good starting point for new builders.

USAGE

The Hadron has the following controls:

• Drive controls the amount of gain in the op-amp feedback diode clipping stage.

• Tone controls the treble response of the effect. The center point (12:00) is flat. When turned to the

left, it cuts treble, and when turned to the right, it boosts treble.

• Volume controls the overall output.

HADRON DYNAMIC OVERDRIVE 3

PARTS LIST

This parts list is also available in a spreadsheet format which can be imported directly into Mouser for

easy parts ordering. Mouser doesn’t carry all the parts—notably potentiometers—so the second tab lists

all the non-Mouser parts as well as sources for each.

View parts list spreadsheet →

PART VALUE TYPE NOTES

C1 47n Film capacitor, 7.2 x 2.5mm

C2 220n Film capacitor, 7.2 x 2.5mm

C3 OMIT MLCC capacitor, NP0/C0G Omit for base version of Eternity. 47-100pF is used for some variants.

C4 150n Film capacitor, 7.2 x 2.5mm

C5 150n Film capacitor, 7.2 x 2.5mm Use 220n for Burst version.

C6 1uF Film capacitor, 7.2 x 3.5mm

C7 100uF Electrolytic capacitor, 6.3mm

C8 47uF Electrolytic capacitor, 5mm

C9 100n MLCC capacitor, X7R

R1 1M Metal film resistor, 1/4W

R2 1M Metal film resistor, 1/4W

R3 1k Metal film resistor, 1/4W

R4 10k Metal film resistor, 1/4W

R5 1k Metal film resistor, 1/4W

R6 470R Metal film resistor, 1/4W Use 330R for Burst version.

R7 1k Metal film resistor, 1/4W

R8 10k Metal film resistor, 1/4W

R9 10k Metal film resistor, 1/4W

R10 330R Metal film resistor, 1/4W

LEDR 4k7 Metal film resistor, 1/4W

D1 1N5817 Schottky diode, DO-41

D2 JUMPER Fast-switching diode, DO-35 Jumper for base Eternity version. 1N914 for Burst version.

D3 1N914 Fast-switching diode, DO-35

D4 1N914 Fast-switching diode, DO-35

D5 1N914 Fast-switching diode, DO-35

IC1 LM833N Operational amplifier, DIP8 Exact IC is unknown. See build notes.

IC1-S DIP-8 socket IC socket, DIP-8

HADRON DYNAMIC OVERDRIVE 4

PARTS LIST, CONT.

PART VALUE TYPE NOTES

DRIVE 100kB Potentiometer, 16mm right-angle Use 500kB for Burst version.

TONE 5kB Potentiometer, 16mm right-angle

VOL 100kA Potentiometer, 16mm right-angle Use 500kA for Burst version.

LED 5mm LED, 5mm, red diffused

IN 1/4" stereo 1/4" phone jack, closed frame Switchcraft 112BX or equivalent.

OUT 1/4" mono 1/4" phone jack, closed frame Switchcraft 111X or equivalent.

DC 2.1mm DC jack, 2.1mm panel mount Mouser 163-4302-E or equivalent.

BATT Battery snap 9V battery snap Optional. Use the soft plastic type—the hard-shell type will not fit.

FSW 3PDT Stomp switch, 3PDT

ENC 125B Enclosure, die-cast aluminum Can also use a Hammond 1590N1.

HADRON DYNAMIC OVERDRIVE 5

BUILD NOTES

Variants

The Eternity has dozens of variations, many of which were given names such as Burst, Kanji, Roadhouse,

D-Mod, etc., but most of which were not named at all and just sold as the Eternity.

The parts list in this project comes from an early version of the original Eternity that was traced in 2007,

which Sean from Lovepedal verified as being a “V3”.

The Eternity Burst can be built by changing out the following parts:

C5: 150n →220n

R6: 470R →330R

D2: jumper →1N914

Drive: 100kB →500kB

Some variants also had 20k for R4 (which sets the minimum drive level), 1MB for the Drive control

(which increases max available gain at the expense of fine-tuning at lower gain settings), or 2kB for the

Tone control.

IC selection

The exact IC is not known since the markings are sanded off in original units. However, based on

reviewing the photos and comparing the physical IC package, the consensus in the DIY community

is that the original Eternity used either an LM833 or LM1458, with others suggesting the LF353 as

another possibility.

Early versions of the Eternity shipped with an additional TL072 (unsanded) so the player could swap it

out if they wanted. Chip-swapping in the Eternity became something of a cottage industry in the early

years after its release. Forum discussions were endless, and there were even people on eBay selling

packs of alternate Eternity chips. It’s not idle speculation, either—it’s a simple enough circuit that chip

selection really does make a difference in tone.

Any dual op-amp will work here, so feel free to experiment. Others have had great luck with the

NE5532, OPA2604, NJM2043DD (marked as JRC2043DD), and NJM4560D (marked as JRC4560D), or

TLC2262.

According to the manufacturer, other variants of the Eternity used different op-amps. All of them

were sanded down, so nothing is known for sure beyond that, but it’s possible that several of the above

suggestions were used “officially” at one point.

Power supply resistor

The 330R resistor in series with the power supply will drop the voltage to the pedal and is part of the key

to the sound. Some variants of the Eternity used 390R here. However, due to the slight ~0.2V voltage

drop from D1 that was not present in the original, it’s recommended to stick with 330R.

SCHEMATIC

HADRON DYNAMIC OVERDRIVE 6

GND

1N5817

100uF

GND

+9V

100n

100kA

100kB

5kB

LM833N

47n

OMIT

10k

220n

150n

LM833N

150n

470R

GND

1uF

GND

10k

GND

47uF

GND

1N914

BYP_GND

330R

OUT

VOLUME

DRIVE

TONE

IC1A

D2 D3

IC1B

D4D5

R10

HADRON DYNAMIC OVERDRIVE 7

DRILL TEMPLATE

Cut out this drill template, fold the edges and tape it to the enclosure. Before drilling, it’s recommended

to first use a center punch for each of the holes to help guide the drill bit.

Ensure that this template is printed at 100% or “Actual Size”. You can double-check this by measuring

the scale on the printed page.

Top jack layout assumes the use of closed-frame jacks like the Switchcraft 111X. If you’d rather use

open-frame jacks, please refer to the Open-Frame Jack Drill Template for the top side.

LED hole drill size assumes the use of a 5mm LED bezel, available from several parts suppliers. Adjust

size accordingly if using something different, such as a 3mm bezel, a plastic bezel, or just a plain LED.

x: -0.65, y: +1.71 x: 0.65, y: +1.71

ø9/32” ø9/32”

x: 0, y: +0.66

ø9/32”

x: 0, y: -1.20

ø15/32”

x: -0.775, y: -1.20

ø5/16”

CENTER (0,0)

ø3/8” ø1/2”

0.385”

0.625” 0.625”

ø3/8”

OUT DC IN

125B

VOLUME

TONE

DRIVE

FOOTSWITCHLED

0 1 2

0 1

INCH

HADRON DYNAMIC OVERDRIVE 8

ENCLOSURE LAYOUT

Enclosure is shown without jacks. See next page for jack layout and wiring.

125B

HADRON DYNAMIC OVERDRIVE 9

WIRING DIAGRAM

125B

IN +VGND N.C. N.C. OUT

PCB

GND +V +V JACK GND JACK

OUTIN

GND GND PCB

OUT

Shown with optional 9V battery. If battery is omitted, both jacks can be mono rather than one being stereo.

Leave the far-right lug of the DC jack unconnected.

HADRON DYNAMIC OVERDRIVE 10

LICENSE & USAGE

No direct support is offered for these projects beyond the provided documentation. It’s assumed

that you have at least some experience building pedals before starting one of these. Replacements and

refunds cannotbe offered unless it can be shown that the circuit or documentation are in error.

All of these circuits have been tested in good faith in their base configurations. However, not all the

modifications or variations have necessarily been tested. These are offered only as suggestions based

on the experience and opinions of others.

Projects may be used for commercial endeavors in any quantity unless specifically noted. No

attribution is necessary, though a link back is always greatly appreciated. The only usage restrictions

are that (1) you cannot resell the PCB as part of a kit without prior arrangement, and (2) you cannot

“goop” the circuit, scratch off the screenprint, or otherwise obfuscate the circuit to disguise its source.

(In other words: you don’t have to go out of your way to advertise the fact that you use these PCBs, but

please don’t go out of your way to hide it. The guitar effects industry needs more transparency, not less!)

DOCUMENT REVISIONS

1.0.0 (2019-08-04)

Initial release.

Este manual sirve para los siguientes modelos

Tabla de contenidos

Otros manuales de Equipo de música de aion

aion

aion LITHIUM Manual de usuario

aion

aion theseus Manual de usuario

aion

aion Nereus Manual de usuario

aion

aion TERMINA Manual de usuario

aion

aion LUMIN Manual de usuario

aion

aion VULCAN Manual de usuario

aion

aion Cinder Manual de usuario

aion

aion CORVUS Manual de usuario

aion

aion CYGNUS Manual de usuario

aion

aion Dryad Transparent Overdrive Manual de usuario

aion

aion EMBER Manual de usuario

aion

aion MAELSTROM Manual de usuario

aion

aion BINARY Manual de usuario

aion

aion ACHILLES Manual de usuario

aion

aion HELIOS Manual de usuario

aion

aion Silvanus Manual de usuario

aion

aion Heliosphere Manual de usuario

aion

aion PEPPERMILL Manual de usuario

aion

aion Cirrus Manual de usuario

aion

aion Blaze Manual de usuario

aion

aion Azimuth Manual de usuario

aion

aion ANDROMEDA DELUXE Manual de usuario

aion

aion HELIODOR AMP OVERDRIVE Manual de usuario

aion

aion Azimuth Manual de usuario

Manuales populares de Equipo de música de otras marcas

DAPAudio

DAPAudio IPS-PT Manual de usuario

Dynacord

Dynacord DPM 8016 Manual de usuario

Subdecay

Subdecay Starlight Flanger Manual de usuario

Moen

Moen GEC8 Live Manual de usuario

Fender

Fender 1 Manual de usuario

Yamaha

Yamaha MLC-16 Manual de usuario

Sonuscore

Sonuscore TIME TEXTURES Manual de usuario

flight of harmony

flight of harmony V'Amp Manual de usuario

NANO

NANO PERFORMANCE MIXER Manual de usuario

Tascam

Tascam CD-GT2 Manual de usuario

BHI

BHI NEIM 1031 MKII Manual de usuario

Befaco

Befaco KICKALL Manual de usuario

Paia

Paia 9720 Guía

limex

limex ALPIN MASTER 128 Manual de usuario

nord

nord Electro 3 Manual de usuario

Joemeek

Joemeek sixQ2 Manual de usuario

CARVIN

CARVIN 500W STEREO POWER MODULE - SCHEMA REV G Manual de usuario

Furutech

Furutech ADL GT40 Guía de instalación

aion HADRON Manual de usuario

Manuales populares de Equipo de música de otras marcas