Aion Electronics ANTIPODE User manual

ANTIPODE VINTAGE FUZZ 1
PROJECT NAME
ANTIPODE
BASED ON
EFFECT TYPE
PROJECT SUMMARY
DOCUMENT VERSION
Roland AF-60 Bee Gee
While the circuit is best known as the “Jet” stage from the Roland AP-7 Jet Phaser, the standalone pedal
version is much more flexible with a wider tonal palette to play with.
Fuzz/Distortion 1.0.0 (2019-11-28)
BUILD DIFFICULTY
Easy
Actual size is 2.3” x 1.86” (main board) and 1.78” x 0.86” (bypass board).

ANTIPODE VINTAGE FUZZ 2
TABLE OF CONTENTS
1Project Overview 7Enclosure Layout
2Introduction & Usage 8Wiring Diagram
3-4 Parts List 9Licensing
5Schematic 9Document Revisions
6Drill Template
INTRODUCTION
The Antipode Vintage Fuzz is an adaptation of the Roland AF-60 Bee Gee, a fuzz/distortion from 1975
that is best known as the standalone version of the “jet mode” of the legendary AP-7 Jet Phaser.
It features a combination of transistor gain, op-amp gain and diode-based hard clipping to get its
character. The tone control is the classic Big Muff “balance” style, centered around 1.3Khz with a very
slight mid-boost in the middle position.
The Jet Phaser’s adaptation is largely the same but with fewer controls. The output volume control is
retained for the fuzz stage, but the tone control is simplified into a two-position switch with only “full
bass” and “full treble” settings. The potentiometer on the AF-60 is much more usable.
The Antipode project has one modification, which is the addition of a gain control to allow the distortion
level to be dialed back. In the original, the op-amp gain was fixed at 220, but with this control it can now
get as low as 2, getting down into overdrive territory instead of full-on fuzz. With the gain control at
maximum, the circuit is 100% identical to a vintage AF-60.
USAGE
The Antipode has the following controls:
• Distortion is a gain control. When set to maximum, it’s equivalent to the stock AF-60.
• Tone pans between a bass boost on one side and treble boost on the other, with a very slight mid-
hump in the center position.
• Volume is the master output volume control.

ANTIPODE VINTAGE FUZZ 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 (most 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
R1 100k Metal film resistor, 1/4W
R2 15k Metal film resistor, 1/4W
R3 220k Metal film resistor, 1/4W
R4 470k Metal film resistor, 1/4W
R5 470k Metal film resistor, 1/4W
R6 15k Metal film resistor, 1/4W
R7 1k Metal film resistor, 1/4W
R8 10k Metal film resistor, 1/4W
R9 10k Metal film resistor, 1/4W
R10 10k Metal film resistor, 1/4W
R11 2M2 Metal film resistor, 1/4W
R12 10k Metal film resistor, 1/4W
R13 33k Metal film resistor, 1/4W
R14 33k Metal film resistor, 1/4W
R15 1M Metal film resistor, 1/4W
R16 100k Metal film resistor, 1/4W
R17 56k Metal film resistor, 1/4W
R18 15k Metal film resistor, 1/4W
R19 6k8 Metal film resistor, 1/4W
R20 22k Metal film resistor, 1/4W
R21 22k Metal film resistor, 1/4W
LEDR 4k7 Metal film resistor, 1/4W LED current-limiting resistor. Adjust value to change LED brightness.
C1 22n Film capacitor, 7.2 x 2.5mm
C2 10uF Electrolytic capacitor, 5mm
C3 10uF Electrolytic capacitor, 5mm
C4 10n Film capacitor, 7.2 x 2.5mm
C5 10uF Electrolytic capacitor, 5mm
C6 270pF MLCC capacitor, NP0/C0G Original is 250pF, but 220pf is the nearest readily-available value.
C7 47n Film capacitor, 7.2 x 2.5mm
C8 2n2 Film capacitor, 7.2 x 2.5mm

ANTIPODE VINTAGE FUZZ 4
PARTS LIST, CONT.
PART VALUE TYPE NOTES
C9 1n Film capacitor, 7.2 x 2.5mm
C10 47n Film capacitor, 7.2 x 2.5mm
C11 1uF Film capacitor, 7.2 x 3.5mm
C12 47n Film capacitor, 7.2 x 2.5mm
C13 100uF Electrolytic capacitor, 6.3mm Power supply filter capacitor.
C14 47uF Electrolytic capacitor, 5mm Reference voltage filter capacitor.
C15 100n MLCC capacitor, X7R Power supply filter capacitor.
D1 1N5817 Schottky diode, DO-41
D2 1N914 Fast-switching diode, DO-35
D3 1N914 Fast-switching diode, DO-35
Q1 2N3904 BJT transistor, NPN, TO-92 Substitute. Original uses 2SC1000GR.
Q2 2N3904 BJT transistor, NPN, TO-92 Substitute. Original uses 2SC1000GR.
IC1 LM741 Operational amplifier, DIP8 Original uses TA7504, but LM741 is an equivalent.
IC1-S DIP-8 socket IC socket, DIP-8
DIST. 1MC 16mm right-angle PCB mount pot
TONE 100kB 16mm right-angle PCB mount pot
LEVEL 50kA 16mm right-angle PCB mount pot
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.

SCHEMATIC
ANTIPODE VINTAGE FUZZ 5
1N5817
100uF
GND
+9V
100n
VA
50kA
1MC
100kB
100k
15k
GND
22n
220k
470k 470k
GND
10uF
GND
2N3904
GND
15k
10uF
GND
1k
VA
10n
10k
10k
10k
2M2
250pF
10k
47n
1N914
1N914
GND GND
2n2
33k
1n
33k
GND
GND
GND
22k
22k
10uF
GND GND
VB
LM741
VA
GND
VB
47n
2N3904
1uF
1M
100k
VA
56k
6k8
GND GND
15k
VA
47n
VB
10uF
D1
C13
IN
OUT
C15
LEVEL
1
2
3
DISTORTION
1
2
3
TONE
1
2
3
R1
R2
C1
R3
R4 R5
C2
Q1
R6
C3
R7
C4
R8
R9
R10
R11
C6
R12
C7
D2 D3
C8
R13
C9
R14
R20
R21
C14
5
1
2
3
6
8
74
IC1
C10
Q2
C11
R15
R16R17
R19 R18
C12
C5
GND

ANTIPODE VINTAGE FUZZ 6
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.
0 1 2
CM
0 1
INCH
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
LEVEL
TONE
DISTORTION
FOOTSWITCHLED

ANTIPODE VINTAGE FUZZ 7
ENCLOSURE LAYOUT
Enclosure is shown without jacks. See next page for jack layout and wiring.
125B

ANTIPODE VINTAGE FUZZ 8
WIRING DIAGRAM
125B
IN +VGND N.C. N.C. OUT
PCB
IN
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.

ANTIPODE VINTAGE FUZZ 9
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 cannot be 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 (2019-11-28)
Initial release.