Akashic Guitar effects circuit lookup
TREBLEOUTPUTGAIN

1590B · 3 knobs

Aion FX

Refractor (Legacy)

Based on the Klon Centaur· 49 other boards clone it

Category
Overdrive
Controls
Treble · Output · Gain
Difficulty
Intermediate
Price
see vendor
Buy the PCB at Aion FX Build document Build Documentation (V1) pdf

From the vendor

A part-for-part replica of a mythical overdrive effect noted for its high-end tone and price.

The Refractor project is a straight-up clone of the Klon Centaur and Klon KTR. The goal in designing this PCB was space efficiency: there’s no shortage of Centaur clones that fit in larger enclosures, but ours was made for the 1590B (1290NS)—though it’s just as much at home in a 125B if that’s your style.

One perennially tricky thing about building a Centaur clone is wiring the bypass switch. Due to its unique buffered bypass arrangement, for most clones you have to solder three resistors to the switch itself and it can be time-consuming. To compensate for this, we’ve designed a bypass board that fits standard 3PDT switches and has spaces for all three resistors. From there, all you need to do is run four wires from the bypass PCB directly to the main PCB and you’re done. It’s available separately as the Refractor Bypass.

Schematic

The schematic is in the vendor's build document, page 4. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 64 rows

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Variant
RefValueNormalizedTypeNotes
Resistors 29
R110k10k
R21M1M
R3100k100k
R4560R560
R55k15.1k
R610k10k
R71k51.5k
R81k51.5k
R91k1k
R102k2k
R1115k15k
R12422k422k
R131k1k
R1522k22k
R1647k47k
R1727k27k
R1812k12k
R1915k15k
R20392k392k
R211k81.8k
R22100k100k
R234k74.7k
R24100k100k
R25560R560
R2668k68k
R2768k68k
R28100k100k
R2927k27k
R3027k27k
Capacitors 22
C1100n100n
C24u74.7uelec
C3100n100n
C468n68n
C568n68n
C6390n390n
C782n82n
C8390pF390p
C91uF1u
C101uF1u
C112n22.2n
C1227n27n
C13820pF820p
C143n93.9n
C154u74.7uelec
C161uF1u
C1747uF47uelec
C1847uF47uelec
C191uF1uelec
C201uF1uelec
C211uF1uelec
C221uF1uelec
Diodes 6
D1GeGE
D2GeGE
D31N40021N4002
D41N40021N4002
Z11N47421N4742 / 12V
D9EdiodesDIODES
ICs 3
IC1TL072TL072
IC2TL072TL072
IC3TC1044SCPATC1044SCPA
Potentiometers 3
TREBLE10KBB10kPotentiometer
OUTPUT10KBB10kPotentiometer
GAIN100KBB100kPotentiometer
LEDs 1
LED1intoINTO

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