Akashic Guitar effects circuit lookup
DRIVETONEVOLUME

1590B · 3 knobs

Aion FX

Meteor (Legacy)

Based on the Ibanez SD-9 Sonic Distortion· 9 other boards clone it

Category
Distortion
Controls
Drive · Tone · Volume
Difficulty
Easy
Price
see vendor
Buy the PCB at Aion FX Build document

From the vendor

The Meteor Distortion project is a clone of the Maxon/Ibanez Sonic Distortion, which first hit stores in around 1983. Advertised as a heavier Tube Screamer, in reality it shares nothing at all in common with the classic TS-9 circuit. It has more similarities to hard-clipping circuits such as the BOSS DS-1 or MXR Distortion+.

This project is for the original SD-9, but features one of the two mods from the SD-9M, the “Mids” switch. (The second SD-9M mod, the gain switch, is not backwards-compatible with this circuit.) The second switch on this PCB allows you to switch between different sets of clipping diodes.

Schematic

The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 43 rows

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RefValueNormalizedTypeNotes
Resistors 18
R11k1k
R2510k510k
R310k10k
R4100k100k
R533k33k
R6470R470
R72k22.2k
R86k86.8k
R92k22.2k
R106k86.8k
R111k1k
R1210k10k
R131M1M
R1410k10k
R15470R470
R16100k100k
R1722k22k
R1822k22k
Capacitors 13
C147n47n
C247n47n
C31n1n
C4220n220n
C5470n470n
C610n10n
C733n33n
C827n27n
C9100n100n
C101uF1u
C11100uF100u
C1247uF47u
C1310uF10u
Diodes 3
D21N9141N914
D31N9141N914
D11N40021N4002
Transistors 2
Q12N50882N5088
Q22N50882N5088
ICs 1
IC1JRC4558DJRC4558D
Potentiometers 3
DRIVE250KBB250kPotentiometer
TONE25KBB25kPotentiometer
VOLUME100KBB100kPotentiometer
LEDs 3
D43mm LED3MM LED
D53mm LED3MM LED
LED1intoINTO

Other boards based on the Ibanez SD-9 Sonic Distortion