Akashic Guitar effects circuit lookup

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Experimentalists Anonymous

Ibanez Graphic EQ

Based on the Ibanez Graphic EQ

Category
EQ / Filter· Tone Control and EQs
Price
see vendor
Tags
Tone Control and EQs
Open the schematic at Experimentalists Anonymous

Schematic

The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.

Parts list 109 rows

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Check before you build · 8 values the reader of this schematic was not sure of
  • R2: drawn 8K, could be 6.8K or 8.2K
  • R34: drawn 66K, probably 68K
  • R48: designator and value blotted; read 1K
  • R49: designator blotted; 10K
  • Q8: designator blotted
  • Q2/Q3: legend 2SK118(O) vs drawn 2SK44
  • 63Hz-5.0KHz: 20K(G) printed only at VR1
  • Level: no value printed
RefValueNormalizedTypeNotes
Resistors 49
R11K1kread from the schematic by eye
R28K8kcould be 6.8K or 8.2K; drawn 8K; read from the schematic by eye
R3100K100kread from the schematic by eye
R43K3kread from the schematic by eye
R53K3kread from the schematic by eye
R6510K510kread from the schematic by eye
R7470470read from the schematic by eye
R810K10kread from the schematic by eye
R9510K510kread from the schematic by eye
R10510K510kread from the schematic by eye
R11510K510kread from the schematic by eye
R1210K10kread from the schematic by eye
R1310K10kread from the schematic by eye
R14120K120kread from the schematic by eye
R15330330read from the schematic by eye
R16120K120kread from the schematic by eye
R17330330read from the schematic by eye
R18120K120kread from the schematic by eye
R19330330read from the schematic by eye
R20120K120kread from the schematic by eye
R21330330read from the schematic by eye
R22120K120kread from the schematic by eye
R23330330read from the schematic by eye
R24120K120kread from the schematic by eye
R25330330read from the schematic by eye
R26120K120kread from the schematic by eye
R27330330read from the schematic by eye
R28470470read from the schematic by eye
R291M1Mread from the schematic by eye
R3022K22kread from the schematic by eye
R311M1Mread from the schematic by eye
R3210K10kread from the schematic by eye
R3356K56kread from the schematic by eye
R3466K66kdrawn 66K, probably 68K; read from the schematic by eye
R352222read from the schematic by eye
R3622K22kread from the schematic by eye
R371M1Mread from the schematic by eye
R3862K62kread from the schematic by eye
R39100100read from the schematic by eye
R403.3K3.3kread from the schematic by eye
R411M1Mread from the schematic by eye
R4210K10kread from the schematic by eye
R4310K10kread from the schematic by eye
R44510K510kread from the schematic by eye
R45100K100kread from the schematic by eye
R4622K22kread from the schematic by eye
R479.1K9.1kread from the schematic by eye
R481K1kdesignator illegible (blotted); base resistor of Q8, value could be 1K or 1M; read from the schematic by eye
R4910K10kdesignator illegible (blotted); emitter resistor of Q8; read from the schematic by eye
Capacitors 32
C10.1uF100nfilm; read from the schematic by eye
C210uF10uelectrolytic 16V; read from the schematic by eye
C3100pF100pceramic; read from the schematic by eye
C40.1uF100nfilm; read from the schematic by eye
C50.1uF100nfilm; read from the schematic by eye
C610uF10uelectrolytic 16V; read from the schematic by eye
C70.1uF100nfilm; read from the schematic by eye
C810uF10uelectrolytic 16V; read from the schematic by eye
C90.033uF33nfilm; read from the schematic by eye
C104.7uF4.7utantalum 16V; read from the schematic by eye
C110.018uF18nfilm; read from the schematic by eye
C122.2uF2.2utantalum 16V; read from the schematic by eye
C130.0068uF6.8nfilm; read from the schematic by eye
C141.5uF1.5utantalum 16V; read from the schematic by eye
C150.0039uF3.9nfilm; read from the schematic by eye
C160.68uF680ntantalum 16V; read from the schematic by eye
C170.0018uF1.8nfilm; read from the schematic by eye
C180.33uF330ntantalum 35V; read from the schematic by eye
C19820pF820pfilm; read from the schematic by eye
C200.15uF150ntantalum 35V; read from the schematic by eye
C21390pF390pfilm; read from the schematic by eye
C220.068uF68nfilm; read from the schematic by eye
C2322uF22unon-polar electrolytic 16V; read from the schematic by eye
C240.047uF47nfilm; read from the schematic by eye
C250.047uF47nfilm; read from the schematic by eye
C261000pF1nceramic; read from the schematic by eye
C271000pF1nceramic; read from the schematic by eye
C281000pF1nceramic; read from the schematic by eye
C29100uF100uelectrolytic 16V; read from the schematic by eye
C3047uF47uelectrolytic 6.3V; read from the schematic by eye
C3110uF10uelectrolytic 16V; read from the schematic by eye
C3210uF10uelectrolytic 16V; read from the schematic by eye
Diodes 5
D11S15881S1588read from the schematic by eye
D21S15881S1588read from the schematic by eye
D31S15881S1588read from the schematic by eye
D4RD5.1EBRD5.1EBzener; drawing reads RD5.IEB; read from the schematic by eye
D5W03CW03Cpolarity protection; read from the schematic by eye
Transistors 8
Q12SC2458GR2SC2458GRdrawn 2SC2458; read from the schematic by eye
Q22SK118(O)2SK118(O)JFET; legend gives 2SK118(O), drawing labels 2SK44 P; read from the schematic by eye
Q32SK118(O)2SK118(O)JFET; legend gives 2SK118(O), drawing labels 2SK44SP; read from the schematic by eye
Q42SC2458GR2SC2458GRread from the schematic by eye
Q52SC2458GR2SC2458GRread from the schematic by eye
Q62SC2458GR2SC2458GRread from the schematic by eye
Q72SC2458GR2SC2458GRread from the schematic by eye
Q82SC2458GR2SC2458GRdesignator blotted, read as Q8; read from the schematic by eye
ICs 4
IC1NJM4558DNJM4558Ddual op amp; read from the schematic by eye
IC2NJM4558DNJM4558Ddual op amp; read from the schematic by eye
IC3NJM4558DNJM4558Ddual op amp; read from the schematic by eye
IC4NJM4558DNJM4558Ddual op amp; read from the schematic by eye
Potentiometers 8
63Hz20K20kPotentiometerVR1 slider; 20K(G) printed at VR1 only, G = center-detent/special taper; read from the schematic by eye
125Hz20K20kPotentiometerVR2 slider; 20K(G) printed at VR1 only, G = center-detent/special taper; read from the schematic by eye
250Hz20K20kPotentiometerVR3 slider; 20K(G) printed at VR1 only, G = center-detent/special taper; read from the schematic by eye
500Hz20K20kPotentiometerVR4 slider; 20K(G) printed at VR1 only, G = center-detent/special taper; read from the schematic by eye
1.0KHz20K20kPotentiometerVR5 slider; 20K(G) printed at VR1 only, G = center-detent/special taper; read from the schematic by eye
2.2KHz20K20kPotentiometerVR6 slider; 20K(G) printed at VR1 only, G = center-detent/special taper; read from the schematic by eye
5.0KHz20K20kPotentiometerVR7 slider; 20K(G) printed at VR1 only, G = center-detent/special taper; read from the schematic by eye
Level20K20kPotentiometerVR8; value not printed, assumed same 20K(G) as the band sliders; read from the schematic by eye
LEDs 1
D6TLR124TLR124indicator; read from the schematic by eye
Other 2
CR1NO.1NO.1CR network in LFO; read from the schematic by eye
CR2NO.1NO.1CR network in LFO; read from the schematic by eye