Akashic Guitar effects circuit lookup
SPEEDWIDTHFEEDBACK

Enclosure not stated · 3 knobs

Experimentalists Anonymous

Ibanez PT909

Based on the Ibanez PT909

Category
Phaser· Phasers
Controls
Speed · Width · Feedback
Price
see vendor
Tags
Phasers
Open the schematic at Experimentalists Anonymous

Schematic

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ocr read from an image · sch paired from the schematic · fixed corrected by hand. Check marked values against the build document.

Check before you build · 2 values the reader of this schematic was not sure of
  • R127: drawn 2.4K with a faint decimal point; could be 24K
  • Q105: legend reads 2SK44SP (perhaps 2SK44)
RefValueNormalizedTypeNotes
Resistors 51
R1011K1kread from the schematic by eye
R102510K510kread from the schematic by eye
R10310K10kread from the schematic by eye
R104150K150kread from the schematic by eye
R105100K100kread from the schematic by eye
R10630K30kread from the schematic by eye
R10710K10kread from the schematic by eye
R10810K10kread from the schematic by eye
R109150K150kread from the schematic by eye
R110100K100kread from the schematic by eye
R11130K30kread from the schematic by eye
R11210K10kread from the schematic by eye
R11310K10kread from the schematic by eye
R11410K10kread from the schematic by eye
R115150K150kread from the schematic by eye
R11630K30kread from the schematic by eye
R117100K100kread from the schematic by eye
R11810K10kread from the schematic by eye
R11910K10kread from the schematic by eye
R120150K150kread from the schematic by eye
R12130K30kread from the schematic by eye
R122100K100kread from the schematic by eye
R12310K10kread from the schematic by eye
R124100K100kread from the schematic by eye
R125200K200kread from the schematic by eye
R126240K240kread from the schematic by eye
R1272.4K2.4kdecimal point faint; could be 24K; read from the schematic by eye
R12882K82kread from the schematic by eye
R12922K22kread from the schematic by eye
R130100K100kread from the schematic by eye
R131100K100kread from the schematic by eye
R13210K10kread from the schematic by eye
R13322K22kread from the schematic by eye
R1344.7K4.7kread from the schematic by eye
R13510K10kread from the schematic by eye
R13610K10kread from the schematic by eye
R137470470read from the schematic by eye
R13810K10kread from the schematic by eye
R1391M1Mread from the schematic by eye
R1401M1Mread from the schematic by eye
R141510510read from the schematic by eye
R14256K56kread from the schematic by eye
R14356K56kread from the schematic by eye
R144100100read from the schematic by eye
R1452222read from the schematic by eye
R1461M1Mread from the schematic by eye
R14722K22kread from the schematic by eye
R14862K62kread from the schematic by eye
R14956K56kread from the schematic by eye
R15056K56kread from the schematic by eye
R1511K1kread from the schematic by eye
Capacitors 24
C1010.1uF100nmylar; read from the schematic by eye
C1020.047uF47nceramic; read from the schematic by eye
C1030.047uF47nceramic; read from the schematic by eye
C1040.047uF47nceramic; read from the schematic by eye
C1050.047uF47nceramic; read from the schematic by eye
C106100Pfixed100pmylar; read from the schematic by eye
C1070.047uF47nceramic; read from the schematic by eye
C1080.047uF47nceramic; read from the schematic by eye
C1090.047uF47nceramic; read from the schematic by eye
C1100.047uF47nceramic; read from the schematic by eye
C1111uF1unon-polar electrolytic, 50V; read from the schematic by eye
C1120.47uF470nelectrolytic, 35V; read from the schematic by eye
C11347uF47uelectrolytic 10V; C113/C114 back to back (47/10 x2); read from the schematic by eye
C11447uF47uelectrolytic 10V; C113/C114 back to back (47/10 x2); read from the schematic by eye
C1150.01uF10nmylar; drawn Q01; read from the schematic by eye
C1161uF1unon-polar electrolytic, 50V; read from the schematic by eye
C117100pF100pceramic; read from the schematic by eye
C11810uF10uelectrolytic, 16V; read from the schematic by eye
C1190.1uF100nmylar; read from the schematic by eye
C1200.1uF100nmylar; read from the schematic by eye
C1210.047uF47nceramic; read from the schematic by eye
C1221000pF1nceramic; read from the schematic by eye
C1231000pF1nceramic; read from the schematic by eye
C1241000pF1nceramic; read from the schematic by eye
Diodes 5
D101MA150MA150read from the schematic by eye
D102MA150MA150read from the schematic by eye
D103RD5.6EBRD5.6EB5.6V zener; read from the schematic by eye
D1041N5231B1N5231B / 5V15.1V zener; read from the schematic by eye
D105W03CW03Cpolarity protection; read from the schematic by eye
Transistors 8
Q1012SK30AY2SK30AYJFET, selected; read from the schematic by eye
Q1022SK30AY2SK30AYJFET, selected; read from the schematic by eye
Q1032SK30AY2SK30AYJFET, selected; read from the schematic by eye
Q1042SK30AY2SK30AYJFET, selected; read from the schematic by eye
Q1052SK44SP2SK44SPJFET; read from the schematic by eye
Q1062SC536SP2SC536SPNPN; read from the schematic by eye
Q1072SC536SP2SC536SPNPN; read from the schematic by eye
Q1082SC536SP2SC536SPNPN; read from the schematic by eye
ICs 4
IC101MC1458MC1458dual op amp; read from the schematic by eye
IC102MC1458MC1458dual op amp; read from the schematic by eye
IC103MC1458MC1458dual op amp; read from the schematic by eye
IC104MC1458MC1458dual op amp; read from the schematic by eye
Potentiometers 3
SpeedC500KC500kPotentiometerC taper; read from the schematic by eye
WidthB100KB100kPotentiometerread from the schematic by eye
FeedbackB10KB10kPotentiometerfront-panel feedback, drawn 10KB; read from the schematic by eye
Trimmers 2
VR101100K100kbias; read from the schematic by eye
VR10210K10kfeedback trim; read from the schematic by eye
LEDs 1
D106LN21CPSLLN21CPSLindicator, on module MP-AD1002A; read from the schematic by eye
Other 2
CR1NO.1NO.1CR network (capacitor-resistor composite) in LFO; read from the schematic by eye
CR2NO.1NO.1CR network (capacitor-resistor composite) in LFO; read from the schematic by eye