Akashic Guitar effects circuit lookup
THRESHQ CONTROLPEDALTREBLE

Enclosure not stated · 4 knobs

Experimentalists Anonymous

Electro Harmonix Queen Triggered Wah

Based on the Electro-Harmonix Queen Triggered Wah

Category
Wah / Envelope· Filters Wahs and VCFs
Controls
Thresh · Q Control · Pedal · Treble
Price
see vendor
Tags
Filters Wahs and VCFs
Open the schematic at Experimentalists Anonymous

Schematic

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

Parts list 95 rows

Report a wrong parse

Got parts in a drawer? See what you can build with them.

Check before you build · 5 values the reader of this schematic was not sure of
  • R25: 27K or 29K
  • R42: 22K or 28K
  • R34: designator could be R39 (duplicates the 27K R39)
  • C18: 2.2uF or 3.3uF NP
  • C14: designator read C19 or C14
RefValueNormalizedTypeNotes
Resistors 47
R143K43kread from the schematic by eye
R22.7K2.7kread from the schematic by eye
R32.7K2.7kread from the schematic by eye
R41K1kread from the schematic by eye
R5470Ω470read from the schematic by eye
R62.7K2.7kread from the schematic by eye
R72.7K2.7kread from the schematic by eye
R84.7K4.7kread from the schematic by eye
R94.7K4.7kread from the schematic by eye
R104.7K4.7kread from the schematic by eye
R1110K10kread from the schematic by eye
R12470Ω470read from the schematic by eye
R1322Ω22read from the schematic by eye
R14160K160kacross Q1 drain-source; read from the schematic by eye
R162.7K2.7kread from the schematic by eye
R174.7K4.7kread from the schematic by eye
R18470Ω470read from the schematic by eye
R1922Ω22read from the schematic by eye
R20160K160kacross Q2 drain-source; read from the schematic by eye
R214.7M4.7Mread from the schematic by eye
R2243K43kacross the LP/BP switch contacts; read from the schematic by eye
R233.3K3.3kread from the schematic by eye
R2443K43kread from the schematic by eye
R2527K27kcould be 29K; read from the schematic by eye
R2643K43kread from the schematic by eye
R27100K100kread from the schematic by eye
R2822K22kread from the schematic by eye
R2910K10kread from the schematic by eye
R3043K43kread from the schematic by eye
R316.8K6.8kread from the schematic by eye
R3222K22kread from the schematic by eye
R33470K470kread from the schematic by eye
R342.7K2.7klabel could be R39 (R39 is also used for the 27K); Range High leg; read from the schematic by eye
R35160K160kacross Q3 drain-source; read from the schematic by eye
R376.8K6.8kacross the Pedal pot; read from the schematic by eye
R3815K15kread from the schematic by eye
R3927K27kread from the schematic by eye
R401.2K1.2kread from the schematic by eye
R411M1Mread from the schematic by eye
R4222K22kcould be 28K; read from the schematic by eye
R4347Ω47read from the schematic by eye
R44750Ω750read from the schematic by eye
R4543K43kread from the schematic by eye
R46120Ω120read from the schematic by eye
R474.7K4.7kread from the schematic by eye
R4822M22Mread from the schematic by eye
R4922M22Mread from the schematic by eye
Capacitors 21
C1.047uF47nread from the schematic by eye
C2.0047uF4.7nread from the schematic by eye
C3.01uF10nread from the schematic by eye
C4.0022uF2.2nread from the schematic by eye
C5.1uF100nread from the schematic by eye
C64.7uF4.7uelectrolytic; read from the schematic by eye
C7.0022uF2.2nread from the schematic by eye
C81uF1utantalum; read from the schematic by eye
C94.7uF4.7uread from the schematic by eye
C10.004uF4nread from the schematic by eye
C1110uF10uelectrolytic; read from the schematic by eye
C1210uF10uelectrolytic; read from the schematic by eye
C13.1uF100nread from the schematic by eye
C144.7uF4.7uelectrolytic; label read as C19/C14; read from the schematic by eye
C15100uF100uelectrolytic, supply; read from the schematic by eye
C1610uF10uelectrolytic; read from the schematic by eye
C171uF1utantalum; read from the schematic by eye
C182.2uF2.2unon-polar; could be 3.3uF; read from the schematic by eye
C20.1uF100nread from the schematic by eye
C21.1uF100nread from the schematic by eye
×31uF1uthree 1uF tantalums in parallel (drawn '3x1uf TAN'), envelope filter at R32/R31, no designator; read from the schematic by eye
Diodes 10
D1DiodeDIODEno part number given; read from the schematic by eye
D2DiodeDIODEno part number given; read from the schematic by eye
D3DiodeDIODEno part number given; read from the schematic by eye
D4DiodeDIODEno part number given; read from the schematic by eye
D5DiodeDIODEno part number given; read from the schematic by eye
D6DiodeDIODEno part number given; read from the schematic by eye
D7DiodeDIODEno part number given; read from the schematic by eye
D8DiodeDIODEno part number given; read from the schematic by eye
D9DiodeDIODEno part number given; in Q4 collector; read from the schematic by eye
D10DiodeDIODEno part number given; read from the schematic by eye
Transistors 4
Q1??FET used as variable resistor (S/D/G), no part number; read from the schematic by eye
Q2??FET used as variable resistor (S/D/G), no part number; read from the schematic by eye
Q3??FET used as variable resistor (S/D/G), no part number; read from the schematic by eye
Q4??NPN supply regulator transistor, no part number; read from the schematic by eye
ICs 4
A??dual op amp (A1 pins 1-3, A2 pins 5-7; pin 8 V+, 4 ground), no part number; read from the schematic by eye
B??dual op amp (B1, B2), no part number; read from the schematic by eye
C??dual op amp (C1, C2), no part number; read from the schematic by eye
D??quad op amp/comparator (D1-D4, pins up to 14; D1 drawn as an op amp, not the diode D1), no part number; read from the schematic by eye
Potentiometers 4
Thresh10K10kPotentiometerR51; read from the schematic by eye
Q Control100K100kPotentiometerR15; read from the schematic by eye
Pedal100K100kPotentiometerR36, treadle pot; read from the schematic by eye
Treble10K10kPotentiometerR50; read from the schematic by eye
Switches 5
BassSPSTSPSTshorts C2; read from the schematic by eye
AutoSPSTSPSTAuto Sw; read from the schematic by eye
Range HighSPSTSPSTread from the schematic by eye
Range LowSPSTSPSTread from the schematic by eye
LP/BPSPDTSPDTLP/BP foot switch; read from the schematic by eye