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Ibanez WH-10 Wah

Based on the Ibanez WH10· 1 other board clones it

Category: Wah / Envelope
Controls: Freq · Depth
Price: see vendor

Read the post at Revolution Deux Schematic image

From the vendor

The Ibanez WH-10 factory schematic (Hoshino Gakki, 1993). Unlike a Cry Baby it is inductorless: a dual op-amp state-variable style band-pass filter swept by the treadle pot, with a Gtr/Bass range switch, a JFET switching circuit and a separate tuner output buffer. The post says the treadle pot is a standard linear 50K and points to Dirk Hendrik's project file laid out for a Crybaby shell.

The treadle pot (VR1) is a standard linear 50K (B50K).

Schematic

The schematic is in the post. Open it at Revolution Deux. No KiCad fragment has been drawn for this circuit yet.

Parts list 48 rows

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Check before you build · 1 value the reader of this schematic was not sure of

Two resistors are labeled R5 on the drawing: R5 100K on the tuner output and R5 1K on the main output; both are listed as drawn.

Ref	Value	Normalized	Type	Notes
Resistors 24
R1	10K	10k		read from the schematic by eye
R2	330K	330k		read from the schematic by eye
R3	100K	100k		read from the schematic by eye
R4	1K	1k		tuner out; read from the schematic by eye
R5	100K	100k		tuner out; read from the schematic by eye
R5	1K	1k		output; duplicate designator on the drawing; read from the schematic by eye
R7	1M	1M		read from the schematic by eye
R8	1K	1k		LED resistor; read from the schematic by eye
R9	100K	100k		read from the schematic by eye
R10	22K	22k		read from the schematic by eye
R11	10K	10k		read from the schematic by eye
R12	22K	22k		read from the schematic by eye
R13	6.8K	6.8k		read from the schematic by eye
R14	15K	15k		read from the schematic by eye
R15	100K	100k		read from the schematic by eye
R16	10K	10k		read from the schematic by eye
R17	47K	47k		read from the schematic by eye
R18	1.8K	1.8k		read from the schematic by eye
R19	10K	10k		read from the schematic by eye
R20	1K	1k		read from the schematic by eye
R21	15K	15k		read from the schematic by eye
R22	1K	1k		read from the schematic by eye
R23	1K	1k		read from the schematic by eye
R24	1K	1k		read from the schematic by eye
Capacitors 12
C1	100n	100n		read from the schematic by eye
C2	220u	220u		electrolytic; read from the schematic by eye
C3	47u	47u		electrolytic; read from the schematic by eye
C4	2.2u	2.2u		electrolytic; read from the schematic by eye
C5	2.2u	2.2u		electrolytic; read from the schematic by eye
C6	4.7n	4.7n		read from the schematic by eye
C7	2.2u	2.2u		electrolytic; read from the schematic by eye
C8	10n	10n		read from the schematic by eye
C9	3.3n	3.3n		read from the schematic by eye
C10	2.2n	2.2n		read from the schematic by eye
C11	220p	220p		read from the schematic by eye
C12	220p	220p		read from the schematic by eye
Diodes 3
D1	W03C	W03C		polarity protection; read from the schematic by eye
D2	1S1588	1S1588		read from the schematic by eye
D4	RD4.7E	RD4.7E		4.7V zener; read from the schematic by eye
Transistors 4
Q1	2SC1815	2SC1815		read from the schematic by eye
Q2	2SK30A	2SK30A		JFET switch; read from the schematic by eye
Q3	2SA1015	2SA1015		read from the schematic by eye
Q4	2SC1815	2SC1815		read from the schematic by eye
ICs 1
IC1	NJM4558	NJM4558		or LM358; read from the schematic by eye
Potentiometers 2
Freq	B50K	B50k	Potentiometer	VR1, treadle; the post says standard linear 50K; read from the schematic by eye
Depth	C10K	C10k	Potentiometer	VR2, drawn 10KC; read from the schematic by eye
Switches 1
Gtr/Bass	SPST	SPST		S2; read from the schematic by eye
LEDs 1
D3	TLR102	TLR102		read from the schematic by eye

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