Enclosure not stated · 3 knobs

DOD FX25B

Based on the DOD FX25B

Category: Other· Filters Wahs and VCFs
Controls: Range · Sensitivity · Blend
Price: see vendor
Tags: Filters Wahs and VCFs

Open the schematic at Experimentalists Anonymous

Schematic

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Parts list 74 rows

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

C18: drawn '4.7K' on a polarized cap, read as 4.7uF

Ref	Value	Normalized	Type	Notes
Resistors 38
R1	10K	10k		read from the schematic by eye
R2	470K	470k		input bias to Vbias. Designator clash: R2 also drawn as the 1M footswitch pull-up; read from the schematic by eye
R2	1M	1M		footswitch pull-up to VCC; clash with the 470K R2; read from the schematic by eye
R3	22K	22k		read from the schematic by eye
R4	22K	22k		read from the schematic by eye
R5	20K	20k		read from the schematic by eye
R6	100K	100k		after C3. Designator clash: R6 also drawn as the 100K at Q1; read from the schematic by eye
R6	100K	100k		Q1 drain to Vbias; clash with the other R6; read from the schematic by eye
R7	100K	100k		read from the schematic by eye
R8	1K	1k		read from the schematic by eye
R9	100K	100k		read from the schematic by eye
R11	1K	1k		read from the schematic by eye
R12	10K	10k		read from the schematic by eye
R13	1K	1k		read from the schematic by eye
R14	10K	10k		read from the schematic by eye
R15	22K	22k		read from the schematic by eye
R16	22K	22k		read from the schematic by eye
R17	1K	1k		read from the schematic by eye
R18	1K	1k		read from the schematic by eye
R19	10K	10k		read from the schematic by eye
R20	22K	22k		read from the schematic by eye
R21	22K	22k		read from the schematic by eye
R22	220K	220k		read from the schematic by eye
R23	100K	100k		read from the schematic by eye
R25	1M	1M		read from the schematic by eye
R26	100K	100k		read from the schematic by eye
R27	10K	10k		read from the schematic by eye
R28	220K	220k		read from the schematic by eye
R29	10K	10k		read from the schematic by eye
R30	1M	1M		read from the schematic by eye
R31	1M	1M		read from the schematic by eye
R32	4.7K	4.7k		read from the schematic by eye
R33	150K	150k		read from the schematic by eye
R34	51	51		read from the schematic by eye
R35	10K	10k		read from the schematic by eye
R38	100K	100k		read from the schematic by eye
R39	10K	10k		read from the schematic by eye
R40	1M	1M		read from the schematic by eye
Capacitors 17
C1	0.01uF	10n		read from the schematic by eye
C2	10uF	10u		electrolytic; read from the schematic by eye
C3	1uF	1u		electrolytic; read from the schematic by eye
C4	1uF	1u		electrolytic; read from the schematic by eye
C5	330u	330u		electrolytic; read from the schematic by eye
C7	1uF	1u		electrolytic; read from the schematic by eye
C8	.01uF	10n		read from the schematic by eye
C10	.05uF	50n		read from the schematic by eye
C11	15uF	15u		electrolytic; read from the schematic by eye
C13	.001uF	1n		read from the schematic by eye
C14	0.1uF	100n		read from the schematic by eye
C15	.05uF	50n		read from the schematic by eye
C16	1uF	1u		electrolytic; read from the schematic by eye
C17	100pF	100p		read from the schematic by eye
C18	4.7uF	4.7u		electrolytic; value drawn '4.7K', read as 4.7uF; read from the schematic by eye
C20	10uF	10u		electrolytic; read from the schematic by eye
C21	1uF	1u		electrolytic; read from the schematic by eye
Diodes 6
D1	1N4148	1N4148		read from the schematic by eye
D2	1N4148	1N4148		read from the schematic by eye
D3	1N4001	1N4001		read from the schematic by eye
D4	1N4148	1N4148		read from the schematic by eye
D5	1N4148	1N4148		read from the schematic by eye
D7	1N4148	1N4148		read from the schematic by eye
Transistors 5
Q1	J201	J201		JFET; read from the schematic by eye
Q2	J113	J113		JFET; read from the schematic by eye
Q3	2N5088	2N5088		read from the schematic by eye
Q4	2N5088	2N5088		read from the schematic by eye
Q6	J201	J201		JFET; read from the schematic by eye
ICs 4
U1	JRC4560	JRC4560		dual op amp; read from the schematic by eye
U2	13600	13600		LM13600 dual OTA; the four Q? NPN darlington buffers drawn beside it are part of the chip; read from the schematic by eye
U3	4007	4007		CD4007 footswitch flip-flop; read from the schematic by eye
U4	TL072	TL072		dual op amp; read from the schematic by eye
Potentiometers 3
Range	100K	100k	Potentiometer	P1; read from the schematic by eye
Sensitivity	500K	500k	Potentiometer	P2; read from the schematic by eye
Blend	100K	100k	Potentiometer	P3; read from the schematic by eye
LEDs 1
D6	LED	LED		read from the schematic by eye