Enclosure not stated · 4 knobs

Korg MS50 Filter

Based on the Korg MS50 Filter· 1 other board clones it

Category: EQ / Filter· Filters Wahs and VCFs
Controls: Cutoff Freq · Peak · Lo Cut · Intensity
Price: see vendor
Tags: Filters Wahs and VCFs

Open the schematic at Experimentalists Anonymous

Schematic

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Parts list 86 rows

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Check before you build · 2 values the reader of this schematic was not sure of

R28: hand-written '310k', designator 'R2?' (could be 510K)
×1 160K: hand-added resistor, faint

Ref	Value	Normalized	Type	Notes
Resistors 44
R7	360K	360k		read from the schematic by eye
R28	310K	310k		hand-added, designator written R2? (likely R28); value could be 510K; read from the schematic by eye
R44	220K	220k		read from the schematic by eye
R45	1.8K	1.8k		read from the schematic by eye
R46	100	100		read from the schematic by eye
R47	100	100		read from the schematic by eye
R48	2.7K	2.7k		read from the schematic by eye
R49	100	100		read from the schematic by eye
R50	2.2K	2.2k		read from the schematic by eye
R51	47	47		read from the schematic by eye
R52	47K	47k		read from the schematic by eye
R53	4.3K	4.3k		read from the schematic by eye
R54	47K	47k		read from the schematic by eye
R55	10K	10k		read from the schematic by eye
R56	1K	1k		read from the schematic by eye
R57	1M	1M		read from the schematic by eye
R58	6.8K	6.8k		read from the schematic by eye
R59	100K	100k		read from the schematic by eye
R60	43K	43k		read from the schematic by eye
R61	47K	47k		read from the schematic by eye
R62	180K	180k		read from the schematic by eye
R63	22K	22k		read from the schematic by eye
R64	13K	13k		read from the schematic by eye
R65	560	560		read from the schematic by eye
R66	560	560		read from the schematic by eye
R67	100K	100k		read from the schematic by eye
R68	1M	1M		read from the schematic by eye
R69	47K	47k		read from the schematic by eye
R70	22K	22k		read from the schematic by eye
R71	100K	100k		drawn in an ellipse (special/matched part?); read from the schematic by eye
R72	47K	47k		read from the schematic by eye
R73	47K	47k		read from the schematic by eye
R75	22K	22k		read from the schematic by eye
R76	68K	68k		read from the schematic by eye
R77	43K	43k		read from the schematic by eye
R78	100K	100k		drawn in an ellipse (special/matched part?); read from the schematic by eye
R79	180K	180k		read from the schematic by eye
R80	100K	100k		read from the schematic by eye
R81	4.7K	4.7k		read from the schematic by eye
R82	1K	1k		read from the schematic by eye
R83	10K	10k		read from the schematic by eye
R84	3.3K	3.3k		read from the schematic by eye
R85	100K	100k		read from the schematic by eye
×1	160K	160k		hand-added resistor marked with a triangle, from R52/IC6b+ to ground; read from the schematic by eye
Capacitors 16
C9	0.0047uF	4.7n		read from the schematic by eye
C10	0.0047uF	4.7n		read from the schematic by eye
C11	0.022uF	22n		read from the schematic by eye
C12	0.022uF	22n		read from the schematic by eye
C13	0.022uF	22n		read from the schematic by eye
C14	10uF	10u		16V; read from the schematic by eye
C15	0.0027uF	2.7n		read from the schematic by eye
C16	100uF	100u		3V tantalum; read from the schematic by eye
C17	10uF	10u		16V; read from the schematic by eye
C18	0.1uF	100n		read from the schematic by eye
C19	10uF	10u		16V tantalum; read from the schematic by eye
C20	10uF	10u		16V tantalum; read from the schematic by eye
C21	10uF	10u		16V tantalum; read from the schematic by eye
C22	10uF	10u		16V; read from the schematic by eye
C23	0.0068uF	6.8n		read from the schematic by eye
C52	220P	220p		read from the schematic by eye
Diodes 10
D5	Diode	DIODE		no part number given; read from the schematic by eye
D6	Diode	DIODE		no part number given; read from the schematic by eye
D7	Diode	DIODE		no part number given; read from the schematic by eye
D8	Diode	DIODE		no part number given; read from the schematic by eye
D9	Diode	DIODE		no part number given; read from the schematic by eye
D10	Diode	DIODE		no part number given; read from the schematic by eye
D11	Diode	DIODE		no part number given; read from the schematic by eye
D12	Diode	DIODE		no part number given; read from the schematic by eye
D26	Diode	DIODE		no part number given; read from the schematic by eye
D28	Diode	DIODE		no part number given; read from the schematic by eye
ICs 8
IC4	TL071	TL071		legend: f TL071; read from the schematic by eye
IC5	CA3019	CA3019		diode array; read from the schematic by eye
IC6	4558	4558		sections b; legend a~e 1/2 4558; read from the schematic by eye
IC7	4558	4558		both sections drawn 'a'; read from the schematic by eye
IC8	CA3019	CA3019		diode array; read from the schematic by eye
IC9	4558	4558		sections e; read from the schematic by eye
IC10	4558	4558		sections c; read from the schematic by eye
IC11	4558	4558		sections d; read from the schematic by eye
Potentiometers 4
Cutoff Freq	B100K	B100k	Potentiometer	VR12, drawn 100KB; read from the schematic by eye
Peak	B10K	B10k	Potentiometer	VR10, drawn 10KB; read from the schematic by eye
Lo Cut	C1M	C1M	Potentiometer	VR14, drawn 1MC; read from the schematic by eye
Intensity	A100K	A100k	Potentiometer	VR15, drawn 100KA; read from the schematic by eye
Trimmers 4
VR8	B100K	100k		fc adjust, drawn 100KB; read from the schematic by eye
VR9	10K	10k		read from the schematic by eye
VR13	10K	10k		read from the schematic by eye
×1	33K	33k		undesignated trimmer in series with R28; read from the schematic by eye

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