Enclosure not stated · 5 knobs

Nobels ODR-B Bass Overdrive

Based on the Nobels ODR-B - Bass Overdrive· 1 other board clones it

Category: Overdrive· Distortion Boost and Overdrive
Controls: Bass · Drive · Treble · Mid · Level
Price: see vendor
Tags: Distortion Boost and Overdrive

Open the schematic at Experimentalists Anonymous

Schematic

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Parts list 110 rows

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Ref	Value	Normalized	Type	Notes
Resistors 48
R1	33K	33k		read from the schematic by eye
R2	1M	1M		read from the schematic by eye
R3	3K9	3.9k		read from the schematic by eye
R4	330K	330k		read from the schematic by eye
R5	330K	330k		read from the schematic by eye
R6	200K	200k		read from the schematic by eye
R7	10K	10k		read from the schematic by eye
R10	2K7	2.7k		read from the schematic by eye
R11	10k	10k		read from the schematic by eye
R12	820	820		read from the schematic by eye
R13	1K5	1.5k		read from the schematic by eye
R14	1K8	1.8k		read from the schematic by eye
R20	12K	12k		read from the schematic by eye
R21	39K	39k		read from the schematic by eye
R22	12K	12k		read from the schematic by eye
R23	10K	10k		read from the schematic by eye
R24	43K	43k		read from the schematic by eye
R25	5K1	5.1k		read from the schematic by eye
R26	1K2	1.2k		read from the schematic by eye
R28	20K	20k		read from the schematic by eye
R29	2K2	2.2k		read from the schematic by eye
R30	150K	150k		read from the schematic by eye
R31	3K3	3.3k		read from the schematic by eye
R32	4K7	4.7k		read from the schematic by eye
R33	20K	20k		read from the schematic by eye
R34	7K5	7.5k		read from the schematic by eye
R35	3K3	3.3k		read from the schematic by eye
R36	510	510		read from the schematic by eye
R37	510	510		read from the schematic by eye
R38	120K	120k		read from the schematic by eye
R39	1K5	1.5k		read from the schematic by eye
R40	330K	330k		read from the schematic by eye
R41	330K	330k		read from the schematic by eye
R42	330K	330k		read from the schematic by eye
R43	150K	150k		read from the schematic by eye
R45	150K	150k		read from the schematic by eye
R101	470K	470k		read from the schematic by eye
R102	100K	100k		read from the schematic by eye
R103	100K	100k		read from the schematic by eye
R104	1M	1M		read from the schematic by eye
R105	1K5	1.5k		read from the schematic by eye
R107	1M	1M		read from the schematic by eye
R108	1M	1M		read from the schematic by eye
R109	1M	1M		read from the schematic by eye
R110	47K	47k		read from the schematic by eye
R201	10K	10k		read from the schematic by eye
R202	10K	10k		read from the schematic by eye
R203	100	100		read from the schematic by eye
Capacitors 37
C1	47N	47n		read from the schematic by eye
C2	1uF	1u		electrolytic; read from the schematic by eye
C3	68N	68n		read from the schematic by eye
C10	0.1uF	100n		read from the schematic by eye
C11	22N	22n		read from the schematic by eye
C12	82N	82n		read from the schematic by eye
C13	2.2uF	2.2u		electrolytic; read from the schematic by eye
C14	120P	120p		read from the schematic by eye
C20	2.2uF	2.2u		electrolytic; read from the schematic by eye
C21	2N7	2.7n		read from the schematic by eye
C22	82N	82n		read from the schematic by eye
C23	1N	1n		read from the schematic by eye
C24	22N	22n		read from the schematic by eye
C25	560P	560p		read from the schematic by eye
C26	82N	82n		read from the schematic by eye
C27	8N2	8.2n		read from the schematic by eye
C28	33N	33n		read from the schematic by eye
C30	2.2uF	2.2u		electrolytic; read from the schematic by eye
C31	8N2	8.2n		read from the schematic by eye
C32	1uF	1u		electrolytic; read from the schematic by eye
C33	220P	220p		read from the schematic by eye
C34	27N	27n		read from the schematic by eye
C35	33uF	33u		electrolytic; unit per sheet note 'unspecified capacitors in uF'; read from the schematic by eye
C36	22N	22n		read from the schematic by eye
C40	1uF	1u		electrolytic; read from the schematic by eye
C41	1uF	1u		electrolytic; read from the schematic by eye
C42	1uF	1u		electrolytic; read from the schematic by eye
C43	3.3uF	3.3u		electrolytic; read from the schematic by eye
C101	1N	1n		read from the schematic by eye
C102	10N	10n		read from the schematic by eye
C104	47N	47n		read from the schematic by eye
C105	47N	47n		read from the schematic by eye
C106	47N	47n		read from the schematic by eye
C201	220uF	220u		electrolytic; read from the schematic by eye
C202	100uF	100u		electrolytic; read from the schematic by eye
C203	47uF	47u		electrolytic; read from the schematic by eye
C204	220uF	220u		electrolytic; read from the schematic by eye
Diodes 9
D1	4148	4148		1N4148; read from the schematic by eye
D2	4148	4148		1N4148; read from the schematic by eye
D3	4148	4148		1N4148; read from the schematic by eye
D4	4148	4148		1N4148; read from the schematic by eye
D5	4148	4148		1N4148; read from the schematic by eye
D6	4148	4148		1N4148; read from the schematic by eye
D7	4148	4148		1N4148; read from the schematic by eye
D101	4148	4148		1N4148; read from the schematic by eye
D201	4001	4001		1N4001; reverse-polarity protection; read from the schematic by eye
Transistors 7
Q1	K222E	2SK222E		likely 2SK222E; read from the schematic by eye
Q2	C2362G	2SC2362G		likely 2SC2362G; read from the schematic by eye
Q3	C2362G	2SC2362G		likely 2SC2362G; read from the schematic by eye
Q4	K222E	2SK222E		likely 2SK222E; read from the schematic by eye
Q5	K222E	2SK222E		likely 2SK222E; read from the schematic by eye
Q6	K30A-Y	2SK30A-Y		likely 2SK30A-Y; read from the schematic by eye
Q7	K30A-Y	2SK30A-Y		likely 2SK30A-Y; read from the schematic by eye
ICs 3
U1	4558S	4558S		dual op amp, sections A and B; read from the schematic by eye
U2	4558S	4558S		dual op amp, sections A and B; read from the schematic by eye
U101	4007	4007		CD4007; bypass flip-flop logic; read from the schematic by eye
Potentiometers 5
Bass	C10K	C10k	Potentiometer	P31, drawn 'V12H 10KC' (C taper, likely center-detent); read from the schematic by eye
Drive	A500K	A500k	Potentiometer	P11, drawn 'V12H 500KA'; read from the schematic by eye
Treble	B50K	B50k	Potentiometer	P22, drawn 'V12H 50KB'; read from the schematic by eye
Mid	B50K	B50k	Potentiometer	P21, drawn 'V12H 50KB'; read from the schematic by eye
Level	A50K	A50k	Potentiometer	P41, drawn 'V12H 50KA'; read from the schematic by eye
LEDs 1
D102	LED	LED		green, low-current; read from the schematic by eye

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