1590B · 4 knobs

Laureate Jr

Based on the Nobels ODR-1· 4 other boards clone it

Schematic

The schematic is in the vendor's build document, page 12. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Ref	Value	Normalized	Type
Resistors 29
R1	33k	33k
R2	1M	1M
R3	3k3	3.3k
R4	2k7	2.7k
R5	10k	10k
R6	1k8	1.8k
R7	820R	820
R8	1k5	1.5k
R9	2k2	2.2k
R10	12k	12k
R11	39k	39k
R12	12k	12k
R13	10k	10k
R14	5k1	5.1k
R15	1k2	1.2k
R16	150k	150k
R17	2k2	2.2k
R18	3k3	3.3k
R19	43k	43k
R20	20k	20k
R21	10k	10k
R22	4k7	4.7k
R23	5k1	5.1k
R24	22k	22k
R25	1k2	1.2k
R26	150k	150k
R27	150k	150k
R28	15k	15k
R29	15k	15k
Capacitors 26
C1	68n	68n
C2	22n	22n
C3	120pF	120p
C4	82n	82n
C5	220n	220n
C6	2u2	2.2u
C7	220n	220n
C8	2u2	2.2u
C9	2n7	2.7n
C10	82n	82n
C11	1n	1n
C12	22n	22n
C13	27n	27n
C14	100n	100n
C15	8n2	8.2n
C16	560pF	560p
C17	8n2	8.2n
C18	4n7	4.7n
C19	82n	82n
C20	1uF	1u
C21	2u2	2.2u
C22	1uF	1u
C23	2u2	2.2u
C24	100uF	100u
C25	100n	100n
C26	100uF	100u
Diodes 5
D1	1n914	1N914
D2	1n914	1N914
D3	1n914	1N914
D4	1n914	1N914
D5	1n5817	1N5817
Transistors 2
Q1	2n5457	2N5457
Q2	2N5088	2N5088
ICs 2
IC1	4558	4558
IC2	4558	4558
Potentiometers 4
SPEC	25KB	B25k	Potentiometer
TRIM	25KB	B25k	Potentiometer
VOL	50KA	A50k	Potentiometer
GAIN	250KA	A250k	Potentiometer