Cast Iron Overdrive

Based on the Lollar Overdrive· 1 other board clones it

From the vendor

Controls

• Volume

• Gain

• Low

• Mid

• High

Specifications

• Designed for a 125B enclosure with top-mounted jacks

Documentation

The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Ref	Value	Normalized	Type	Notes
Resistors 17
R1	2M2	2.2M	Resistor, 1/4W
R2	510K	510k	Resistor, 1/4W
R3	3K3	3.3k	Resistor, 1/4W
R4	3K3	3.3k	Resistor, 1/4W
R5	1K5	1.5k	Resistor, 1/4W
R6	470K	470k	Resistor, 1/4W
R7	4K7	4.7k	Resistor, 1/4W
R8	470K	470k	Resistor, 1/4W
R9	4K7	4.7k	Resistor, 1/4W
R10	4K7	4.7k	Resistor, 1/4W
R11	4K7	4.7k	Resistor, 1/4W
R12	1K5	1.5k	Resistor, 1/4W
R13	3K3	3.3k	Resistor, 1/4W
R100	100R	100	Resistor, 1/4W
R101	8K2	8.2k	Resistor, 1/4W
R102	10K	10k	Resistor, 1/4W
CLR	4K7	4.7k	Resistor, 1/4W	* LED current limiting resistor
Capacitors 12
C1	47n	47n	Film capacitor, 7.2 x 2.5mm
C2	100p	100p	Ceramic capacitor
C3	33n	33n	Film capacitor, 7.2 x 2.5mm
C4	1u	1u	Film capacitor, 7.2 x 5.0mm
C5	10n	10n	Film capacitor, 7.2 x 2.5mm
C6	2n2	2.2n	Film capacitor, 7.2 x 2.5mm
C7	10n	10n	Film capacitor, 7.2 x 2.5mm
C8	1u	1u	Electrolytic capacitor, 5mm
C100	100u	100u	Electrolytic capacitor, 5mm
C101	100n	100n	Film capacitor, 7.2 x 2.5mm
C102	100n	100n	Film capacitor, 7.2 x 2.5mm
C103	47u	47u	Electrolytic capacitor, 5mm
Diodes 5
D1	1N4148	1N4148	Signal diode, DO-35
D2	1N4148	1N4148	Signal diode, DO-35
D3	1N4148	1N4148	Signal diode, DO-35
D4	1N4148	1N4148	Signal diode, DO-35
D100	1N5817	1N5817	Schottky diode, DO-41
ICs 2
IC1	RC4559	RC4559	Dual op-amp, DIP8
IC2	RC4559	RC4559	Dual op-amp, DIP8
Potentiometers 5
VOL	A10K	A10k	16mm right-angle PCB mount pot
GAIN	A1M	A1M	16mm right-angle PCB mount pot
LOW	C50K	C50k	16mm right-angle PCB mount pot
MID	B50K	B50k	16mm right-angle PCB mount pot
HIGH	C50K	C50k	16mm right-angle PCB mount pot