Akronym Bass Overdrive

Based on the EQD Blumes

From the vendor

Controls

• Level

• Tone

• Gain

• Clipping (toggle switch) – (Symmetrical LED / None / Asymmetical Silicon)

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 15
R1	1M	1M	Resistor, 1/4W
R2	1K	1k	Resistor, 1/4W
R3	10M	10M	Resistor, 1/4W
R4	10K	10k	Resistor, 1/4W
R5	47K	47k	Resistor, 1/4W
R6	2K7	2.7k	Resistor, 1/4W
R7	1K	1k	Resistor, 1/4W
R8	10K	10k	Resistor, 1/4W
R9	330R	330	Resistor, 1/4W
R10	1K	1k	Resistor, 1/4W
R11	1K	1k	Resistor, 1/4W
R12	1M	1M	Resistor, 1/4W
R13	100R	100	Resistor, 1/4W
R14	100K	100k	Resistor, 1/4W
R100	4K7	4.7k	Resistor, 1/4W	* LED current limiting resistor
Capacitors 14
C1	22n	22n	Film capacitor, 7.2 x 2.5mm
C2	1u	1u	Film capacitor, 7.2 x 5.0mm
C3	56p	56p	Ceramic capacitor
C4	1u	1u	Film capacitor, 7.2 x 5.0mm
C5	22n	22n	Film capacitor, 7.2 x 2.5mm
C6	560n	560n	Film capacitor, 7.2 x 5.0mm
C7	56p	56p	Ceramic capacitor
C8	1u	1u	Film capacitor, 7.2 x 5.0mm
C9	1u	1u	Film capacitor, 7.2 x 5.0mm
C10	10u	10u	Electrolytic capacitor, 5mm
C11	100p	100p	Ceramic capacitor
C100	10u	10u	Electrolytic capacitor, 5mm
C101	10u	10u	Electrolytic capacitor, 5mm
C102	100u	100u	Electrolytic capacitor, 5mm
Diodes 6
D1	RED	RED	3mm Red LED, Diffused
D2	RED	RED	3mm Red LED, Diffused
D3	1N4148	1N4148	Signal diode, DO-35
D4	1N4148	1N4148	Signal diode, DO-35
D5	1N4148	1N4148	Signal diode, DO-35
D100	1N5817	1N5817	Schottky diode, DO-41
ICs 3
IC1	TL072	TL072	Dual op-amp, DIP8
IC2	TL072	TL072	Dual op-amp, DIP8
IC100	TC1044SCPA	TC1044SCPA	Charge pump IC, DIP8
Potentiometers 3
LEVEL	B100K	B100k	16mm right-angle PCB mount pot
TONE	W20K	W20k	16mm right-angle PCB mount pot
GAIN	A1M	A1M	16mm right-angle PCB mount pot
Switches 1
MODE	ON/OFF/ON	ON/OFF/ON	Toggle switch, SPDT	3-position (ON/OFF/ON)