Enclosure not stated · 6 knobs

1991

Based on the Funny Little Boxes 1991· 2 other boards clone it

Schematic

The schematic image is on the project page. Open it at PCBWay.

Ref	Value	Normalized	Type	Notes
Resistors 9
×3	470k	470k		read from the schematic by eye
×3	4k7	4.7k		read from the schematic by eye
×3	10k	10k		read from the schematic by eye
×2	47k	47k		read from the schematic by eye
×2	33k	33k		read from the schematic by eye
×2	1k	1k		read from the schematic by eye
×1	1M	1M		read from the schematic by eye
×1	5k6	5.6k		read from the schematic by eye
×1	100	100		read from the schematic by eye
Capacitors 9
×1	22n	22n		read from the schematic by eye
×4	1u	1u		read from the schematic by eye
×1	47n	47n		read from the schematic by eye
×2	51p	51p		read from the schematic by eye
×4	15n	15n		read from the schematic by eye
×1	680p	680p		read from the schematic by eye
×1	100u	100u		read from the schematic by eye
×1	100n	100n		read from the schematic by eye
×1	47u	47u		read from the schematic by eye
Diodes 2
×2	1N4148	1N4148		read from the schematic by eye
×1	1N5817	1N5817		read from the schematic by eye
ICs 1
×2	JRC4558D	JRC4558D		four sections drawn: two dual chips; read from the schematic by eye
Potentiometers 6
Gain 1	B100k	B100k	Potentiometer	read from the schematic by eye
Gain 2	A500k	A500k	Potentiometer	read from the schematic by eye
Treble	A100k	A100k	Potentiometer	read from the schematic by eye
Bass	A1M	A1M	Potentiometer	read from the schematic by eye
Mids	B25k	B25k	Potentiometer	read from the schematic by eye
Volume	A100k	A100k	Potentiometer	read from the schematic by eye