Enclosure not stated · 8 knobs

Dunwich Amplification CTG (DIY version)

Based on the Dunwich Amplification CTG (DIY version)

Category: Boost
Controls: Dist A · Tone A · Volume A · Dist B · Tone B · Volume B · Tone C · Volume C
Build: Vero· 32×32· 68 cuts, 31 links
Layout: Unverified · no build reported at Dirtbox Layouts yet
Tags: Blend, Booster, Distortion, Dunwich Amplification, Overdrive

Open the layout at Dirtbox Layouts Schematic

From the post

Here we have a "little" monster layout for a DIY project that Dunwich Amplification just released at OSH Park. It is supposed to a emulate a part Al Cisneros of Sleep bass rig. It is basically three circuits in parallell, a DOD 250 Pre Amp, a Boss DS1 and a clean J FET boost with a James tonestack. Schematic and BOM can be downloaded HERE.

Schematic

This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.

Parts list 48 rows

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Check before you build · 2 values the reader of this layout was not sure of

250pF ceramic right of IC2 (rows W-Y): printed clearly, unusual value
Dist B / Tone B pot values: legend prints them as 'Dist 2: 100kB' and 'Tone 2: 25kB'; assumed to mean the B-channel pots

Ref	Value	Normalized	Type	Notes
Resistors 14
×6	1M	1M		read from the layout by eye
×13	10K	10k		read from the layout by eye
×12	100K	100k		read from the layout by eye
×2	4.7K	4.7k		read from the layout by eye
×1	47K	47k		read from the layout by eye
×1	470K	470k		read from the layout by eye
×3	1K	1k		read from the layout by eye
×1	62K	62k		read from the layout by eye
×2	2.2K	2.2k		read from the layout by eye
×1	27K	27k		read from the layout by eye
×2	6.8K	6.8k		read from the layout by eye
×1	100Ω	100		read from the layout by eye
×1	22Ω	22		read from the layout by eye
×1	?	?		LED resistor, value not given; read from the layout by eye
Capacitors 15
×2	10pF	10p		read from the layout by eye
×1	100pF	100p		read from the layout by eye
×1	250pF	250p		read from the layout by eye
×1	1nF	1n		read from the layout by eye
×2	2.2nF	2.2n		read from the layout by eye
×1	3.3nF	3.3n		read from the layout by eye
×4	10nF	10n		read from the layout by eye
×1	22nF	22n		read from the layout by eye
×5	47nF	47n		read from the layout by eye
×1	68nF	68n		read from the layout by eye
×2	100nF	100n		read from the layout by eye
×2	470nF	470n		read from the layout by eye
×4	1uF	1u		read from the layout by eye
×1	10uF	10u		electrolytic; read from the layout by eye
×3	100uF	100u		electrolytic; read from the layout by eye
Diodes 2
×5	1N914	1N914		D1-D5; read from the layout by eye
D6	1N5817	1N5817		read from the layout by eye
Transistors 4
Q1	BS170	BS170		MOSFET; read from the layout by eye
Q2	2N3904	2N3904		read from the layout by eye
Q3	J201	J201		JFET; read from the layout by eye
Q4	J201	J201		JFET; read from the layout by eye
ICs 4
IC1	TL072	TL072		read from the layout by eye
IC2	TL072	TL072		read from the layout by eye
IC3	TL072	TL072		read from the layout by eye
IC4	MAX1044	MAX1044		read from the layout by eye
Potentiometers 8
Dist A	C500K	C500k	Potentiometer	read from the layout by eye
Tone A	A100K	A100k	Potentiometer	read from the layout by eye
Volume A	A100K	A100k	Potentiometer	read from the layout by eye
Dist B	B100K	B100k	Potentiometer	legend prints 'Dist 2'; read from the layout by eye
Tone B	B25K	B25k	Potentiometer	legend prints 'Tone 2'; read from the layout by eye
Volume B	A100K	A100k	Potentiometer	read from the layout by eye
Tone C	A1M	A1M	Potentiometer	read from the layout by eye
Volume C	A1M	A1M	Potentiometer	read from the layout by eye
Trimmers 1
×3	100K	100k		read from the layout by eye