Marshall Lead 3005 12W Preamp

Ongoing

STD Marshall Lead 3005 12W Preamp

License: Public Domain

Mode:

Editors' pick

Update time： 2022-03-31 14:07:09

Creation time： 2019-07-31 02:17:09

Description

A simple Preamp to use with the power Amp you like. Easy and Cheap, but very Useful and easy to Mod.

Design Drawing

schematic diagram

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PCB

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BOM

ID	Name	Designator	Footprint	Quantity
1	1N4148W	D1,D2,D3,D4,D5	DO-35G-F	5
2	330k	R1	AXIAL-0.3	1
3	68k	R2	AXIAL-0.3	1
4	33k	R3	AXIAL-0.3	1
5	56k	R7	AXIAL-0.3	1
6	10k	R4,R6,R8	AXIAL-0.3	3
7	6k2	R5	AXIAL-0.3	1
8	220R	R9	AXIAL-0.3	1
9	220k	R10	AXIAL-0.3	1
10	8k2	R11	AXIAL-0.3	1
11	2k2	R12	AXIAL-0.3	1
12	12k	R13	AXIAL-0.3	1
13	15k	R14	AXIAL-0.3	1
14	50k B	TREBLE	3 HOLES	1
15	50k A	BASS	3 HOLES	1
16	10k B	MIDS	3 HOLES	1
17	1M A	VOL	3 HOLES	1
18	22k B	GAIN	3 HOLES	1
19	2,2uF	C4	CAP-Z-5MMX5MM	1
20	204-10SURD/S530-A3	LED1	LED-3MM/2.54	1
21	82nF	C1	CAP 0.2 IN	1
22	100pF	C0,C5	RAD-0.1	2
23	10nF	C3	CAP 0.2 IN	1
24	2n2	C9	CAP 0.2 IN	1
25	100nF	C11	CAP 0.2 IN	1
26	Low	IN1	HDR-1X1/2.54	1
27	High	IN2	HDR-1X1/2.54	1
28	OUT	P1	HDR-1X1/2.54	1
29	Header-Male-2.54_1x1	+16V,-16V	HDR-1X1/2.54	2
30	Bright	SW2	2 HOLES	1
31	K2-1107ST-A4SW-06	SAT.	2 HOLES	1
32	220pF	C2	RAD-0.1	1
33	22nF	C10	CAP 0.2 IN	1
34	Dual Opamp +Top	OP	DIP8	1
35	2PDT	S2,S1	3 HOLES CHICO	2