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Meyer Sound 24.033.003 Amp RevEng

LeoDJ·Meyer_Sound_24.033.003_Amp_RevEng·Meyer Sound Amplifier PCB 24.033.003/Meyer Sound Amplifier PCB 24.033.003.kicad_sch

Meyer Sound 24.033.003 Amp RevEng

About the Meyer Sound 24.033.003 Amp RevEng PCB

Meyer Sound 24.033.003 Amp RevEng is an open source PCB design by LeoDJ, published on GitHub. It is a board, with 98 components from 51 distinct parts.

Other key parts include the NE5532, LF347N and LM339. By type, the board carries 46 resistors, 21 capacitors, 12 diodes, 11 transistors, 3 ICs and 3 connectors.

It belongs with the audio designs in this gallery.

From the project

Reverse Engineering of a damaged Meyer Sound X-800C amplifier board (24.033.003) for repair purposes

I received two faulty Meyer Sound X-800C electronics modules. A quick look revealed one exploded power MOSFET on the amplifier PCB (24.033.003). Interestingly, the exact same MOSFET (Q1A) had exploded on the second module too. Some other components on the PCB got noticably hot / damaged too (R3, D2, D7, D10).

To better estimate what other components could be damaged, I started to reverse engineer the PCB. But I've fallen into a bit of a rabbit hole and have almost completely reverse-engineered the PCB now... Oops ^^" From what I can tell, the stacked pre-amp/control board (24.033.042)…

Main components on the Meyer Sound 24.033.003 Amp RevEng

NE5532LF347NLM339

Meyer Sound 24.033.003 Amp RevEng bill of materials (BOM)

98 components, 51 distinct parts.

QtyPartRefs
1
NE5532
U1
1
LF347N
U2
1
LM339
U3
1
IRFP240
Q1A
1
IRFP9240
Q2A
1
TIP29CG
Q3A
1
IRFP140
Q4A
1
IRFP9140
Q5A
2
FEP16BT
Q6A, Q7A
1
TIP50G
Q8A
1
MPSA42
Q9
2
KSP92
Q10, Q11
3
~
J1, J2, J3
1
10k
VR1
5
10V 1N5240B
D1, D4, D5, D7, D11
5
1N4936
D2, D6, D9, D10, D12
1
16V 1N4745
D8
1
8.2V? 1N5237B?
D13
1
LM35-LP
L1
4
470p
C1, C5, C6, C12
Show 31 more
QtyPartRefs
2
1000u 16V
C2, C3
2
22n 250V
C4, C9
1
470u 10V
C7
1
1n6
C13
5
100n
C14, C19, C20, C21, C22
1
47u 35V
C15
1
3n3
C16
1
1n
C17
3
1u
C18, C23, C24
7
47.5
R1, R8, R9, R10, R11, R17, R28
5
100
R2, R16, R29, R31, R31B
4
1k5
R3, R20, R27, R38
3
221
R4, R14, R22
2
10
R6, R21
1
2k2
R7
1
6k81
R12
3
2k21
R13, R15, R45
2
100m
R18, R18B
2
15k
R19, R35
1
1k
R23
1
475
R24
1
7k5
R25
1
3k32
R26
2
1k/110?
R30, R34
2
120
R32, R32B
1
1M
R33
1
1k1
R36
1
10k
R37
1
475k
R39
3
20k
R41, R43, R44
1
100k
R42

Meyer Sound 24.033.003 Amp RevEng design files

The KiCad project lives in the LeoDJ/Meyer_Sound_24.033.003_Amp_RevEng repository on GitHub; these links point at the commit this page was built from.

Meyer Sound 24.033.003 Amp RevEng: common questions

How many components are on the Meyer Sound 24.033.003 Amp RevEng?

98 components, from 51 distinct parts. The full bill of materials is listed on this page.

Where can I download the Meyer Sound 24.033.003 Amp RevEng design files?

From the LeoDJ/Meyer_Sound_24.033.003_Amp_RevEng repository on GitHub, which has the schematic; the links under Design files point to each one.

Can I use the Meyer Sound 24.033.003 Amp RevEng design in my own project?

The repository has no license, so all rights stay with LeoDJ. Use it as a reference, and ask the author before reusing the design.

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