MI Audio Blues Pro Overdrive

MI Audio Blues Pro Overdrive

Project description

Based on an unverified schematic of the famous Blues Pro overdrive found at Freestompboxes.org.

I'm not very proud on the small space for C4 but in the schematic C4 was an electrolyte with a way too huge value: 22uF. 220nF is the correct value for C4.

Bill of materials

Resistors
R1: 1K
R2: 1M
R3: 1K
R4: 470R
R5: 330K
R6: 330K
R7: 100K
R8: 1K
R9: 22K
R10: 22K
R15: 2.2M
Potentiometers
R11: 250K Log (A)
R12: 10K Linear (B)
R13: 100K Log (A)
Capacitors
C1: 22nF
C2: 1nF
C3: 33pF
C4: 220nF
C6: 10pF
C7: 22nF
C8: 1.5nF
C9: 1μF
Electrolytes
C5: 2.2μF
C11: 100μF
C12: 100μF
DIL IC's
IC1: JRC4558D
Diodes
D1: 1N4148
D2: 1N4004
D3: 1N4004
3 jumper wires
12 trace cuts

List

Click here to see the bill-of-materials as a list or download it as a comma separated values file (.csv).

Code

BB Forum code
HTML code

Comments

Just Right!

This was just the overdrive I was looking for. Had to do a little troubleshooting while trying to stuff it in with another effect. But it didn't take long to catch my own mistakes. This thing sounds awesome! Marsh@ll who???

This layout works perfectly

I built this stompbox, just finished. It works perfectly and the sound is VERY nice! Thank you so much for sharing.

What did you use to design this layout?

What program did you use to render/design this layout?

Thanks

Tristan

...still no working

Ok. You should build one for me :)

Sorry, I can't troubleshoot

Sorry, I can't troubleshoot it here without exrta information like pictures and such ...

Please use the contact form to get personal help, or post a topic on http://www.diystompboxes.com/smfforum/ or http://www.freestompboxes.org/ for more help...

Blues Overdrive

Not working. This is fake.

Working perfectly! Built it

Working perfectly! Built it twice myself and know a few folks who did too.

Alright, nice to hear. I can

Alright, nice to hear.
I can get the my amp signal through, but nothing else works.

Sorry, I can't troubleshoot

Sorry, I can't troubleshoot it here without exrta information like pictures and such ...

Please use the contact form to get personal help, or post a topic on http://www.diystompboxes.com/smfforum/ or http://www.freestompboxes.org/ for more help...

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