JCM-800 pedal
- Thread starter Chris420
- Start date
Chris420
Active member
Has anyone built the m-800 board before? This one seems like it will be a tricky build for me to pull off lol. The holes will need to be custom drilled and then i goto find a way to make it all fit inside the enclosure while adding the extra 2 knobs somehow without loosing the Jcm 800 logo. Its going to be a challenge but where theres a will theres a way 
SYLV9ST9R
Well-known member
It's a 6-Knob Type 1, you don't need to have it custom-drilled.
Chris420
Active member
The only reason I need it to be custom drilled is so that it can fit into my design, otherwise it would fit perfectly into that enclosure you mentioned.
temol
Well-known member
Alpha-Pots 9mm
Alpha-Pots 9mm: Alpha Potentiometer 9mm 2k lin - Alpha Pot 9mm 100k log dual concentric - Alpha Pot 9mm 10k log dual concentric - Alpha Pot 9mm 500k lin dua
www.musikding.de
Chris420
Active member
Sweeet thanks!Alpha-Pots 9mm
Alpha-Pots 9mm: Alpha Potentiometer 9mm 2k lin - Alpha Pot 9mm 100k log dual concentric - Alpha Pot 9mm 10k log dual concentric - Alpha Pot 9mm 500k lin dua
SYLV9ST9R
Well-known member
OK, I get you. For the lower middle knob, you could use a D-shaft pot and these knobs, they are really small. Or use these on both the pots you want to relocate if you want to minimize footprint and have a mirrored design.
You can also find the 9mm pots at Tayda (if you're doing your UV printing there, might as well...)
Chris420
Active member
Feral Feline
Well-known member
For concentric 9mm pots (not dual-gang), and black knobs to fit, I sourced them at Small Bear.
Ohhh, now they come in silver, too!
Ohhh, now they come in silver, too!
Chris420
Active member
Thanks!!For concentric 9mm pots (not dual-gang), and black knobs to fit, I sourced them at Small Bear.
Ohhh, now they come in silver, too!
Bricksnbeatles
Member known well
The middle two pots are Mid and Presence, so you could probably set those two internally to keep it a four-knob. I’d personally probably just hardwire the mids knob at 10 since you get a pretty flat response with treble and bass all the way down then, and then make the presence an internal trimmer to adjust to whatever rig you’re using and then leave alone.Has anyone built the m-800 board before? This one seems like it will be a tricky build for me to pull off lol. The holes will need to be custom drilled and then i goto find a way to make it all fit inside the enclosure while adding the extra 2 knobs somehow without loosing the Jcm 800 logo. Its going to be a challenge but where theres a will theres a way
View attachment 15797
Chris420
Active member
Thanks for the input!!
You could always revamp your lookThanks for the input!!
The Marshall Knobs may fit if you prefer those:
Chris420
Active member
Nice!!
Your quite welcome to use this Mockup pictured above, Here is my Original Build:Nice!!
https://forum.pedalpcb.com/threads/m800-overdrive.935/
Chris420
Active member
Awesome Thanks for Sharing!!
temol
Well-known member
Dual knob is (not now) also available from musikding.
www.musikding.de
Aluminium knob for dual pot black, 2,85
Massive black aluminium knob, with engraved marking Bottom shaft: 6mm round Top shaft: 3,5mm D-shape Diameter bottom: 16mm Height bottom: 12mm Diamet
www.musikding.de
Matmosphere
Well-known member
Nice! I’ve used a 3D printer for a decent amount of pedal related stuff but never made a knob I was very happy with.
What kind of printer are you using?
What kind of printer are you using?
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