JMP1 Schematic

[Littlewyan]

Here is the schematic for the JMP1. I'm not sure how accurate it is, but someone in the long Anderton 64 Reissue thread requested it, so here is what I have.

[rp3703]

Thanks. While you are here, what is that other schematic you posted on page 27 of the other thread. It looks like an official Marshall copy.

[Littlewyan]

I think that was someone else. I couldn't see any official Marshall schematics posted on that page? I've never seen an official Marshall schematic for the 1 Watt amps.

[rp3703]

My bad, it was on page 28, not 27 and you did post it. Is that supposed to be the JTM145?

[Littlewyan]

Ah yes, I think it is a draft schematic for the JCM1. I have seen a JTM145 schematic somewhere though.

[rp3703]

I found these https://www.marshallforum.com/threads/n ... 1h.114305/ detailed picks of the main PCB for the JMP-1 and while I have not confirmed every single part of the schematic, what I could see looked accurate. At the end of this thread, https://ampgarage.com/forum/viewtopic.php?t=27624 one of the contributors, PM’s the author of this schematic what I can only assume are even more detailed pics of the JMP-1, So I am going out on a limb to say that this JMP-1 schematic is probably accurate.

[Nickerz]

I have a theory this is a closely related circuit. Anyone with better eyes want to compare it to the JMP1?

[ChopSauce]

I have a theory this is a closely related circuit. Anyone with better eyes want to compare it to the JMP1?

This is a pdf: a scalable format (to some extend). You can zoom in (almost) at will.

[Nickerz]

I have a theory this is a closely related circuit. Anyone with better eyes want to compare it to the JMP1?

This is a pdf: a scalable format (to some extend). You can zoom in (almost) at will.

Sorry, I meant to joke that I can't read it from a technical standpoint.