JMP50 Clone Build, Part 8
Nearing the end of building my JMP50 clone. The turret board is populated and a Lar/Mar PPIMV is wired in. But does it work?
Sage advise is to build the basic amp first and test it to make sure it works before starting on on the mods. Did I follow the sound advise? No, I did not. I went ahead and added a Lar/Mar PPIMV before firing it up for the first time. It took a while to get the connections so I was happy with them, but I think it turned out very well in the end.
The other end of the PPIMV is connected to pin 5 of V4 and V5 where the 5.6k resistors usually go. I wasn’t comfortable leaving these to hang in the breeze so I put a piece of stripped wire insulation on the resistor leads. It isn’t a rugged as I’d like, but it’s a good start.
The obligatory gut shot. You might not notice, I haven’t installed an indicator lamp yet. I was going to use a Fender-style jeweled lamp that I have, but that requires a fairly large hole in the chassis so I’m undecided. I need to take a few more better pictures of the guts so that the components are clearly visible.
The back. The transformers are still wrapped in paper at this point to prevent the black paint from getting scratched up.
