I figured it was a bass spec amp of some sort. That 3 stage setup seemed like one of the black/silver face Fender Bassman’s. I had no idea Marshall did that in the JMP’s. That’s good to know!
You could make a pretty good argument that tweed Bassmans with the cathode follower sounded better than the BF plate coupled Bassmans for bass, at best it's a toss up, horses for courses, any serious bass player back them would have had an Ampeg anyway 🙂Odd Marshall would waste time copying the BF, the filter cap rewiring is senseless if not wrong and seems pretty sloppy for factory work, I really wonder it came from the factory, maybe a moonlighting worker or authorized tech accommodating a persnickety bassist. The before/after from the start of pt 1 is textbook, even over youtube it's clear as day, the owner didn't waste his money, nice work.
Dan Gower does some lovely mods.
0:36 "wait why am I trying to lift this beast" 😂
Haha, yep!
I figured it was a bass spec amp of some sort. That 3 stage setup seemed like one of the black/silver face Fender Bassman’s.
I had no idea Marshall did that in the JMP’s. That’s good to know!
Bravo!!! Really good job, very nice tones!!👏👏👏👏
Thank you! Cheers!
I'm always blown away at your knowledge of these amps. I learn a ton from these videos! Thanks!
Sounds fantastic Jason. Thanks as always for sharing your knowledge and expertise.
Thanks for listening
Sounds great, and fantastic work as always
Jason you do good work! That is why i like your video's so much!
I appreciate that!
low voltage jmp,s are the honey...ymmv.
Is there anyway you could put a link to the capacitors you used here?
Hi what are the lead spacing for the wima capacitors (which series and voltage)?
You could make a pretty good argument that tweed Bassmans with the cathode follower sounded better than the BF plate coupled Bassmans for bass, at best it's a toss up, horses for courses, any serious bass player back them would have had an Ampeg anyway 🙂Odd Marshall would waste time copying the BF, the filter cap rewiring is senseless if not wrong and seems pretty sloppy for factory work, I really wonder it came from the factory, maybe a moonlighting worker or authorized tech accommodating a persnickety bassist. The before/after from the start of pt 1 is textbook, even over youtube it's clear as day, the owner didn't waste his money, nice work.