lespaul6":3k2se2h8 said:
great tone.. so here is a list of the things done, however, I think you updated the slope resistor to 47k right? and something else to V2a?
1. Move the wire from the center term on Vol. II over to the ground lug.
2. Add a wire from the center term on Vol II and join it to both 68K input resistors (where they join) on channel I.
3. Swap the couplers around, .0022uF and .022uF.
4. Mixer cap change from 500pF to 470pF.
5. Remove bypass cap on V2a and run just a 820r cathode.
6. Change bypass cap on V1b to a 1uF over 2.7K cathode resistor.
7. .68uF on the presence control.
8. 100k NFB on a 4ohms tap.
9. No bright cap on Vol I.
10. Lar/Mar PPIMV mod.
11. I like to use a 50pF fizz cap in most cases.
The rest of the circuit is stock Marshall Super Lead model # 1959.
Thank you !!
Yeah, this isn't my '68 Major, it's a list from my '76 JMP 100w.
I altered this diagram with the mods to my '76 JMP 100w, it has a PPIMV but I didn't add it to the diagram.
This is updated and like it is right now.
You can enlarge it in photobucket.