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Thanks, i will try out some more mods, but i would say that the first gain stage is the key here to achieve what i want, i'm going to bias the...
Hello Again Santiago, Usually i use a prs custom with stock pickups that are basically a PAF. I think that i forgot to mention that to lower...
Well im able to desolder and remove components, but im having some problems to desolder the ground leg side of a resistor, what do you recommend...
Hello Santiago from Portugal. The JVM for me is one of the best amps marshall released recently, but my amp and sound tastes changed towards to a...
For me the best crunch channel is od2 in green mode before i moded the amp.
I think that im going to put and mod this gain switch to the cathode side, and increase the value of R129, or put this switch in other gain stage...
After giving a second look to the schematic it seems that the woofiness and mud on the red modes comes from the low value of R129, when gain is...
besides reducing gain It must do filtering, because When switching from crunch green or yellow to red mode you can ear a diference in tone, and...
Hello! Can someone explain me what is the purpose of the preamp section in red in the schematic bellow?...
I just have tried a piggyback 10uf across R97, and the result its better than with a 4,7 uf in this position. Because adding bass in this position...
For richer bass and punch in channel 3 try the mods and your will see.
Yes they will affect all channels but they will sound alot better. The amp still has alot of gain with these mods. The negative feedback mod will...
Just made some simple mods to mine early version JVM410H, and now its a killer amp, heres what i have changed: - Piggyback a 150K in R71, adding...
