em07189's Recent Activity

  1. em07189 replied to the thread Marshall JVM preamp question.

    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...

    Mar 6, 2021 at 10:09 AM
  2. em07189 posted a new thread.

    Best way to desolder components in the ground side

    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...

    Forum: The Workbench

    Mar 5, 2021 at 4:45 PM
  3. em07189 replied to the thread Marshall JVM preamp question.

    Hello Santiago from Portugal. The JVM for me is one of the best amps marshall released recently, but my amp and sound tastes changed...

    Mar 5, 2021 at 4:38 PM
  4. em07189 replied to the thread JVM410H Crunch Channel - what to do with it..

    For me the best crunch channel is od2 in green mode before i moded the amp.

    Mar 5, 2021 at 4:16 PM
  5. em07189 replied to the thread Marshall JVM preamp question.

    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...

    Mar 4, 2021 at 7:38 AM
  6. em07189 replied to the thread Marshall JVM preamp question.

    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...

    Mar 4, 2021 at 6:15 AM
  7. em07189 replied to the thread Marshall JVM preamp question.

    besides reducing gain It must do filtering, because When switching from crunch green or yellow to red mode you can ear a diference in...

    Mar 3, 2021 at 10:01 PM
  8. em07189 posted a new thread.

    Marshall JVM preamp question

    Hello! Can someone explain me what is the purpose of the preamp section in red in the schematic bellow?...

    Forum: The Workbench

    Mar 3, 2021 at 12:11 PM