Marshall dsl 401 volume OD2 mod.

[binito]

Hello,

I have a dsl 401 that I want to increase the volume of the OD2 with respect to the other channels.
Is there a mod that can install a potentiometer somewhere in the circuit to regulate the volume of this channel?

This is the schematic:
http://drtube.com/schematics/marshal...02)%20iss9.pdf

Thanks in advance.

[Rod]

The Marshall dsl shares the same gain stages in OD1 and OD2, so i think that this kind of mode if possible has to be done in the front or potenciometer PCB.

[cjenrick]

try lifting one end of R120 - 1 M resistor.

this should change the ratio of the voltage division feeding the grid of stage 2 in the OD channel.

cj