Marshall 2205 Volume and Gain Controls

[Gregg]

Hi,

The schematic shows some extra boost channel Volume and Gain controls that are not available on the face panel of the head I've seen. What's the deal with that - is it mistaken or it's a modded one?

http://www.drtube.com/schematics/marshall/2205prem.gif

[Ray Ivers]

Gregg,

VR4a/b on the schematic are two halves of a a dual pot, which is the front-panel Boost channel's 'Gain' control.

Ray

[Gregg]

Thanks for pointing that out - this schematic is not very clear and I missed that.