Preamp tube proximity. marshall mod

[joesatch]

Embarking on a #36 style mod to my 2204 clone. I have seen Lee Jackson do this type of mod and he squeezes the extra tube between V2 and V3 and it is a tight fit!. What are the effects of this proximity and would it be better to move it away from the PI and between V1 and V2?

[sluckey]

I'm sure Lee knows what he was doing. If we could see a schematic we might have a clue too.

[joesatch]

he puts it between v2 and v3 so he can tap off the B+ connected to the V2 100k plate. I'm gonna put mine between v1 and v2, wanna stay away from the phase inverter

[sluckey]

Well, since you ain't gonna show a schematic, I'll take a WAG. I suppose that #36 is gonna add more gain stages to your already high gain 2204. Where you put that tube could be very critical.

[uki]

Hey Joe how about put the extra tube at the edge of the chassis and rewire V1 and V2.

Look the picture, it will look much more neat!!

[joesatch]

Hey Joe how about put the extra tube at the edge of the chassis and rewire V1 and V2.

Look the picture, it will look much more neat!!

I have a small box chassis. cant do that

[tubenit]

from ARCHIVES    https://el34world.com/Forum/index.php?topic=17406.0

[dwinstonwood]

Thanks for that link tubenit!
[but, add an "h" in front of the URL so that it becomes clickable - https... ]