need scem-plate follower

[Valvehead]

Are there any scems out there that might be similar to this =

Marshall type preamp , 3-12ax7 , that use the plate of V2 to drive the tone stack .

just curious to see what is needed from the plate of V2 to the stack and MV

[loudthud]

Look here:

http://www.schematicheaven.com/barga...aster_yba1.pdf

Scrool down to the bottom schematic. I think R36 should be 68K, not 6.8K as shown. There are a couple more versions of this amp that I've never seen schematics on the web. They have the late 70's sloped front panel and split input jacks. They really rock with the extra gain.

[Valvehead]

Thats not the one--that shows V2 as a cathode driving the stack.


looking for one that has V2 with the plate driving the stack

[Enzo]

Unless I am missing something, what you are looking for is the arrangement used in most of the Fender amps on this planet. The TMB stacks anyway.

[Valvehead]

sorry-- i guess i mean a "Marshall style" layout. The fenders dont have the tone stack after V2 like the Marshall .

so it would resemble a 2204 Marshall for example, yet the tone stack is driven from the plate.....not the cathode

[Enzo]

But it doesn't matter which tube it is. The signal at the plate of a tube - whatever stage number it might be - is coupled into the tone stack with a cap. The coupling arrangement won't change because you put the stack after V2 instead of V1 or V3.

[Valvehead]

thank you sir...............

i will try some things.. trying to figure out my home brew amp at the moment.....

[loudthud]

Thats not the one--that shows V2 as a cathode driving the stack.


looking for one that has V2 with the plate driving the stack

Scrool down to the bottom schematic. Where exactly do you see a cathode follower?

[Valvehead]

there we go--sorry didnt see the small scem. Thats what i was looking for in a nutshell/


thanks !