Mark III pre amp tube lay out

[xiwiwix]

I was wondering what is the pre amp tube lay out for Mesa's Mark III? I would like to know which pre amp tube socket does what.

 

[guitarsawicki]

You can find Mesa diagrams here: http://www.tubefreak.com/mesa.htm

Mark III user guide is here: http://www.mesaboogie.com/manuals/Mark%20III.pdf

V5 is for driver
V4 is for reverb
V3 is for lead channel

But Randall explains those things better than me :wink:

 

[xiwiwix]

Thanks, What does V1 and V2 controll? What else does V3 have a part in?

You can find Mesa diagrams here: http://www.tubefreak.com/mesa.htm

Mark III user guide is here: http://www.mesaboogie.com/manuals/Mark%20III.pdf

V5 is for driver
V4 is for reverb
V3 is for lead channel

But Randall explains those things better than me :wink:

 

[scottcrud]

V-1 and V-3 control the lead channel, V-2 controls the clean channel...I think!
But V-1 and V-2 control the lead channel for sure.

 

[pmb]

V5 is tube driver, V4 is for reverb.
V3 is for lead
V1 is for clean for R2 and lead
V2 is for the effects loop, and one part of the tube is a gainstage for the R2.
So when you put the amp on lead, you have four gainstages, when you put it one lead and you also pull the R2, you have five gainstages.
That's a lot of gain, ENGL powerballs only have four gainstages.

 

[xiwiwix]

I'm thinking of putting Tung Sol's in V1 and V2 and a RFT in the V3. I'm looking to add a little more gain and smoothing out the tone a little while fattening it up a little. What is a "tube driver"? Does it need any special tubes for the PI?

 

[xiwiwix]

V5 is tube driver, V4 is for reverb.
V3 is for lead
V1 is for clean for R2 and lead
V2 is for the effects loop, and one part of the tube is a gainstage for the R2.
So when you put the amp on lead, you have four gainstages, when you put it one lead and you also pull the R2, you have five gainstages.
That's a lot of gain, ENGL powerballs only have four gainstages.

Thanks for the info.

 

[powerlord]

First time I've ever heard anyone wanting more gain out of a Mark III :lol:

 

[pmb]

I'm thinking of putting Tung Sol's in V1 and V2 and a RFT in the V3. I'm looking to add a little more gain and smoothing out the tone a little while fattening it up a little. What is a "tube driver"? Does it need any special tubes for the PI?

If you want some more gain, you can pull the rythm2 knob. But I can't imagine you want any more gain than that.

 

[scottcrud]

I've got a Tung Sol RI in V-2 a NOS Tesla in V-1 and a RFT in V-3..plenty-o gain!