mark IIc+ preamp schematic

[Boogiebabies]

OK, The V1 A is the first stage for the tone stack. the layout of the IIC+ is not the same as the III. The III is much more spread out and the tone stack leads to the caps and out to the controls and keeps the signal going.
The " Delete on Simul-Class is the .001 cap on the second lead stage plate load resistor. All of mine are stock Simul's and do not have this cap. It is often added as an official Mesa mod to reduce the brightness of Simul amps.

If you need some pictures of the IIC+ circuit board, PM me with your e-mail address and I will send you some of my 85 head. It is spotless becuase it was a head and was never opened.

 

[Boogiebabies]

I cannot stop asking now that i've discovered you got three mark IIC+!!!

On the lead stage exactly on V4A if you catch the schematic there is an advise: DELETE ON SIMULCLASS...now i'm wondering...he is talking about that 0,001 uF ceramic cap? I've just noticed that my mark III lacks this cap and obviously my MK III is simulclass...
Yours IIC+ lack too???

THANKS SO MUCH!!

The IIC+ that I have open is not mine. It belongs to another forum member and I am modding it for him. All three of mine are buttoned up. The pics I sent are of one of mine.

 

[Shep]

hey bb i would love to see the gut's of your mkIIc+'s...i am thinking about modding a mk iii if i get it.
..

 

[jvk]

I've seen porn shots of all 3 of Ed's babies, and they're hot

 

[Boogiebabies]

I've seen porn shots of all 3 of Ed's babies, and they're hot

John,

Your a Boogie pervert...

I am going to shoot some pics of a 15" IIC+ tonight. It shows the entire circuit board as the filter board is out of the way. It will also allow a better angle to shoot side shots of the preamp to see, hopefully, those hidden resistors under the poly's.

Ed

 

[Reeko81]

EHEHEHE ED....he is not the only pervert! You know it!

I'm looking forward to seeing them!!

I'm planning about buying a mark IV (for its versatility) and shaping to make a kind of IIC+ on lead and clean channel...

This will be my next step!

 

[diafebus]

HI!
I'll build this mark II c+ preamp but i don't know if the first schem comparing with the high resolution schem will work fine... my doubt is in the second part, the power part, with only two filter caps are ok?

cya

 

[Bond]

I've seen porn shots of all 3 of Ed's babies, and they're hot

 

[Octavarius]

So how about those gutshots? Sure would be nice to see another clean Simul.

 

[Denkigan]

ok, i need MAJOR HUGE help on this schematic.
1) Where do the light dependent resistors got their light from in this circuit?
2) What are the models/values for the transformers, transistors, and diodes?
3) What do the C, D, and F mean that branches of from the circuits?
4) What is the switch for in the bottom left hand corner of the preamp circuit?
5) Where is the second lead on the effects return plug?
6) Could someone just use like Word and make a clearer image of this or something?
7) Where can I get these parts?

thanks

 

[Masterof1angel]

OOOOPS! I meant to PM Boogiebabies.... but posted instead.

 

[bancika]

Guys at Sloclone forums reverse engineered IIc+, there's a verified schematic there.
Cheers