The Vault = Schematics and Mods

[Peter H. Boer]

MB-1 schematics  :thumb-up:

[Peter H. Boer]

and more MB-1

[Peter H. Boer]

Still more MB-1

[MarshallJMP]

Or here it is in one pdf file.Let's hope now that Robbhell won't bitchslap me anymore. :'(

[Rusty]

Hi folks, where can I find the schematic diagram for the Mp1 V1 and V2 main board. I have looked at the PCB layouts that are here but I would like to have the actual MP1 schematic as I would like to study it to see whats connected to what. It would be really nice to see it if that would be possible.

I'm sorry folks, but is the schematic here somewhere on the forum that I have mistakenly overlooked and not looked hard enough for or maybe I'm getting old   :)

Thanks in advance folks.

 

[rnolan]

Hey Rusty, the MP1 schematics are here (http://adadepot.com/index.php?topic=148.45). What we don't have is a nice diagram of the signal flow through the MP1 like on page 3 of the MP2 manual which is very useful from a gain structure patching sense (better/more useful for what connects to what). I did ask MJMP if he'd do one for us (as he knows the MP1 backwards/forwards and sideways LoL) quite a while ago. Hopefully this post my jog him to do it ? (please  :bow: ).

[Rusty]

Hey Rusty, the MP1 schematics are here (http://adadepot.com/index.php?topic=148.45). What we don't have is a nice diagram of the signal flow through the MP1 like on page 3 of the MP2 manual which is very useful from a gain structure patching sense (better/more useful for what connects to what). I did ask MJMP if he'd do one for us (as he knows the MP1 backwards/forwards and sideways LoL) quite a while ago. Hopefully this post my jog him to do it ? (please  :bow: ).

Ahhh,,, I think I need new glasses. Thats what I was looking to see. I will take a good look at both the MP1 & MP2 schematics. If MJMP could do something like that I think it would be an awsome schematic to have and the man would deserve a gold medal and the Nobel peace prize together.

I do know that it would be quite an undertaking to start from scratch laying out the schematic on a electronic software package, plus given that the MP1 has the track on both sides of the board it would make it double the chore.
I use a couple of electronic design software packages for my own little projects. I used LTspice for several simulation models and I think that it's an excellent powerful little piece of software thats free to download. Another package that I use from time to time is National Instruments Multisim and Ultiboard. I was educated on that one and I use it seldomly to test out my little circuits.

I could 'possibly' give MJMP a hand to lay out the schematic depending on which software package he uses, some of the spice variants are compatible with one another I think. But if he knows that board inside/outside/upside down then he's light years ahead.

Thanks for that rnolan, much, much appreciated.

   

[MarshallJMP]

Why would you like to redraw the schematic?

[Rusty]

Why would you like to redraw the schematic?

Hey Rusty, the MP1 schematics are here (http://adadepot.com/index.php?topic=148.45). What we don't have is a nice diagram of the signal flow through the MP1 like on page 3 of the MP2 manual which is very useful from a gain structure patching sense (better/more useful for what connects to what). I did ask MJMP if he'd do one for us (as he knows the MP1 backwards/forwards and sideways LoL) quite a while ago. Hopefully this post my jog him to do it ? (please  :bow: ).

I was thinking something along the line that rnolan suggested and was thinking to make a more compact consice signal flow diagram of the audio signal path only leaving out the digital control blocks. Your right though, its all there after having a proper look through the scematic that you kindly posted up.
I probably got too far ahead of myself with that post as I didn't get a decent look at that scematic.  ::)

[MarshallJMP]

The schematic is quite good,try to compare that with the MB-1 schematic,now that's a mess.

[rnolan]

Maybe have a look at page 2 of the MP2 User Manual "Signal Flow" diagram. This is what I was suggesting would be useful for MP1/Classic/3TM etc. This diagram is very useful for patching, gain structure etc, it's not a "under the hood" diagram as such, but desalinates where you can come and go. E.g. when I thought to use the MP2 cab sims with an MP1, you can clearly see that by coming in the MP2 FX returns (ie MP1 A/B out > MP2 FX rtns A/B), and after that you pick up (in the MP2, If you wanted ?) Tremolo, Stereo Volume CC, Room eq (this is very useful BTW), Output level and then cab sims (I recommend the 2 x 12 setting)). Reading this page helped/set me to test this scenario. Which worked a treat  :thumb-up:
@MJMP, so not really a schematic, just a signal flow diagram of MP1/classic/3TM? (not sure 3TM would differ from MP1 in this context) and MB1 would be really useful.

[NeverAfter]

Digging through some old files on my server, I've found some more schematics and instructions for the MP-2 that aren't listed here. Enjoy!

[NeverAfter]

...more

[NeverAfter]

...and some more

[NeverAfter]

...and even more