Friday, 25 March 2022

God City N.E.W. The Thing That Should Not Be Preamp

An op amp emulator of Mesa Boogie Mark II C+ which was used by Metallica for Master of Puppets. There is also a an eq board (which is huge!) so that one is for another post.

Schematic is avaiable HERE.




3 comments:

  1. Beast!!Afraid to touch that!! :)

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  2. Thanks for the layout.

    I found some mistakes easi to fix:
    1. You should move the cut track in M3 one hole to the right and to move the upper side of the 750pF in M3, now free.
    2. Add a cut track in O6.
    3. Reverse D3 diode.
    4. The downer side of that 100k placed under the 56nF should go to the ground. As well the pin 3 of the IC 3. It's enough move the cut track next the pin 3 one hole right, from U21 to U22, and add a jumper from U21 to O21 (ground).

    I can't see anything wrong else.

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    Replies
    1. Thanks for taking a llok!
      The layout is updated.

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