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.
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).
Beast!!Afraid to touch that!! :)
ReplyDeleteThanks for the layout.
ReplyDeleteI 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.
Thanks for taking a llok!
DeleteThe layout is updated.