Thursday, 13 July 2023

Mad Professor Royal Blue Overdrive

 Schematic is avaiable HERE.



5 comments:

  1. You are on top of your game! Really interested to see how the 220pF cap in an extended feedback loop makes a difference in the top-end.

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  2. Yeah, this one looks quite interesting for sure. A hybrid of a LED Tubescreamer, Rat, that Björn Juhl signature feedback filter cap, a James tonestack and some fixed tone shaping and boost at the second op amp stage. Very cool design indeed...

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  3. Built this one today and everything seems to work as it should. I did sub the volume and gain pots, but I plan to change them to original spec when I can. Sounds good!

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    Replies
    1. Gosh! Totally missed you verified this one. Sorry about that. Will tag it ASAP.

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  4. Built it to day and it is a bit fizzy. I swapped the op amp for a 5532 and it helped some. I did use 5k1 resistors instead of 5k6 which could change the bodie plot a little but....well just and observation.

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