Wednesday, 21 December 2022

Boss OD-2r Turbo Overdrive - Turbo channel

 Schematic and more info about this circuit is avaiable HERE.




5 comments:

  1. Hi Anders, you can tag this one with a few changes:

    All the PNP transistors need flipping; Q4 is currently EBC but should be CBE, Q7 is is currently CBE but should be EBC, Q9 is currently EBC but should be CBE

    Add a link between the Drain of Q5 and the Base of Q7 (T24 - W24)

    Move the 2K2 resistor from S17 to P17

    Its a decent overdrive, well worth a build

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  2. They sell these used in California for $50

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    Replies
    1. Cost me less than that to build so bonus, and California is a bit far from Manchester

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    2. Hey Ian, I think that, regardless of the dollar amounts involved, re-creating ANY Boss circuit that was made after, say, 1980, is NO small task. Damn things are COMPLEX, to say the least. So not only verifying but ALSO debugging this deserves nothing less than the word RESPECT.

      Seriously, respect, homie.

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    3. Cheers Chris, and yeah, why do they make them so big. There is no such thing as a simple / small Boss circuit

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