Saturday, 29 May 2021

Dunwich Amplification Bass Overdrive (DIY)

 Based on Boss ODB-3 but with lots of added controls and switches!

Schematic and BOM at OSH Park.




6 comments:

  1. I built it and it works.
    But I can't hear what the filter control is doing

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    Replies
    1. Thanks for building this!
      The Filter control only affects the clean signal. Turn the Blend control CCW and max out the Clean Gain control. Hopefully you can hear the Filter control doing something then.

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  2. I have built the OSHpark pcb of this. Do as Fuzzhead suggested and also max out the Mids pot. It seems to make the most difference with the mids maxed. Then use the mid switch to find your favorite mid freq . You should then be able to hear a lot of what the filter pot is doing.

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  3. Thank you both for the advice.
    I will do the tests and let you know

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  4. I'm going to put this one together - does anyone have any documentation? It's not available on OSHpark anymore. I'm mostly curious about the "bypass" switch - what does it do?

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    Replies
    1. Godcity have released most of the Dunwich OSHpark projects including this one.
      https://kurtballou.com/docs/N.E.W.%20Bass%20Overdrive%20Build%20guide.pdf

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