This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Monday, July 17, 2017

Lovepedal Dover Drive

Here's a pretty interesting overdrive from Lovepedal (Hermida). The signal goes through a dual PNP silicon transistor stage (don't worry, it's still a negative ground effect), then into a op amp gain stage with soft clipping in the feedback loop, with a Rat-style tone control, followed by an output buffer. Schematic can be found on FSB for reference.


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10 comments:

  1. plushJuly 17, 2017 at 10:55 AM

    I wonder what happens if you throw germanium pnps instead of silicon ones. Will definitely check.
    ty for the layout

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    1. UnknownJuly 18, 2017 at 8:06 PM

      I'd be interested in how this goes... need to do something with some spare 2n404a

      Delete
  2. AndroidJuly 18, 2017 at 9:50 AM


    I installed old Soviet germanium transistors (q1-mp42b h21 = 82, q2-mp41a h21 = 129). The sound is very cool. Warm and saturated sparkling )))

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    1. AndroidJuly 18, 2017 at 10:45 AM

      Diodes are also old Soviet germanium d9b instead of 1N34a

      Delete
  3. MonjeSeptember 21, 2017 at 5:23 AM

    I did this with the same components that indicates the circuit, just for the PNP, I switched to the BC558, because I bought a lot of them for the Band of Gypsys and I really liked it. The sound is very personal, powerful and loud, in my case like my BC558, have an HFE above 600, when I arrive with the volume close to the maximum it enters saturation, even regulating the trimpot to the minimum, I will have to limit the volume pot with a resistance.
    I'm getting addicted to overdrives, and this is among the best, to add to the collection. Thank you!

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    1. AndroidJanuary 8, 2018 at 3:28 PM

      Решил попробовать собрать как и ты! Очень много усиления мне понравилось! )

      Delete
  4. UnknownFebruary 27, 2018 at 7:40 AM

    I have a problem in the circuit, I have a motorboat noise only when I put the gain in more than 80%, I already looked and I did not find any errors in the scheme, I'll redo the PCB to see if it solves.

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  5. eJJune 11, 2018 at 9:04 PM

    I have this problem too

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  6. UnknownDecember 7, 2018 at 11:40 PM

    Help!!!

    ReplyDelete
  7. CrispyFunkMarch 28, 2022 at 7:55 PM

    this circuit is the sound i have been trying to get for years with tons of gear,over drives /boosts into a marshal amp but never got the sound i wanted, all this time i just needed a Dover Drive into a clean amp . sounds amazing!!! TY for all your work keeping this site running.

    ReplyDelete

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