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, April 17, 2017

Wampler Pinnacle

Got another cascaded JFET design, this time from Wampler. Great for getting those EVH Brown Sound tones. I've added 2 trimmers for the 2 non-cascaded JFET stages to make biasing at little easier (originals use 22k resistors). Should be an easy fit in a 125B with top mounted jacks, but should also work in a 1590B with top mounted jacks (though you have to be really precise drilling those).


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28 comments:

  1. UnknownApril 18, 2017 at 10:03 AM

    Verified! By the way, spot switch is"Bright" and equal to "Vintage/Modern", and dpdt switch is "boost".
    Boxing with 125b so i can have boost using 3pdt foot switch.
    Sounds great! Thanks a lot.

    ReplyDelete
  2. UnknownApril 18, 2017 at 10:20 AM

    Can i have the schematic?

    ReplyDelete
    Replies
    1. Effects LayoutsApril 18, 2017 at 11:44 AM

      It's over on FSB. You'll need to login:

      http://freestompboxes.org/download/file.php?id=19399&mode=view

      Delete
    2. UnknownApril 19, 2017 at 11:04 AM

      thank you 🙏

      Delete
  3. wainer.said@gmail.comJune 29, 2017 at 6:43 PM

    Good night, I would like to know how to put a DPDT foot switch, for the booster of this pedal, with a trigger LED? Tank you

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    Replies
    1. Effects LayoutsJune 29, 2017 at 9:07 PM

      There's not a booster in this version of the Pinnacle (you're thinking of the Pinnacle II).

      Delete
  4. wainer.said@gmail.comJune 29, 2017 at 9:58 PM

    But this SWA would not be the booster, of that version? I think it might be possible

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    Replies
    1. Effects LayoutsJune 29, 2017 at 10:51 PM

      That's more of a tone switch. Modern doesn't mean louder necessarily. haha

      Delete
  5. wainer.said@gmail.comJune 30, 2017 at 2:18 PM

    Yes, it's not for reinforcement booster, yes to replace the DTDP thank you

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  6. UnknownJuly 26, 2017 at 10:36 AM

    Hello, could you show correct numbering for dpdt switch lugs?

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  7. harryAugust 17, 2017 at 3:35 AM

    what is the value of the transistors used?

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  8. ArcadeSeptember 17, 2017 at 7:33 PM

    Hi .. any ideas how to setup the trimpots ? I tried 4.5V on the D leg of the J201, but still very noise, probably is a combination of the both trimpots.. Is working fine all the controls and switchs, is just the noise when the guitar is not being played.

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    Replies
    1. Effects LayoutsSeptember 18, 2017 at 9:28 AM

      Yeah, 4.5v is really just a starting point. When I bias JFETs like this, I get it close to 4.5v then just tweak the trimmers till things sound right. Also, have you boxed the board yet? If you haven't, some of the noise could be because it's not shielded.

      Delete
  9. UnknownJuly 24, 2018 at 6:34 AM

    Is it on-on dpdt and spst switces or on-off-on?

    ReplyDelete
  10. FajarJuly 19, 2019 at 11:46 AM

    This comment has been removed by the author.

    ReplyDelete
  11. FajarJuly 19, 2019 at 11:54 AM

    Saya membangun ini tidak berfungsi...tegangan Q2 D S G sama 9.6v

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  12. UnknownJune 1, 2020 at 4:05 PM

    Anyone have a layout for the Pinnacle Deluxe V2?

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  13. GinoJune 18, 2020 at 6:44 AM

    hi to all
    i've build both ...and i have the same problem in both.
    i'n now focused on the pcb version
    i'haven't sound in the output!
    i've checked many times the pcb end everithing is ok (for me)
    anyone had the same problem??
    any solution?
    thanks

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    Replies
    1. Carlos ParatyDecember 27, 2020 at 4:42 PM

      Hello Gino, I´m from Brazil and I´ve build this today (december 27,2020) and works using the PCB picture on the main page. Maybe you have counterfeit J201. Use a test probe and check if there is audio after each component going from input to output.

      Delete
    2. Paulo HeilJuly 3, 2021 at 1:27 PM

      This comment has been removed by the author.

      Delete
  14. Paulo HeilJuly 5, 2021 at 7:03 PM

    I'm having problems, Q1 is with 0.4v in D. Q6 is with 9v in D. Any solution

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  15. Analog PedalsJanuary 2, 2022 at 2:23 AM

    I've built several of these using authentic J201's and it sounds fantastic. Since J201's have dried up, I've tried building with the mmbfj201 from Mouser (using an adaptor board) and it sounds horrible. I've built a test one using sockets to test the jfets and all of the smd's are just unusable. The through hole J201's that I still have sound fantastic. Any idea why the smd's just sound bad in this circuit?

    ReplyDelete

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