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Wednesday, June 21, 2017

Castledine Electronics The Wizard

Here's another take on the cascaded JFET overdrive design. This has a similar goal to the Catalinbread Sabbra Cadabra in trying to sound like Tony Iommi with a treble booster feeding a tube emulator. The Wizard is...

A new distortion pedal, inspired by Tony Iommi's guitar sound on the early Black Sabbath albums. It is well known that he used a modified Rangemaster to drive his amps, so the same principle was used for The Wizard. The first gain stage is essentially a Rangemaster, using a germanium transistor, but tweaked for a full range boost. That drives a distortion circuit which has been designed to give something of the tone and feel of a Laney Supergroup amp. Obviously, there is no substitute for a full stack at volume, but The Wizard has a similar distortion character and responds well to picking dynamics. 

 I've laid this out specifically for a 125B enclosure with top mounted jacks.


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13 comments:

  1. BerkicauJune 21, 2017 at 9:56 AM

    And the Q6 is... J201

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    Replies
    1. Effects LayoutsJune 21, 2017 at 9:57 AM

      Haha, yeah. First transistor is germanium and the rest are J201s. lol

      Delete
  2. UnknownJune 26, 2017 at 5:02 PM

    are there any schematics available tnx

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  3. RedPlatesJune 28, 2017 at 12:36 AM

    no need for trimmers for the 201's? thanks!

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    Replies
    1. Effects LayoutsJune 28, 2017 at 9:21 AM

      Not in this configuration, no.

      Delete
    2. RedPlatesJune 28, 2017 at 11:35 PM

      cool-- thank you very much for your response! love the website- i'm learning a lot just from reading all the comments! lol

      Delete
  4. Evan GoldsboroughJuly 9, 2017 at 6:31 PM

    The circuit uses j201. From what I can find the pin out of the j201 is opposite of what's shown (with the flat side facing you g is on the left and d is on the right.) I plan to use 2n5458 as a sub, which has a pin outs opposite of j201. Should I follow the pin out letters or the position as shown? Thanks!

    ReplyDelete
    Replies
    1. Effects LayoutsJuly 9, 2017 at 10:20 PM

      Not sure where you're getting that information. The pinout of the J201 and 2N5458 are the same.

      http://i167.photobucket.com/albums/u160/rocklander/jfet-schemtopinconfig-sm.jpg

      Delete
    2. Evan GoldsboroughJuly 11, 2017 at 9:57 PM

      thanks! that clears things up.

      Delete
  5. Dubious MaestroMay 20, 2020 at 10:42 AM

    This comment has been removed by the author.

    ReplyDelete
  6. Dubious MaestroMay 20, 2020 at 10:43 AM

    Based on the schematic on FSB this layout has some errors and is missing a couple of components.
    Has this been verified?

    ReplyDelete
  7. Dubious MaestroJune 10, 2020 at 9:42 AM

    There seems to be two versions of this pedal.
    If you want to make the latest version change the following:

    The 100uf cap connected to the 4k7 should be 47uf and the 4k7 should be 3k9
    All 22k resistors to 10k
    220pf to 3n9
    2n2 to 1n5
    100pf to 470pf

    ReplyDelete