Pages

▼

Wednesday, May 25, 2016

Fairfield Barbershop - 1590A

Continuing on with my 1590A kick, here's one for the Barbershop Overdrive from Fairfield Circuitry. I've modified a few things: first, the polarity protection of the original is a bit excessive, so that's been simplified. And secondly, I included 2 trimmers to help set the bias of the J201s (you're welcome, Cody). With 3 pots you'll need to use 9mm pots and the 220uF cap is on it side to fit better in the enclosure and hopefully not get in the way of the input jack. Drilling template can be found here.


at

9 comments:

  1. Joe TafanoMay 25, 2016 at 10:25 AM

    Very nice. great idea these 1590A pcbs
    Thank you
    joe

    ReplyDelete
  2. UnknownJuly 26, 2016 at 8:48 PM

    Just noticed the comment on the trimmers.. lol nice. I hate 201's so much that I will take anything to help bias them. Thanks man.

    ReplyDelete
  3. AnonymousAugust 12, 2016 at 12:36 PM

    Hi, I'm wondering if you still have the component layout for your V1 layout. I had the V1 PCB etched a while ago, and I am in the process of populating the board, but noticed that you had replaced the image with a second revision of your layout.

    ReplyDelete
    Replies
    1. Effects LayoutsAugust 12, 2016 at 1:00 PM

      Here you go.

      https://postimg.org/image/ey4kq1d1n/

      Note that you'll need to swap the wires for the in/out jacks for V1, but it should work ok.

      Delete
  4. UnknownDecember 27, 2016 at 12:47 PM

    What bias must be on J201s?

    ReplyDelete
    Replies
    1. Effects LayoutsDecember 27, 2016 at 2:36 PM

      Typically adjust to half the supply voltage (so around 4.5v) then adjust to taste with the trimmers.

      Delete
  5. plushFebruary 11, 2017 at 8:43 AM

    Verified: https://vk.cc/6dXzgG

    Sag b10k-> b5k

    ReplyDelete
  6. tanxzzJuly 25, 2023 at 6:10 AM

    where i can download this transfer image?

    ReplyDelete