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.

Tuesday, December 5, 2017

MI Audio Boost 'n' Buff V1

The Boost 'n' Buff is a simple little booster that doubles as a buffer when it's turned off (so it's not a true bypass effect). You should be able to squeeze this one in a 1590A. The FSw pads are for the bypass footswitch. If you want to build the second version of the Boost 'n' Buff, add a B20k to the output as a volume control.


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12 comments:

  1. AgustínJanuary 8, 2018 at 11:16 PM

    What replacement of bc549 can i use??

    ReplyDelete
    Replies
    1. Effects LayoutsJanuary 8, 2018 at 11:43 PM

      Just about any medium to high gain NPN silicon transistor. Google is your friend.

      Delete
  2. AgustínJanuary 10, 2018 at 3:52 PM

    I did everything and i Used bc549c but it´s not working, it does nothing
    What could be happening?

    ReplyDelete
    Replies
    1. Effects LayoutsJanuary 10, 2018 at 4:18 PM

      Any number of things. You could have something shorting, a bad component, cold solder joint... Check your traces for any shorts and go over your build with an audio probe.

      http://www.diystompboxes.com/pedals/debug.html

      Delete
  3. FabianJanuary 26, 2018 at 12:34 AM

    Hello, maybe it's a silly question but, how do I wire the footswitch? Offboard wiring for this kind of arrangement always confuse me, In and Out go straight to the in and out jack?. Thanks for your excelent work!

    ReplyDelete
  4. MikeMarch 19, 2018 at 10:35 PM

    where is the schematic

    ReplyDelete
  5. UnknownJuly 5, 2018 at 11:46 PM

    Hi, I'm a bit confused about the FSw1 and FSw2 and the in and out of the effect. Shouldn't I use the FSw1 to do directly to the "in" of the effect and the FSw2 to go to the input jack? Does that mean I have to make double connection from the foot switch to the input jack and the boost? thank you for your reply!

    ReplyDelete
    Replies
    1. Effects LayoutsJuly 6, 2018 at 11:04 AM

      The In/Out pads go directly to the in and out jacks. The footswitch selects between the boost and buffer. It's not a true-bypass effect.

      Delete
  6. Pedro PinheiroJanuary 5, 2019 at 2:38 PM

    Just made it, works well altough it gets pretty bassy when you crank up the gain

    ReplyDelete
  7. Shellac242January 3, 2020 at 1:27 PM

    May be a dumb question, but are the large grey oval/circles 1uF Film Capacitors?

    ReplyDelete

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