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.


9 comments:

  1. What replacement of bc549 can i use??

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

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

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    1. 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

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  3. 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!

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  4. 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!

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    1. 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.

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