Brown Sound in a Box II (BSIAB2)

 by gaussmarkov

Brown Sound in a Box 2 Layout

Ed Guidry designed this one and I took his schematic from GeneralGuitarGadgets.com. The BSIAB 2 is apparently one of the most popular distortion circuits on Aron’s forum. tungngruv on diystompboxes.com kindly wrote to say that he built the circuit successfully with this layout.


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11 Responses to “Brown Sound in a Box II (BSIAB2)”

  1. audioguy said:

    As part of my High Gain Shoot out I plan this weekend- I built your layout of the BSIAB2. I plugged in and it sounded good, but WAAAAY too low end heavy. After comparing yours to GGGs layout I found that the 2 caps closest to the Vol pot are incorrect. You’ve got .022, GGG has them as .0022. I swapped them and the thing sounds great!

    Posted 05.06.2007 at 1:54 pm

  2. gaussmarkov said:

    Thanks very much! I will fix that immediately!

    That’s a great thread by the way. Thanks for starting that one.

    Posted 06.06.2007 at 1:55 pm

  3. Maury McCown said:

    I notice that you have D1 going to ground. The original schematic has it inline from 9v+ on to C4 and the R2/R6 1M resistor cluster. I’m also not seeing your C2 cap int he original schematic.

    Did you add D1 and C2 for power filtering?

    Posted 10.05.2008 at 7:20 am

  4. Maury McCown said:

    D’OH!

    NEVER MIND! I wasn’t paying attention well enough!

    Posted 10.05.2008 at 7:40 am

  5. Rodrigo B. said:

    Hiii!!!

    Thanks for the layout i’ve made this and sounds really awesome. i’ve a question, when i set the gain control to 0 i have no sound at all, i ‘ve to turn around to 1 to get a sound, also happen with Dr. Boogie, layout, why is that?

    Cheers !!!!!!!!!!!!

    Posted 11.05.2009 at 2:03 pm

  6. Sven von Heyden said:

    I built the BSIAB2 last week and I really like it. Could have a little bit more bass. I used shielded wire from lug2 of the level-pot to the footswitch to reduce feedbacks. Thank you very much for this project! The next will be your spring reverb :) Greetings from Germany

    Posted 23.05.2009 at 6:31 pm

  7. rob said:

    hi…any chance of some audio samples…using humbuckers for a change…most of these sites are fender heads..thus mostly single coil so you never get a chance of hearing the pedals at full gain…cheers dude..pukka site…

    Posted 15.06.2009 at 7:01 pm

  8. chrisw said:

    Anyone tell me what size the box caps are are used with the BSIAB2 pcb? Are they 7.2mm in length or 7.5. Even better if some one can give me the Mouser number!

    Thanks.

    Posted 29.06.2009 at 7:50 pm

  9. dorothegreat said:

    used your layout. just finished testing it in a gig last night and sounds great.

    thank you very much for the layout.

    Posted 27.02.2010 at 12:10 am

  10. Dr Ronn said:

    Completed and demo’ed. Worked perfect and as always, some of the BEST sound i have ever heard…pedal OR amp! Thank you Gauss! :)

    Posted 02.05.2010 at 9:13 pm

  11. mario moran said:

    Hi, I have a question about the 1 uf caps in the bsiab pedal. The general guitar gadgets site has them listed as a film type but the schematic shows one as polarized and one non polarized. Does anyone know the correct kind?

    Posted 05.05.2010 at 5:07 pm



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