Brown Sound in a Box II (BSIAB2) |

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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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
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
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
Maury McCown said:
D’OH!
NEVER MIND! I wasn’t paying attention well enough!
Posted 10.05.2008 at 7:40 am