BROWN-SOUND-IN-A-BOX 2 RTS PCB

The ready-to-solder (RTS) PCB for the Brown Sound In A Box 2 (BSIAB2), one of the best "cranked Marshall™" distortion sounds out there.

About the effect

The BSIAB2 was designed by Ed Guidry and builds on the cascaded MiniBooster work of Jack Orman (AMZ), later refined by Aron Nelson and Doug Hammond. It is a heavy, Marshall™-type distortion box that also sounds good with the drive turned down low.

For more tonal range, the project page includes a "Contour" tone control mod: replace R7 with a 5k6 resistor and add a 100k pot. A separate parts layout and wiring diagram covers that version, and a modifications note has more ideas.

Specs

• PCB dimensions: 5.5cm by 3.7cm
• Solder mask, plated-through holes and screen-printed part placement

Build resources

• Complete instructions for this PCB
• BSIAB2 build instructions, bill of materials, schematic and parts layout and wiring diagram
• Parts layout with Contour tone control and modifications notes

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