Mad Bean Pedals 8-Ball Quick Start Manual

Fx type: overdrive, based on the marshall blues breaker

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8-Ball

FX TYPE: Overdrive

Based on the Marshall® Blues Breaker™

1.95" W x 1.91"H

2015 update: Minor layout tweaks. Clip switch can now be either solder lug or PCB pin mount type DPDT.

small commercial operations. You may not offer 8-Ball PCBs for resale or as part of a

"kit" in a commercial fashion. Peer to peer re-sale is, of course, okay.

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Page 1 2015 update: Minor layout tweaks. Clip switch can now be either solder lug or PCB pin mount type DPDT. Terms of Use: You are free to use purchased 8-Ball circuit boards for both DIY and small commercial operations. You may not offer 8-Ball PCBs for resale or as part of a...
Page 2 B.O.M. Resistors Caps Diodes D1, D2 *see notes 47pF D3 - D6 1n914 1N5817 220n 4558 220n Switch CLIP DPDT 270k Pots GAIN 250kB 100uF TONE 25kB 100uF 100kA 100n 680k Shopping List Value Type Rating Metal / Carbon Film 1/4W Metal / Carbon Film 1/4W...
Page 4 1590B Drill Template 4.44” W x 6.44” H...
Page 5: Wiring Guide
Wiring Guide  The indicator LED can be soldered directly to the PCB.  The enclosure grounds the output jack. If testing outside an enclsoure with the jacks wired, you must ground the output jack sleeve.
Page 6 The 8-Ball also has more gain on tap. Finally, the traditionally low output of the stock unit has been increased slightly. Note that the 8-Ball is still on the low side of total output so you should expect unity volume at around 1 to 2 o’clock on the Volume knob.
Page 7 Build Pic (prototype board)