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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...
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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...
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.
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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.
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