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Tonebender Mk. III

Started by marauder, April 28, 2013, 03:01:38 AM

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marauder

More mojo than ever.  In fact too much, as the board is incredibly tight with the axial 220nf caps.

Made to the same spec as a DAM FS-75, using Mullard OC44, OC71, and a Japanese germ as there's no Mullards left with the right gain for Q3.

Sounds great, louder than a straight mk. III clone.

ColesBD's enclosure is stunning in the flesh, no decal required.




gingataff

Mains insulation on the transistors? Too cool ;D

marauder

Quote from: gingataff on April 28, 2013, 04:53:01 AM
Mains insulation on the transistors? Too cool ;D


Yeah, I had to extend the legs on the transistors, and couldn't use thinner insulation.  It follows some logic which colour relates to which leg.

gingataff

Do you ground to the chassis when using insulated jacks?

I've used them on a couple of pedals without grounding and so far no nasties but I do wonder if I should drill a hole for a crimp terminal or something.

nzCdog

Very nice build! Enclosure looks great. Is that an opamp buffer tucked away in there? 

marauder

Case is grounded through a pot casing.

The IC is a charge pump, so it all runs nicely with -9V.