Re: 27v Split n' Boost

Posted by MAO on
URL: http://guitar-fx-layouts.238.s1.nabble.com/27v-Split-n-Boost-tp44386p44393.html

Gotcha,

Assuming the effect will have it's own volume control, for the smallest, simplest design I think you would just need an 8 pin dip IC that would handle the buffering, split and the volume boost for the clean channel, and a jfet for combining the Effect and Clean outputs.

Or 3 jfets would also work. 1 buffer, 1 boost, 1 mixer. Don't think that would save on size though.

And if your tapping off the effect's 9v supply, the amount of clean boost will be somewhat limited before clipping. If you have lower output pickups such as vintage humbuckers, single coils, etc, then no problem. Otherwise, you would want to power the booster with 18v or 27v via a charge pump for more headroom...which would add another IC.

I think it's doable with 1 8-pin IC, 1 jfet, 4 or 5 resistors and a couple caps will work, but again I made a few assumptions such as the effect already having a volume control, you'd be tapping off it's existing 9v power supply and vintage output pickups.

Let me know