27v Split n' Boost

Posted by MAO on
URL: http://guitar-fx-layouts.238.s1.nabble.com/27v-Split-n-Boost-tp44386.html

by request from GrooveChampion:

"Can we get this but with 1 channel, a fixed resistor to set the blend at 50/50 and a dry volume that can actually boost the signal?"

Inspired by BYOC 27v boost with Craig Anderton's Spluffer, Phase Switcher and a non-inverting "mixer".

I haven't built it, but this combination should give a huge amount of headroom and 20dB of non-colored boost for the "dry" signal via the Dry Boost control. The Effect signal should be at unity if my math is correct.  

The Phase Switch would be set for the loudest/fullest sound.

Be sure the electrolytic caps are rated at least 50v just to be extra safe since there is a 27v swing powering the circuit.  

Also, There are two additional/optional ground connections available. I would suggest wiring up the "Effect Return" jack with the normally closed tip connection wired to ground. (labeled "Jack SW Ground" on the layout). This will ground out the "Effect" channel when nothing is plugged into that jack, then the Split n' Boost can then be used as just a clean boost. The other ground connection can be used to ground the enclosure to one of the jacks.

You can sub electrolytics for the 2u2 MLCC caps, the (+) sides are towards the IC.

Hope it works :0)