Grateful Dead Music Forum

anyone have the secret sauce goods to the phase inverter mod ?
I've seen lots of demos but not what the mod actually is

I have the tone stack, .022's, going on

thanks

What follows is public domain info. from this forum that I saved some years back, perhaps it will assist you here. Caveat: I'm not a tech and can't vouch for the advice, I'm merely sharing it for you to consider further if you wish.

Re: SF twin gut shots/ Help with some minor mods pleeeeze
#162385 by Pointclear
Tue Aug 28, 2018 10:04 pm

ooo

- black-faced the phase inverter and bias pot with dale metal film resistors, xicon metalized polypropylene caps - I like these in the phase inverter over the orange drops: responsive, 3-dimensional and textured

- changed the phase inverter input cap to .oo27 Sprague 225p - fattened up the tone just enough

Jon - this is money...

Jerry would be the first to tell us, "I never spent my life copying anyone."