Re: Brunetti Mercury

Posted by motterpaul on Feb 18, 2016; 6:11pm
URL: http://guitar-fx-layouts.238.s1.nabble.com/Brunetti-Mercury-tp25277p28202.html

SUCCESS.  I finally got this to work using a 741 instead of a TL071. Nothing else changed. I should have known the OpAmp was the problem because I had no pin 6 output - but I was using different chips from a "brand new" tube - never opened, that I must have ordered way back when I started.

I tried three different ones - so either the whole batch I had is bad (possible, but not something I have personally seen before) or else it is possible that changing the charge pump to a 7660s made it so the Tl071 just wasn't happy.

And by the way - this is by far the BEST 741 circuit I have ever heard. Nice changes Frank (to 5457, and to lower gain pot) this pedal rocks. It is loud and ballsy but almost no hair at all (with a 741!).