Thanks for the advice. I quickly realized that the voltage out from IC20 was too low, so I figured I'd just add another regulator (a 7812) to provide the DC.
This seems to work, although I get a loud noise on the output (50 Hz, that goes nicely with the bassy tones, gives quite a PWM twang to it
I've measured the AC on the output from my 7812 to approx. 0.47 V, compared to 0.02 or something out from IC14.
I tried putting a 1uF cap from pin3 to pin2 on my 7812, but the hum only gets slightly weaker..
Measuring the capacitor it settles nicely at .97uF.
So I should add a resistor to increase
the voltage before going to IC17?
I figured you put a resistor to decrease voltage in a circuit.. Is this in any way similar to a pull-up resistor?
I think I saw that schematic when I at first researched this project but i decided to go with the other one since I had all those components at home atm. ^_^