Im wondering what is the difference between this two:
Yes i used the bottom circuit too and works great for me.RetroRocket wrote: ↑Sun Dec 03, 2017 3:45 amI've used the bottom one that I believe was first posted by wermy. It works alright, but not as big of an effect as I was expecting. With PWM, even filtered it's acceptable but not great quality. Only difference I see with the top one is putting the cap after the ground filtering. I don't see a purpose for grounding the two audio channels separately, it's still two identical circuits with the same components. Maybe you could give both a try and get some tests done!
Actually, I'm finishing up two GBZ's this winter so I might try out the first diagram you posted to check against my own...
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