Again, the filter design is dependent on the load characteristics. You can tweak the resistor value to get it closer to what the load resistance/reactance is presenting to the supply.
EV607797
I read the thread that you posted and I see more as to what he has tried to do. Unless I missed it, he never actually posted why he needs the AG AB source apart from the 601 needs and why it needs to be hum free. Filtering works, but, as I posted, it is dependent on the load characteristics.
Rcaman
