I did some more testing of grounds. It appears the one my equipment is hooked to is ok? I am at a loss why that one is ok. Whatever. My noise issues with ground etc are gone. Just that little bit of FM. I may try star grounding the outputs of the speaker OG like PD does. I have not done so yet but he does and prefers results so worth a try.
Again my pre-amp feeds zero DC, I checked it. I will see what I can do about approaching the FM with different resistors and capacitors. I may even have some laying around.
Thanks to everyone who is contributing to the thread in a productive way.
Again my pre-amp feeds zero DC, I checked it. I will see what I can do about approaching the FM with different resistors and capacitors. I may even have some laying around.
Thanks to everyone who is contributing to the thread in a productive way.
. . . My stepped attenuator is only a 10k so perhaps switching to a 20k would be wise?
No, the 10k is just perfect.
10k is almost twice as effective at shunting noise as 20k.
So, keep your 10k. 🙂
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