I want to make a preamp for a mic or line. I have squematics that show RFI filters after the mic/line switch, before the instrumental preamp. In both signal paths of the balanced input appears an inductor with a 220pF capacitor to ground, but the squematics don't specify the value of the inductor!
I don't have much experience in real-life circuits. Maybe someone of you know the values of a LC RFI input filter.
Please help
Anathema
I don't have much experience in real-life circuits. Maybe someone of you know the values of a LC RFI input filter.
Please help
Anathema