I built a custom PCB to attach to the stock head unit harness on my e46 BMW. The audio inputs are differential and go to a separate audio system controller. When I turn it on and enable my circuit everything is fine but as time goes on, static starts building up. I have bypass capacitors on all 4 inputs (left and right +,-). Could charge be building up? Do I need a resistor in there somewhere? Thanks.
No announcement yet.
Increasing static on differential inputs