But the speakers still work as well as the subwoofer if I connect the wire back to where it was.... I disconnected the wire that goes to the magnet just to disable the subwoofer functionality therefore the humming disappears.
I think the humming is coming from harmonics or noise coming from the circuit board which r being amplified.
So I thought about building a small pcb board with a few capacitor connected in parallel and connect it between the circuit board and the wire connected to the magnet to absorb the harmonics .. This will basically act as filter. However I don't know what capacitor values to use.
Will this work?