[egydude15]

the hum u hear means the headunit is sending a constant signal to the sub even thou there is no music being played or the sub thinks there is something going on when it's not suppose to be. check your remote wires first make sure everythign is nice and tight, if not then look at the connectors on the back of the sub its self, if it was the ground, the sub would just turn off and not make any sounds. try to reset your headunit sound settings (bass, treble etc) if the setup worked before there is no reason it should not work now unless you dropped it or something like that.