1997 Honda Civic DX
i have a set of 12s n my car and my old amp blew so i replaced it with the same amp as before, but now its doing weird stuff. if you tap on the housing over the stock speakers from which the input is run from the subs will play the noise. regardless if the deck is on or off, it will do this when there is power running to the amp. it never did this before with the old amp and all i did was swap the wires from one to the other. is there something m missing here or what.