Returning my car back to stcok I went to hook up the underseats to the OEM amp and got nothing. So I tested the speaker wires in trunk and got nothing. So I pulled up the underseats and unscrewed the speacker from the enclosment and tested the wires running from the cone... nothing. This is my first blown speaker just wanted to throw this out there make sure that is what I have. And both sides are the same way? How would the previous owner have blown these? Aftermarket amp with too much power?