Did some more free air testing and both woofers start distorting at 23 volts at all frequencies I tested from 20-200HZ. So I have about 1/10th the power handling as I should have. Since they distort at the same power input, would that be a sign of a knockoff recone job? I can't tell if the wire coming through the cone is flat or circular cross section because of too much black glue covering it.
One of them also has a rattle that starts at 6 volts that seems to go away when I block the cooling ports.