[Electrodynamic]

Thanks for posting the pictures - classic example of what happens when you send the driver too much power. When the windings come off the former and end up on the inside of the former on top of the pole you've definitely gone over the limit. Your box was also too big. In 1.2 ft^3 after driver displacement your power handling was lower than 1000 watts (more like 800'ish). We recommend 1 ft^3 exactly for a reason.