That’s planar mag drive; if the wire is indeed torn, soldering it would not be an easy feat; but chances are, membranes got torn or creased, this particular model has quite crappy material according to a quick search. You might want to unsolder the wires from control circuit and attach some other dynamic to their terminals to check if there is signal; also carefully measure resistance between the same wires (should be like very low) to check this hypothesis.

With broken sound making component, the most sane approach is to buy a new acoustic driver. Rolling out DIY means pretty much designing it (or reverse engineering the old one with unknown materials), matching sound geometry and impedance and all, which is kinda hard, time*money expensive, and fun.