Field replaceable voice coil for the Audax, Polydax USA TW034XO mid tweeter.
These are easy to repair. Unfasten the mounting screws hold the front plate, remove the defective voice coil holder and replace with the new one! Replace the front plate, fasten the screws and you are as good as new.
This was a popular mid – tweeter used in many of the Legacy Audio systems – early Focus and others.