Hello. One of the Optimus LX4's that make up my 'lovely couple' has a faulty Linaeum ET5 tweeter. Does anyone know if they can be disassembled and possibly renewed? The 1995 Radio Shack catalog says the tweeter is a monopole ferrofluid type. Can they be cleaned? Does the ferrofluid evaporate or harden? Is there a type of voice coil? The exposed diaphragm (film) looks intact, however somewhat wrinkled?, as if shrunk! I see a few for sale, but am curious if mine can be saved and recycled? Best Regards and Thank You, civil6.