Tweeters + Ferrofluid
I can also rewind the voice coils of tweeters and replace the diaphragms. For the voice coil I use the identical heat-resistant copper wire. If the aperture is damaged, I replace it with the original aperture.
Some tweeters also use Ferrofluid. After a certain number of years, it dries out, causing the quality of the sound to deteriorate. You can also contact me for this. I then clean your tweeter and replace the ferrofluid.