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How to repair the sound bass are crashed I know that magnet are so many little iron inside there… How to pick up that iron without crashing the membranes Thanks

@noctis not sure what you are referring to when you speak about the many little iron. I wonder if you damaged the coil or magnet. Post some pictures of what you are looking at, that way we can see what you see. Adding images to an existing question If it is the coil or magnet then the only repair would be a replacement.