The magnets that some yards will take are called "natural magnets". It was explained to me that natural magnets can be melted and reformed and still have the magnetic property. If the speakers are high end chances are they are natural magnets and can be scrapped. Natural magnets break apart pretty easily, it's a lot of fun picking the tiny pieces off my hammer & screwdriver! It's been quite a while since I checked the price but the last time I think it was .38 lb. Good luck!