I hope someone can please help me!! My husband has a pair of B&W DM601 S3 speakers. I accidentally broke one of the silver bullet shaped parts in the center of the cone (I believe they're called phase plugs?). Can these be replaced or do we need to buy a whole new speaker? I don't know anything about speakers (my husband is an audiophile, however) and I was hoping to get some info before he gets home and I have to break the news! ( Any help would be greatly appreciated!! Also, I don't know if it would make a difference but I live in the USA. Thank you!