Hi everyone- I searched and can't find what I'm looking for, so I hope someone can help. I have a Schroeder 1210L which has a nasty rattle when I play at louder volumes. I tightened all screws, still there. I removed the grill and gently touched the edge of the 10" driver. The rattle goes away, then comes back when I let go. Is my speaker blown? Does it need to be reconed?