It will have to break in again just like when it was new.
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It probably wasn't reconed but just a new surround for the cones. I had this surround disintegration happen to my JBL L112's and had new surrounds put on and I never did like the bass again after that. Perhaps, it was a matter of "break in" but they were in a secondary system and I ended up selling them before I put many more hours on them. I have heard that the surrounds do need break in so maybe it will be ok.