Welcome Sassined.
This midrange is a model from 1996 according Seas.
Not easy find new or used units for sale, maybe you
would email Seas or ProAc for a suggestion on a cu-
rrent line replacement new driver or a repair kit.
Good luck.
P.S.> A repair kit are less expensive and will keep
the drivers in original condition, it even dont need
remove the drivers from the enclousure to change
the cone. You would contact Madisound and Parts
Express in this case.