There are replacement foam surrounds for the AD5060/W8:?
?
However, I seriously doubt they're an exact match. Foam vs. rubber is a materials choice, even when compliance is matched, done for damping characteristics and the acoustic impedance match between the surround and cone to control cone resonances. (A mismatch can reflect resonances back into the cone amplifying the issue.) I'd be worried about how far off the foam surround is especially when chosen just because it fits the dimensions. Still, if you're stuck with two dries with shot surrounds and are having difficulty sourcing replacements, it's better than nothing. Might be worth measuring the parameters to see if the difference isn't too horrible to be worthwhile.
