If your speaker still plays, but the outer edge has deteriorated, it may just need the foam edge replaced.
Neals Speaker Service can do this too.
ReFoam (or ReEdge)
We offer a complete recone which replaces all working components including...
The voice coil
The gasket (when needed)
The dust cover
In fact the only parts reused are the magnet and the
Your speaker will be new again. as good as the day you bought it.