Was stored properly in box and it just became like this after several months
Looks like the cone blown but it looked just nice before this and it wasn't used


This one shows sign of deformation
Looks like going to tear soon


Guys what actually the cause of above? Are they repairable?

rubber (or whatever material it is using) hardening/deformation over aging perhaps?

in some cases especially where the speaker is no longer in use, it *may* accelerate that hardening and thus potentially cause it to wear faster than it should

you could replace that part...

request a "side wall" from DIY electronics shops...