I need a how to repair on over the ear sol republics

Over the ear headphone is kinda muffled in one ear. I was hoping ifixit had something, but they don't. Also ifixit just make a speakers main section because I had a bit of trouble finding it headphones.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0