My lg aristo speaker stopped working. no speaker phone, ring tones

My phones external speaker is broken. I have no ring tones or speaker phone. I don't think its a software or programming issue because when I hold my ear to the rear speaker I can hear slight sound and static. How do I replace this speaker and is it worth the time to do it?

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

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 1
crwdns2934285:0crwdne2934285:0