I'll really appreciate if all of us put our question in FAQ section. it's a way to show our respect for everyone in this forum anyway. plus, a more experienced user will not answer this kind of post. they will only help you if you put your question in FAQ question.
btw, DXKL is an old firmware. you may try to upgrade your firmware either via OTA or via odin. if the problem still exist that mean your speaker is broken. for further information about flashing via odin try to use search menu. it wouldn't kill ya.