So i was watching a teardown of a charge 5 and saw that there are screws that need to be unscrewed in order for the ,,skin'' of the speaker to come off,
JBL PULSE 3 TEARDOWN! - HAVE A LOOK ON THE INSIDE! - YouTube
JBL PULSE 2 CHARGING PROBLEM | PAG ORIGINAL TALAGA MAHIRAP BAKLASIN - YouTube