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 Charge 2 Plus full disassembly - iFixit Repair Guide
JBL Charge 2 Plus full disassembly - iFixit Repair Guide
JBL Charge 2 Repair - iFixit
JBL CHARGE 3 SERVICE MANUAL Pdf Download | ManualsLib
How to fix the sound of your JBL Charge 2 - YouTube
JBL Charge 2 Plus full disassembly - iFixit Repair Guide