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 Xtreme - COMPLETE TEAR DOWN / DISSASSEMBLE - YouTube
JBL Flip 5 Parts Main Board/Speaker/Battery/Charging/ AUX Por/ Lot Screws t Etc | eBay