QC25 repair] While it's actually not that hard to find good tutorials online on how to replace the speakers, I want to really insist about the heat on plastic. Don't do like
Replacing Blown Speaker on Bose QC35 I & Bose QC 35 II | Repair Tutorial - YouTube
DIY Replacement Speaker Unit Driver for Bose OE2 AE2 SoundLink SoundTrue QuietComfort 3 15 25 QC3