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
Easy Guide to REPAIR Broken BOSE QC25 Headphones - NO SOUND From One Ear : 5 Steps (with Pictures) - Instructables
Amazon.com: QC35 Headband, Replacement DIY Head Band Cushion Pillow Repair Parts for Bose QuietComfort Quiet Comfort QC 25 35 II QC25 QC35 II Headphones - Black : Electronics
Repair Bose Quiet Comfort QC25 with bad right speaker - YouTube