52mm Portable Speaker Unit For Charge 3 Bluetooth Speaker Diy 4ohm 20w 2 Inch Full Range Loudspeaker Repair Parts Deep Bass 2pc - Speaker Accessories - AliExpress
2pcs Multimedia Speaker Replacement Speaker for JBL Charge 3 Bluetooth Full Range Portable 4ohm 10W - Newegg.com
Khron's Cave: #48 JBL Charge 3 Bluetooth speaker teardown