For Xtreme Series 4.5 Inch Special Bass Passive Radiator Assistant Woofer Radiation Metal Diaphragm For 3-5 Inch Speakers Use - Speaker Accessories - AliExpress
JBL Xtreme Portable Bluetooth Speaker Tweeter Battery PCB Passive Radiator PARTS | eBay
JBL Boombox - Passive Radiator scratched, is there any way to fix this? : r/ JBL