4.5 Inch 120mm Bass Radiator Assistant Woofer Metal Diaphragm For Jbl Xtreme Series 3-5 Inch Speaker Accessories 2pcs - Speaker Accessories - AliExpress
Restored JBL Xtreme 2 Portable Bluetooth Speaker, Blue (Refurbished) - Walmart.com
Amazon.com: JBL Xtreme 3 - Portable Bluetooth Speaker, Powerful Sound and Deep Bass, IP67 Waterproof, 15 Hours of Playtime, Powerbank, PartyBoost for Multi-speaker Pairing (Black) : Electronics