4.5 Inch 120mm Bass Radiator Assistant Woofer Metal Diaphragm For Jbl Xtreme Series 3-5 Inch Speaker Accessories 2pcs - Speaker Accessories - AliExpress
What EQ settings are you guys using for Xtreme 3? To my ears, this one sounds best. : r/JBL
Amazon.com: JBL Xtreme 3 - Portable Bluetooth Speaker, Powerful Sound and deep bass, IP67 Waterproof, 15 Hours of Playtime, powerbank, JBL PartyBoost for Multi-Speaker Pairing (Camo) (Renewed) : Electronics
JBL Xtreme 2 | Portable Bluetooth Speaker
JBL Xtreme 3 review: Extremely loud, not so portable - SoundGuys
JBL Xtreme 2 review: A sturdy Bluetooth speaker that's up for serious partying | TechHive