A third speaker makes all the difference. Adding the Xtreme 2 completely changed the sound for the better. : r/JBL
JBL Xtreme 2 Portable Bluetooth Speaker JBLXTREME2BLUAM B&H
Amazon.com: Hard Case for JBL Extreme/Lifestyle Xtreme 2 Portable Bluetooth Speaker, Travel Carrying Storage Holder Bag Fit for Charger Adapter and Accessories : Electronics
Amazon.com: JBL Xtreme 2, Waterproof Portable Bluetooth Speaker, Blue : Electronics
Amazon.com: JBL Xtreme 2, Waterproof Portable Bluetooth Speaker, Black : Electronics
JBL Xtreme 2 | Portable Bluetooth Speaker
JBL Xtreme 2 review: A jumbo Bluetooth speaker made for tailgating - CNET
Amazon.com: JBL Xtreme 2 Portable Waterproof Wireless Bluetooth Speaker - Black (Renewed) : Electronics