JBL Club WS1000
Designed for versatility: If you're into bass, you've probably had to sell off subs at some point because they didn't fit in your plans to expand your system. JBL designed their Club Series WS1000BLK subwoofer for versatility. Its low-profile design allows it to fit into shallow enclosures, and its selectable impedance gives you flexibility in configuring your system. That means it'll fit in just about any vehicle and into any upgrades you make to your bass setup.