The JBL GT-BassPro12 powered subwoofer pumps out lush, car-rocking bass through a design so cool you won’t want to hide it in your trunk. The patented Slipstream port design delivers deep bottom end while minimizing turbulence. Turbulence, or port noise at high volume, isn’t just annoying; it’s a signal that the port is no longer working and you’re getting less bass than you paid for. The Slipstream design is carefully optimised for the combination of woofer, amp and enclosure, and no other company has it. And with the included remote control for drive-time adjustments, the only time you’ll need to stop is for gas.