2x JBL GT-X1200 12" Car Subwoofer + Gravity GR-1000.2 Amplifier + 4 Ga Amp Kit - Walmart.com
JBL PRX825W Dual 15" Two-Way 1500W Powered PA Speaker PRX825W
Best Buy: JBL CX Series 12" Single-Voice-Coil 4-Ohm Subwoofer Black CX1200
JBL EON718S 1500-watt 18-inch Powered PA Subwoofer | Sweetwater
JBL Stadium 600 High-Performance Class D 1500 Watts Peak Power Car Audio Mono Amplifier Bundle with JBL Stage 1210 12" 1000 Watts Peak Power Car Audio Subwoofer and Amplifier Wiring Kit - Road Entertainment