JBL PRX815XLFW 1500-Watt 15" Active Subwoofer | Reverb
JBL STADIUM122SSI 12” High Performance 1350 Watts Peak Power Selectable Impedance Car Audio Subwoofer Bundle Combo with Class D 1500 Watts Peak Power Car Audio Mono Amplifier and Amp Wiring Kit - Road Entertainment
Amazon.com: JBL Club 1224 - 12” Subwoofer w/SSI™ (Selectable Smart Impedance) switch from 2 to 4 ohm, Black : Electronics
JBL Stadium 600 1500W Amplifier Subwoofer Bundle w/ 10" 1350W Sub & Wiring Kit | eBay