Infinity Kappa 1200W Kappa Series 12" subwoofer with selectable 2- or 4-ohm impedance at Crutchfield
1X Infinity Primus 1200 12" Inch 1200W Car Audio Subwoofer High Performance - Newegg.com
Amazon.com: Infinity Kappa 1200W 12 1200 Watt Car Audio Subwoofer, Black (Renewed) : Electronics
Infinity Primus 3000A 300W RMS Power Compact Mono Subwoofer Car Amplifier System Bundle with 12" 1200W Max Power High-Performance Car Audio Subwoofer and Amplifier Wiring Kit - Road Entertainment