Infinity Kappa 1200W Kappa Series 12" subwoofer with selectable 2- or 4-ohm impedance at Crutchfield
Infinity Primus 3000A 300W RMS Power Compact Mono Subwoofer Car Amplifier System Bundle with 2x 12" 1200 Watt Peak Power High-Performance Car Audio Subwoofer and Amplifier Wiring Kit - Road Entertainment
Infinity TSS-1200 (Charcoal) 5 compact satellite speakers and a powered subwoofer at Crutchfield
Infinity 1270B 1200 W 12" Sealed Subwoofer Sub Box + 6002A Amplifier + Wire Kit 50667372750 | eBay
Amazon.com: Infinity Primus 1200 12" Inch 1200W Max Power Car Audio Subwoofer High Performance 4 Ohm : Electronics