MTX T812-44 Thunder 8000 Series 12" subwoofer with dual 4-ohm voice coils at Crutchfield
Mtx Tnp212d2 12-inch 400-watt Rms Dual Loaded 1200-watt Car Subwoofer Enclosure Audio With Sub Box And 250-watt Mono Block Amplifier : Target
Amazon.com: MTX TN8MS Terminator 8 Inch Micro Compact Amplified Subwoofer Enclosure for Small Vehicles with Class A/B Amplifier, Variable Bass Boost, External Bass Control, and Smart Engage Auto Turn On Circuitry :
MTX 12" 1200W Dual Loaded Car Subwoofer Audio w/ Sub Box & Amplifier (Open Box) - Walmart.com