Amazon.com: BOSS Audio Systems MTX TNP212D2 12 Inch 1200W Dual Car Subwoofer Audio, Sub Box, and Amplifier Bundle KIT2 Amplifier Installation Wiring Kit : Electronics
Terminator 12" Series 4Ω Subwoofer | MTX - Serious About Sound®
65 Series 12" 4Ω Dual Voice Coil Square Subwoofer | MTX - Serious About Sound®
MTX TNP212D2 Bass Package Dual 12" sealed enclosure with 250-watt mono amplifier at Crutchfield