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Amazon.com: Harmony Audio HA-ML182 Monolith 18" Car Stereo Competition SPL Sub 3500W Dual 2 Ohm Subwoofer : Electronics
Amazon.com: KICKER TRTP 12-inch (30cm) Thin Down Firing Subwoofer and Passive Radiator Enclosure, 2-Ohm, RoHS Compliant : Electronics
Amazon.com: NVX VSW82v2 8" 500 Watt (250W RMS) Dual 2-ohm Space Saver VS-Series Car Subwoofer (VSW 82 Version 2) : Electronics
Amazon.com: Stetsom EX 3000 Black Edition 2 Ohms Mono Car Amplifier, 3000.1 3K Watts RMS, 2Ω Stable Car Audio, Full Range HD Sound Quality, Crossover & Bass Boost, Car Stereo Speaker MD,
Amazon.com: Skar Audio SDR-10 D2 10" 1200 Watt Max Power Dual 2 Ohm Car Subwoofer : Electronics
Amazon.com: CT Sounds MESO-8-D2 1600 Watts Max 8 Inch Car Subwoofer Dual 2 Ohm
Amazon.com: Skar Audio VD-12 D2 12" 800W Max Power Dual 2 Ohm Shallow Mount Car Subwoofer : Electronics
Amazon.com: BOSS Audio Systems MRGB10W 10 Inch Marine Audio Subwoofer - 800 Watts Max, Dual 2 Ohm Voice Coil, Multicolor Illumination, Weatherproof, Sold Individually, for Boxes Enclosures, Hook Up to Amplifier : Electronics