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This bundle pairs two Rockville W8K9D2 8-inch dual 2-ohm subwoofers with a vehicle-specific dual 8-inch enclosure for 2007-2020 GM/Chevy 1500 Crew Cab and 2500HD/3500HD trucks, plus a dB14 mono amplifier and a 4-gauge wiring kit. The subs are CEA-compliant and rated at 2,000 watts peak each, and the dB14 is dyno-certified at 1,000 watts RMS into 2 ohms. It suits owners of those GM trucks who want a concealed under-seat bass upgrade without building a custom box. Against generic 8-inch sub packages, the fitment-specific enclosure and included amp wiring kit cut installation work, but the box only fits the listed cab and models.
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This bundle pairs two Rockville W8K9D2 K9 Series 8-inch dual 2-ohm subwoofers with a custom dual 8-inch subwoofer box and a Rockville dB14 mono amplifier. The box is made for 2007-20 GM/Chevy 1500 Crew Cab and 2500HD/3500HD trucks. An installation kit for the box and a 4 gauge amp wiring kit with RCAs are included.
Each subwoofer has a 2.5-inch 4-layer ASV voice coil wound with OFC wire, made in the USA and stable up to 200 degrees Celsius. The cast aluminum basket has a black sanded finish. The cone is black non-pressed paper with black stitching reinforcement, a thick foam surround and a polypropylene dustcap. A vented hole in the T-yoke helps dissipate heat.
Each sub has a double stacked 122 oz magnet with a rubber boot cover and a custom mounting gasket for an air-tight mount. The amplifier is rated at 4000 watts peak and 1000 watts Dyno-certified RMS, and is 2-ohm stable.