Description
Package Includes: (1) Rockville W12K9D4 12″ Dual 4-Ohm Car Subwoofer (4000-Watt Peak / 1000-Watt RMS), (1) Rockville RSQ12S 0.75 cu.ft Sealed 12″ MDF Subwoofer Enclosure (13.5 x 10.5 x 13.5 in), (10) Metal Wood Screws, (12 ft) 14-AWG Blue Speaker Wire, (2) Spade Terminals.
High-Output K9 Subwoofer Performance: The W12K9D4 delivers strong low-end impact with its Dual 4-Ohm impedance, 33 Hz-1.5 kHz frequency response, Peak Power 4000W / Program Power 2000W / RMS 1000W, 3″ OFC voice coil, double-stacked 190 oz magnet, XMAX 28MM, Mounting Depth 6.85″ and Weight 28.67 lbs.
Enhanced Cooling & Build Quality: Engineered for reliability, the W12K9D4 includes an upgraded Punisher-series dustcap, (inner dustcap heat shield), (vented T-yoke), and (voice coil spacer) to maintain cooler operation during heavy use. The strong cast-aluminum basket, red-stitched surround, and (83 dB sensitivity) help reduce distortion and maintain consistent performance even at high volume.
Pro-Grade RSQ12S Enclosure: The RSQ12S sealed cabinet is built from (3/4″ USA-grade MDF material) for rigidity and accurate bass response. Dimensions are (13.5″ L x 10.5″ W x 13.5″ H) with (11″ mounting depth) and (11.13″ cutout diameter), providing ideal airspace at (0.75 cu.ft). Precision CNC cuts, gold spring terminals, and silicon-reinforced seams ensure long-lasting structural integrity and clean sound reproduction.
Complete Installation Accessories: This bundle includes (14-AWG copper speaker wire), (metal wood screws) for secure mounting, and (spade terminals) for clean internal wiring. These components ensure proper electrical flow and reliable connection to the sub and enclosure. The included wiring accessories simplify installation and support consistent signal transfer for stable, high-quality bass output.

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