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The Rockville W12K9D2 V3 is a 12-inch car subwoofer with dual 2-ohm voice coils, rated 1000W RMS and 2000W program. Its V3 changes over the V2 are aimed at heat: a Punisher-series polypropylene dustcap, an inner dustcap with an optimized pole vent, and a voice coil spacer. The motor is a double-stacked 190 oz magnet with a 3-inch four-layer coil on a black aluminum former. It suits bassheads building a hard-driven daily or competition system who want high power handling without flagship-series money.
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The Rockville W12K9D2 V3 is a 12-inch dual 2-ohm car subwoofer. It is the third version of the K9 series. It adds a Punisher-series dustcap, an inner dustcap and a voice coil spacer, which are meant to keep the voice coil cooler during sustained high-power use.
The 3-inch, 4-layer voice coil is wound on a black aluminum former with USA-made OFC (oxygen-free copper) wire and is rated stable up to 240°C. The motor uses a double-stacked 190 oz magnet and a vented T-yoke. The cone is ultra-stiff non-pressed paper with a thick foam surround, red stitching reinforcement and a Nomex spider. The basket is cast aluminum with a black sanded finish.
The dual 2-ohm voice coils wire in parallel for 1 ohm or in series for 4 ohms. The subwoofer fits sealed or ported enclosures. A custom rubber boot magnet cover and a mounting gasket protect the magnet and help seal the mount.
