SeaKing Stores › 12in car subwoofer - 2ohm DVC - R2D2-12 12in car subwoofer - 2ohm DVC - R2D2-12 £85.00 12in car subwoofer - 2ohm DVC - R2D2-12. 250W RMS. Standalone driver, sold individually. Car-audio product; not marine-rated. Add To Cart Added! 12in car subwoofer - 2ohm DVC - R2D2-12. 250W RMS. Standalone driver, sold individually. Car-audio product; not marine-rated.