SeaKing Stores › 8in car subwoofer - 4ohm DVC - P2D4-8 8in car subwoofer - 4ohm DVC - P2D4-8 £110.00 8in car subwoofer - 4ohm DVC - P2D4-8. 250W RMS. Standalone driver, sold individually. Car-audio product; not marine-rated. Add To Cart Added! 8in car subwoofer - 4ohm DVC - P2D4-8. 250W RMS. Standalone driver, sold individually. Car-audio product; not marine-rated.