SeaKing Stores › 13in car subwoofer - 1ohm SVC - T2S1-13 13in car subwoofer - 1ohm SVC - T2S1-13 £1,110.00 13in car subwoofer - 1ohm SVC - T2S1-13. 2000W RMS. Standalone driver, sold individually. Car-audio product; not marine-rated. Add To Cart Added! 13in car subwoofer - 1ohm SVC - T2S1-13. 2000W RMS. Standalone driver, sold individually. Car-audio product; not marine-rated.