SeaKing Stores › 19in car superwoofer - 1ohm SVC - T3S1-19 19in car superwoofer - 1ohm SVC - T3S1-19 £2,130.00 19in car superwoofer - 1ohm SVC - T3S1-19. 3000W RMS. Standalone driver, sold individually. Car-audio product; not marine-rated. Add To Cart Added! 19in car superwoofer - 1ohm SVC - T3S1-19. 3000W RMS. Standalone driver, sold individually. Car-audio product; not marine-rated.