SeaKing Stores › 10in shallow car subwoofer - 1ohm SVC - T1S1-10 10in shallow car subwoofer - 1ohm SVC - T1S1-10 £425.00 10in shallow car subwoofer - 1ohm SVC - T1S1-10. 500W RMS. Standalone driver, sold individually. Car-audio product; not marine-rated. Add To Cart Added! 10in shallow car subwoofer - 1ohm SVC - T1S1-10. 500W RMS. Standalone driver, sold individually. Car-audio product; not marine-rated.