Hertz Cento CS 300 S4 Sub 12 Inch 30cm 300mm Car Subwoofer 4ohm 350w RMSHertz Cento CS 300 S4 300 (12) mm (in.) Subwoofer 700 W 4 Ohm The authentic Hertz Sound Experience for the young enthusiasts The new CS 300 s4 Cento subwoofer is the perfect enhancement to every sound system, to fully enjoy the authentic Hertz Sound Experience! The R & D team, always at the forefront in the search for innovative solutions, with unfailing effort, succeeded in obtaining very powerful bass frequencies from ultra compact sealed