The Jensen J10ASB 10" Subwoofer in Multi-Mounting Vented Enclosure is a force to be reckoned with. The vented enclosure vastly increases output efficiency for your subwoofer providing you with consistent low sounding bass. Its 10-inch subwoofer delivers up to 300 Watts of Peak Power and 100 Watts RMS at a 4 Ohm Impedance. A frequency range between 40Hz-250Hz for unmatched output efficiency that suffices even bass enthusiasts. New Condition.