CERWIN VEGA VPRO154D Pro 1800 Watts Max 15-Inch Dual Voice Coil 4 Ohms/900 Watts Power Handling If you want a daily ground-pounder and want to make your presence known the VEGA PRO series subwoofer was built for you! Your music will take a beating from this professional high power double-stacked motor structure with double progressive spiders that is encased by a rugged proprietary VEGA PRO stamped cast basket! The VEGA PRO series comes equipped with Cerwin-Vega Mobile's new integrated impedance selector feature for installation ease