Style:8-Ohm Impedance This Goldwood Sound 8 ohm 8 inch driver has a max wattage of 190 watts and is designed and engineered right here in the USA. This woofer features a 20oz magnet with butyl rubber surround and poly mica cone. This woofer is a high end, pro audio transducer optimized for all musical instrument, DJ, car audio and professional applications.