These Goldwood Sound 8 ohm 15 inch drivers have a max wattage of 250 watts each and are designed and engineered right here in the USA. Each woofer features a 20oz magnet with bumper plate and vented pole piece. The poly laminated cones have rolled foam surrounds. These woofers are high end, pro audio transducers optimized for all musical instrument, DJ, car audio and professional applications.