Features Our engineers at DB Drive have designed this subwoofer from the ground up to shake the ground up. The double-stitched foam surround along with the die-cast aluminum vented basket allows for maximum excursion while the protective magnet cover gives the woofer a rugged yet stylish appearance. High-Temperature Voice Coil 120 oz. Ceramic Ferrite Magnet ( EWX8D2/8D4 Only ) 145 oz. Ceramic Ferrite Magnet High-Grade Low Carbon Steel Top & Bottom Plate Design to optimize SPL Performance 1.5” Hi