Sony Xplod XS-GTX121L 12" 1000 Watt Car Subwoofer (Certified Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty Frequency response range of 30Hz to 1000Hz means youll hear even the lowest notes 5-sided Polypropylene cone for lower distortion and deeper bass Powerful, high energy Ferrite magnet to control cone travel and deliver big power handling. Stroke-stabilising rubber surround helps minimise distortion when the sub gets lively