ROCKFORD FOSGATE T0D415 15 Power T0 Series Dual 4 Ohm Car Audio Subwoofer. 15 Dual 2 Ohm Power T0 Series Subwoofer. Kevlar fiber reinforced paper cone provides stability and durability. Vertical attach surround technique (VAST) provides up to 25% more effective radiating cone area. Anodized aluminum heat sinking dust cap allows air flow to keep woofer ventilated. Anodized aluminum voice coil former provides superior heat dissipation and keeps the subwoofer cool during high SPL conditions. Flex fit basket utilizes slots… Continue Reading ››