JL Audio 10W6V3-D4 W6 Series 10 Inch 25cm Dual 4 ohm Car Sub Subwoofer 600w RMS
The 10W6v3 is best used with amplifier power in the 200W - 600W range and is optimized to operate in a sealed enclosure with only 0.55 cu. ft. (15.6 l) of air space, or a 0.75 cu. ft. (21.2 l) ported enclosure.