The JL Audio 10W7 is a 10" audio subwoofer, in the W7 product series. This series provides models in 8, 10, 12 and 13 inches. The core design is consistent across the product line. The first number represents the size in inches for the surface area of the speaker. The 10W7 offers a free air resonance of 30.6 Hz and a thermal power handling of 750 W. The 10W7 offers between 125 to 500 watts of power. Operation over 750 watts is not recommended for this model and voids the warranty. To go up to 1,000 Watts, look at the 12W7 model. A detailed product manual is included with the subwoofer, along with a visual installation guide. Online tutorials provide step by step instructions on the wiring and installation of the subwoofer.