The PWE-S8 Alpine Restyle Compact Powered 8-inch Subwoofer is an easy way to add powerful bass to your vehicle’s sound system. It features a powered 8-inch subwoofer paired with a built-in amplifier, housed together in a cast aluminum enclosure. The PWE-S8 measures just 13.5” L x 9” W x 3” D (at the tallest point) so you can add low, punchy, accurate bass to your sound system without taking up much space in your vehicle. The compact shallow mount design gives you the flexibility to install the PWE-S8 under or behind the seat of a truck, in the trunk of a sedan, or in the hatch of an SUV, or tucked in any other compact space. The die cast aluminum construction provides durability for ongoing performance. The amplifier produces 120W continuous power and the quad-coil subwoofer delivers 32Hz-150Hz frequency response. The PWE-S8 connects to your sound system through the RCA or Auto-sensing Speaker Level Inputs which are conveniently located on the side panel. The side panel also gives you access to Phase, Gain, LP Crossover and Remote Sub Level controls for proper sound setup and greater flexibility during installation. The PWE-S8 is authorized to be sold and shipped from Amazon. For professional installation, visit the store locator on the Alpine USA website to find an authorized Alpine retailer near you.