Upgrade your vehicles sound system with this easy to install Pioneer Active Subwoofer package for strong powerful bass. (Amplifier is built-in and cables are included). The TS-WX300A features a strong and lightweight IMPP™ (Injection-Moulded Polypropylene) Composite speaker cone, that provides solid and rhythmical bass. It also features a Class-D amplifier that is built into the side of the enclosure, amplifying the bass to high volumes, but also making it easy to install as it can save space and installation time. The Class-D amplifier also has various settings ensuring the user can get the type of bass they want, depending on their own taste in music. TS-WX300A is a 30 cm subwoofer in a ported, bass reflex design enclosure, delivering 1300 W Maximum power and 350 W Nominal Power.