This ALPINE subwoofer is the perfect device to take the bass in your car to a whole new dimension. The 12" SWT-12S4 subwoofer delivers extremely powerful performance that is sure to impress. Its power output is 1000W and RMS power is 300W. The durable housing design protects the subwoofer from mechanical damage. For easy installation and easy handling, the subwoofer comes with installation brackets and straps.