The Sony Xplod XS-AW200X Active Subwoofer is a rectangular-shaped in-car entertainment unit designed to enhance the bass and overall audio experience of your vehicle. This enclosed active subwoofer from Sony comes in a vibrant red colour and is equipped with an amplifier to provide powerful bass output. It is specifically designed to be placed in the boot of your car and has an impedance of 4 ohms. The Sony XS-AW200X is an ideal addition to your vehicle's audio system, offering a premium sound quality for an immersive driving experience. Compact and very powerful. 

My son had this in a clio and the car buzzed every time he turned it up. Big powerful deep basses.