Add some thump to your Benz When it comes to upgrading audio, Mercedes-Benz owners haven't had a lot to choose from. But now the Inside Series brings Focal's famous sound to your Benz. The ISUB MBZ 2 8" subwoofers fit into the right and left underseat locations of select Mercedes models, providing a dramatic boost in the low frequencies of your music. Focal utilizes much of the same technology that they employ in their audiophile-grade home speakers, so you'll enjoy high-fidelity sound that will add to your driving experience. Top-notch materials and design The ISUB MBZ 2 is designed to work perfectly with your existing vehicle's factory amplifier. The Polyglass woofer provides neutral and accurate sound, while the butyl rubber surround holds up over the long haul. Integrated connectors hook up to your existing factory speaker plugs - no cutting or splicing required. Installation Note: In most cases, the new sub has the same screw hole pattern as the factory sub and is a perfect fit, but there may be instances where new screw holes need to be drilled in the plastic factory enclosure.