The GLADEN HG-ONE200MB-L-SQ is a low-frequency woofer designed specifically for the left front footwell niche of left-hand drive Mercedes C, E, and GLC models, including the W205, W213, and X253 series. This speaker handles 120 W of power with a 3 Ohm impedance, utilizing a neodymium magnetic system and an air-dried paper diaphragm to deliver focused bass response. Because this is a component for semi-active systems, you will need an external amplifier with appropriate filter settings to ensure it operates correctly. Please note that this package contains a single unit, while the corresponding midrange speakers and tweeters are available separately to complete your audio setup.