Car Subwoofer For Benz C W205 Glc E W213 S W222 Series High Quality Amplifier Woofer Under The Seat Automobile Bass Speaker - Multi-tone & Claxon Horns - AliExpress
ESX VXM8WR 20 CM (8 ") Subwoofer Compatible With Mercedes Benz C W205 Saloon | eBay
Tutorial: Adding a subwoofer to Burmester system. - MBWorld.org Forums
Audio System MFIT MERCEDES C-CLASS W205 EVO - Audiokit