I have a 2007 SLK280 and it sounds like the front driver side door speaker has gone bad - the larger bass one? Anyway what are the replacement options. I live in Washington DC so I searched Hertz speakers but no one is selling new product within the states. And heard these speakers are not all that great so if I am having to replace maybe a medium cost upgrade is in order. I am in no need or blasting loud sound or super bass just clean sounding speakers that can still be heard with the top down. Also I couldn't find any DIY to articles to help remove and replace these speakers.