aftermarket stereo

Not impressed with the 14 speaker system. Looking to upgrade/replace the entire system but keeping the factory head unit. Looking for advice from people who have done this already. I am starting with deactivating the factory Sub and replacing it. Also would anyone be interested in me posting...

Hey guys, just bought a 2010 Genesis Sedan 3.8 with Nav. Im loving it so far:o, but that Lexicon stereo isnt doing it for me. This vehicles interface looks like its going to make it a major and expensive pain in the ass to upgrade with an aftermarket stereo. Has anyone successfully upgraded...