50 watt speakers with a 8 inch subwoofer

This is a pair of 6x8 speakers and a pair of 6x8speakers with a tweeter connection for the front and a 8inch subwoofer these came out of my 2010 ford edge limited they work great I just wanted to upgrade my stereo system . infact my wife asked me why these sound great.my excuse was I want to upgrade so I got NVX speakers and subs and amps for my Edge plus I'm going to list my stereo as well it has Sirius and navagation