hi im a newbee to the whole world of car audio set ups. i have a active dual bass subwoofer putting out 800watts a 600watt amp and 2 6"x9" putting out 260watts each. i have to standard 4" 40watt speaker in the doors i want to upgrade these to match the rest of my system but was told by a friend that i have to get speakers that will put out 260watts each, is this true or what will be sutable for me