Hey yall and hello. My car has 4 6.5in speakers. 2 on the door and 2 in the rear. I dont want to add a huge sub box in my trunk because thats too much for me. But i just want to upgrade the speakers i already have. I recently installed a Kenwood excelon stereo with a touch screen. My bf said that my speakers will sound alot better with this new stereo, and they sound better but not what I was hoping for. He said maybe I need 6.5in subwoofers. So I did a bit of looking online and I think those 6.5in subwoofers need to be put in a box, is that true? I thought I would ask you all before I get something I'm disappointed in. I just want the most bass I can get out of 6.5in speakers. Thanks yall