This is how I added a amplified subwoofer to my JK that did not have a sub. It hits just enough for me. 8 inch sub, Pyle makes one as well. For those that want an extra little bass to balance their music out, not booming. I'm too old for that sh#t anymore...haha. Works great, never overheated on me yet. Completely stealth, where is it? Yes I have a 4 door and that is a 3rd Row Seat in the pic.