Just like your test for rears, you again completely missed the point. It ISN'T the speakers that make anything an SQ setup, but the installation. Exactly why your front / rear test failed. Look up cancellation, interference on wiki. Read it. Make sure it is in reference to waves. Then ask a logical question regarding the interaction of the fronts and rears WHEN THEY PLAY THE SAME FREQUENCIES. If you truly read it, I doubt you'll even need clarification, but I guess you probably won't believe it either. After all it is just simple Physics. Read the deadener page that was linked earlier as well. Hell read it 3x. Don't ask another deadening question or for clarification until you do. When you do ask, CITE what you don't understand or need more clarification on. You will be surprised at how much more helpful the answers will become when you spend 5 minutes doing some quick research first. That btw is the appropriate way to ask questions on a forum. If you really want to know how I feel, try to join www.corner-carvers.com. READ their terms and conditions. A light bulb should go off on how to actually get help on a forum. That one is by far the best run forum thread wise I have ever been on. sorry to ask, but i did look that up on wiki, i'm not sure if I was able to find what u where exactly referring to but I read about cancellation and interference, and I already knew what it had listed about cancellation and I did learn a little on interference but how does this affect the difference in sound whether you have 2-4 speakers, because as i see it the rear speakers are 8 feet away from the front speakers so wont there frequency's arrive at a different time than the front which would make phase barely matter? I know the direction the speakers are facing matter but I can't do much to this car but I will make new holes for my own car. I believe you I just don't fully understand, I don't like to do something just because people say so, I want to fully understand as you do, and wiki didn't help me much. please enlighten me, since you are much more experienced.