Don't just settle for one auto set up try a few. Try placing the sub in another location like the back wall corner near a seat, cone facing wall or seat. Tweek the volume up above ref level. Try changing phase + or - see which one is best. If still not making difference change settings for crossover etc manually till you get it how you want. When it's run in a bit more you'll probably need to do another set up. Maybe you just need to work at it a bit more than your last sub.