I know how to use torres and all that i am just having a problem getting that tuning out of a 10cf box. Also that doesn't seem right to me. That is really big for 2 15's. Maybe 3 but that seems big for 2. I even asked the Memphis guy if he was sure and he said yes 5cf at 40hz. But i was looking at their discontinued products enclosure recommendations and it says 4.5cf for 1 @ 35hz and 6.5 for 2 at 35hz. So that is why I am confused. This is not my first box. The info from Memphis just seems off to me. I am am pretty good at making boxes. I got my friend a 5db gain just by making him a new box. That wasn't over a prefab. He had his last box built as well. So i am ok at making boxes just the size and tuning threw on this. If any one has any input of the old 4 spoke Memphis mojos please help me out.