Its actually space I am after, with my current set up right now, I cannot sue my 3rd row and the box is a bit ch to remove ( too heavy and to big), i was thinking of doing 2 sealed boxes around 16x16x13 which should give me about 1.5 after .2 displacement and if i need the 3rd row i can remove 1 box and still run 2ohms, I don't do competition, i actually got metered just for fun and got 143db, so if I would loose only 3db it might be worth trying so i can regain my 3rd row if needed.

Thanks for posting