I would not jump all over the Dayton High Fidelity. Specs wise, it seems to out perform the Titanic in every aspect other that Xmax (just a couple mm less). I am not bassing on the Titanic either, as I own one and it sure can take a beating. However, I am in the same boat. I am building a box with (2) 12" High Fidelity Subs. They look like they can reach lower frequencies but who knows. Any other opinions on these, I would like to know as well.