Both being ran off a Elemental Designs nine.1, @ 2 ohms (900 watts RMS @ 12.4 volts)
The 2 12" will be in 3.0 cubic ported prefab box but its still a good box 3/4 mdf well built and ported.
The 15" single will be in a custom box around 3-3.5 cubic feet
Eventually either setup will be on a Alpine MRP1000 @ 2 ohms once i get more cash.
Also, what exactly is the difference between the Fi Q and BL? I noticed the Q has more Xmax wouldn't that make it louder? Which one is better for SQL? I know the Q is a SQ sub but can it get as loud as the BL? Or maybe even a Audioque HDC3 15" Which setup should i get