Posted March 23, 201114 yr Need a little guidance. Here are my application parameters:Wakeboard Boat (open air for the most part, so no cabin gain/transfer function)4 cf to work withZapco c2k 9.0 amp (2 x 1100w rms)Here are the two options I am considering:2 x Fi Q 15's in a sealed box, approx 4 cf2 x Fi BLs 12's in ported boxFor the 15s I gain cone area but am forced to go sealed. For the 12's I gain a vented enclosure, but lose cone area. It is an open air environment and will be listed to mostly while underway, so there will be a lot of engine and wind noise to overcome.Any thoughts or suggestions?