About .80 cuft after sub displacement. Before i go an build a ported box in hopes that my RL-P sounds 8x better than it does now, are there any supersubs that will perform well (as in sounding like they are actually getting 1200 watts and not 300 like mine does now) in that box? Its a prefab subzone box, but aside from the fact that it is prefab, its actually pretty solid and sturdy, not one of those chinsy looking q-logic boxes.
