Quote (Subwoofer @ Jun 15 2012 11:57pm)
the prefab you have coming will be fine but don't bother mounting them in the sealed box you have already. wait until you get the prefab in before using them.
Why is that? The box will be coming next Tuesday

but at least it has around 2.1 cubic feet per sub so that's a little about recommended so it should suffice or now.