BattleCruiserCommander Each prism has 3 shooting through them, and the center one has even 4 shooting through them.
And as I said, equal beams are most efficient to merge, not constantly adding smaller beams.
^ This design, directs 2 beams in a single prism, of equal power, having the best result.
2 of these combined is nearly more powerful than your oversized inefficient beam lol, being only a fraction of the cost.