yes the DYE rotor can do 40 balls a second but you'll never really use it on a speedball field.
most fields and tournaments will limit you to around 15-20 bps.
if you still wanna wrap your mind around it, just imagine being on the receiving end of it. the guy pulls the trigger and 40 balls come out. the first one will hit the other player and if he stays in the same spot 39 more will hit him too.
imagine that 39 bonus balls lol.