So i trying to decide what to do ive already got (2) level 3 15s and i wanted to get some more so what would be louder (4) level 3 15s or 1 level 5 15/18 it depends on if i van get a box for an 18 or not but the thing is ive got a really REALLY small amp it only 1200rms so each level 3 would only be getting 300rms as the level 5'wouod be getting 1200 so i dont know what to do here