I wouldnt cut in to it you cut it wrong your box is done.....just leave it that is how mine is i made my own and i realised after i was done that they are supposed to have holes in it and i asked a guy at a audio store and he says if you really dont want to cut a hole in it now....so if i was you and boxes are expensive...unless you made your own i wouldnt but up to you.....your box