[Uffda]

Since I can't fit many consoles upright in my Element, I figure next best is on the side after making sure the chassis and speaker are tightly secured. (better: remove chassis if practical) I have transported with the back down, but shudder at every bump. The wood the speaker is mounted to is so thin and often less stiff due to adjacent grille cutouts. I just think less chance of ripping free if on the side. Stress on the attach points is the same as if vertical. I put the radio on a large sheet of foam rubber over a blanket to help absorb shock and make it easy to slide out. Of course locking straps are much safer than rope and bungies.