I was on my own to take them out of the boxes and put them in place and I can give you a technique that works well without committing the least shock to these magnificent cabinets.
To take them out of the box, you have to lay the box on the floor, back side against the ground, unblock the bottom of the box, put the box upright and remove the box by lifting it upwards gently.
Then, you have to lay the speaker face behind on the floor placed on a very thick fabric and pull this fabric to the location then lift the speakers gently.
Finally, if you have SPIDs, you put the speakers upright on a large wedge, aim for the spikes and then you tilt the speaker a little to remove the wedge and you just have to adjust the plumb and the orientation.