A couple of other cautions as well:

When handling the spikes, both in and out of the package, use caution; these things are heavy and can rapidly fall to the floor unmindfull of anything(like feet)that may be in their way!

And when setting the speakers in place, again be mindfull of any feet(human)that may be in the path of the spikes on their way to a secure footing on the floor!

These cautions are born in the uncomfortable experiences of your other honorable, selfless Axiom board members who have volunteered themselves as human gunea pigs so that the rest of us can operate in a safe and secure environment with all of our toes intact.