why spikes under speakers???

When a speaker produces sound, a driver moves back and forth. It takes energy to move that driver. If an enclosure is not secured to the ground in some way, the moving driver will also cause the cabinet to move slightly. When the driver causes the cabinet to move, it is using some of it's energy to move the cabinet instead of moving air. You want the cabinet to be secured to the floor as best as possible. Try pushing over a speaker that is sitting flat on the floor and then try it with a speaker properly set up with spikes. If it's done correctly, there should be no movement. Without spikes, the bass will be more limited than with spikes. It does more than that though. It has nothing to do with air underneath the speakers. Otherwise, stand mount speakers would be worth nothing.

Actually, woofers can move enclosures. Try putting your cell phone on vibrate mode and set it on the counter. Watch what happens when it rings. It doesn't stand still..

Suspending a speaker by ropes is the same as using spikes. You just validated my point. You are using points to keep the speaker up, just like you are when you use spikes. A cell phone is a fine example. In both situations, you have two enclosures that have moving parts inside. Whether off balance or not isn't the point. This is simple physics taught in high school. Whether the movement is significant or not, is another discussion entirely. The point is, there is movement.

There's a second class????? It's amazing they let engineers graduate without going through the second class!

We can argue all we want, but at the end of the day, my setup sounds better with spikes.

Get me into trouble? Yes, I could cleary see how posting on an audio related forum could get me into trouble....

It's clear by your response you believe you are much more intelligent on this subject than me, so we'll leave it at that....