On the tile floor is not a problem. The easier to resolve the problem is to get some spike bases (shoes) for the spikes. In this way, the spikes won't be moved by the vibration and you can even get better resolution this way.
Floor speakers on tile floors?
I am finishing a new house and setting up my home audio system. I am trying to get the best combination of 2-channel audio and home theater. (I have to live in the real world!) I am considering the Dynaudio T2.5/ T2.1 or possibly the JM Lab Mini Utopia and center Utopia. One of my problems is the speakers will be sitting on a tile floor. The majority of the room is carpeted but there is a circular travertine tile around the perimeter. Any suggestions on how to deal with this surface. Can the Dynaudio speakers just sit on the tile floor or would that be an acoustic nightmare? I appreciate any help or advice.