Great question and one that I never gave much thought to. My speaker/stands came with spike so I've always used them. First on wood and now on tile covering concrete.
May I rephrase the question to help the larger audience:
If you have concrete flooring should you use spikes or another material to anchor your speaker stands?
Likewise, if you have wood should you spike it or use a covering over it?
May I rephrase the question to help the larger audience:
If you have concrete flooring should you use spikes or another material to anchor your speaker stands?
Likewise, if you have wood should you spike it or use a covering over it?