Spikes versus Rubber on wood floor?

If you want the speakers to stand as still as possible while playing, spikes are the least likely item to do the
job! Quite the contrary to many peoples belief, they act as a "tuning fork" and excite floor resonances. These floor resonances will be perceived as delayed sound, that is in no way in harmony with the origional sound.
Decouple the speakers from the floor ,and you are more likely to obtain a good result. Don´t just use rubber feet,instead try some "soft" feet that are made from a material that is in accordance with the weight of your speakers. You have to weigh your speakers at their front and back to order the right stuff.Here in Sweden , there is a brand called "SD-foten" , but there are more brands than this one. The resonance frequency of the decoupled speakers should be in the vicinity of 8 Hz , I think.

An Italian reviewer thought he heard doppler-distortion, when using such devices as SD-foten , (because he was able to rock the speaker back and forth). Talk of expectaitions ! Measurments has shown the opposite to be true.Even a Swedish hi-fi magazine that was sceptical at first , did find it possible to place a coin on its "edge", play loud while the coin was still standing. If plain physics would role , instead of marketing "hype" , good sound would be more common.

Hopefully, we will someday see more of scientific research
about hi-fi matters. As it is , many people seem to be in a dark zone, where they are prone to fall for Wodo , because they hope to obtain something positve,but they wouldn´t .
Vibration control is an area, quite possible to apply research to . Let it be competition, but let there be more objective guidelines, on what is best under different circumstances. This could be obtainded, if we,- the consumers, only asked for more of this, and the market, in this case the manufacturers would provide it. As it is ,
I don´t find the situation to be satisfying , especially when it comes to cables and accessories. Spikes has long been a given item , and a holy cow, because nobody questioned it. Now some people seem to realize that there are alternatives, but in this situation , some not serious enough manufacturers turn up , and the confusion goes on.

You may ask us what to use, but we maybe not have the best answer. And it´s interesting to see , that a proposual that is based in a study I do have seen , is easely neglected! Spikes never give an improvement(compared to rigid feet,placed direct on the floor),but sometimes worsens things.Properly decoupled speakers, based on the theory of lowpass and highpass filter theory, often give an improvment, but never worsens things. You may wiggle a decoupled speaker back and forth , by hand . Common sense can be a limit in understanding, Thus , is it possible for the bass driver to wiggle the speaker?