Last thing I would do is to couple the speakers to a wooden floor, as it will act as a sound board and muddy the bass. Cement floor, yes, couple them to.
For a wooden floor you need to de-couple, with some sort of heavy duty (for these speakers) Sorbothane/rubber type pads. If you do a search you will find many types around, but it will be hard for this weight speakers.
Cheers George