I am about to construct a couple of speaker stands to my DM601 S2 and I
don´t know if I should use spikes between the stands and the floor. My
floor is hard (without carpet).
In case I should use them, should I use 3 or 4 per stand?
What about between the speakers and the stands? I have also seen spikes
there.

I have found contradictory information on the web about this topic, I
would like to know your opinion.
Thank you