I have my M3 Turbo S's on their spikes on a thick rug over a wooden floor on a concrete basement foundation. The important thing is that the compression tweeter is at level for me. I was thinking of resting each speaker on a stone/marble or a hardwood slab, but that would elevate the tweeters.
Of course, I could then put my listening love seat on 2x4 blocks - which I did with my Acoustic Zen Adagios.
Of course, I could then put my listening love seat on 2x4 blocks - which I did with my Acoustic Zen Adagios.