I think it all depends. If the floor boards are solid, the spikes may help. If the floor boards are not, the spikes may hurt.
Meadowlark K2s
Recently purchased a pair of these speakers. No regrets. Really nice but I do have a question about what they should sit on. They currently reside on a carpet (which in itself overlays a wooden floor). I've read that the included spikes may actually degrade the sound. What is everyone using under their Meadowlarks? Anything that has proven particularly effective or should they just sit on the floor without any spikes/cones? Many thanks.