Is Spiking Necesarry?


I like to move my speakers around a bit for to test how they sound, so I slide them.  I have the Proac D48Rs, they are kind of heavy so with the spikes in it makes it tough to move them.  I haven't consciously tested or compared the sound with spikes or without them.  Does it make a difference?
kclone
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Herbies big fat dots under Thiels on hardwood floor over concrete has been best in my system.  Spikes the worst.

What is the general consensus if any, on speakers sitting on hardwood floor in room above basement. I guess this is called hanging floor but I'm not sure. What about some kind of a damping material between the speakers and the floor?
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Kalai, If your basement ceiling is not finished, you could also reinforce it under your system to make the floor more robust in that area. Just a thought. 
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