Does raising speaker cables off the floor really make a big difference?

Ok, I found the big difference , when I raise the cable . and get two shots
Stolichnay , the best Russian vodka , sound became 3 dimension 

I noticed a small difference. Dont spend money if u can at first. Use paper cups or whatever to test it first.

While I will admit I am somewhat of a skeptic on risers.   I can see a slight possibility if you speaker wires are on a carpet that were all charged up with static on a dry day.........But what about hardwood floors (like I have).  Can anyone see a reason to use them with a floor that should not carry a substantial charge? 


I would assume using wooden risers on a wooden floor would be no good.   Would I have to use glass or Teflon?

It's interesting to see prof don't hear difference in cable elevators.  First you have to be able to hear difference in cables first :-)  It's like saying I finished the race first but I crashed out on lap 8 out of 80.  

What about wi-fi?  Suspend them in the air will probably reduce jitter.  Of course there will be people saying jitter in digital don't matter.