Speaker wire isolators - Do they improve SQ?


In our beloved hobby we see at time all sort of gadgets and widgets and we ask ourselves, do the really improve SQ? This is the case of speaker wire isolators. More than often I am seeing on AG systems and even suggested by a reputable seller. My question to this forum is: Do they actually improve SQ ? It is noticeable? What material is used or makes this product workable?  Can I make them at home? I have seen some for sale at remarkable high price and I wonder if they are a cost effectively a sound investment? I have a carpeted floor. Please comment as you like. 
128x128lobinero
Do a forum search for "cable risers". You'll find enough posts/opinions to keep you busy for the weekend....

I have no comment/opinion as I've never used them.
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Are you a vinyl guy? It does help with vibration control, and cleaning.

Yes you can make your own, yes they will work great. I make W, Ms
then a flat piece for the bass. The flat is siliconed to the M or W.
That is where the real dampening happens. Don't use glue, use silicone.
On the bottom of the flat you can use little silicone stick on feet (come on sheets). I use, MDF, or soft wood (fir, or pine) then paint..

Enjoy, making them, it's fun, no they don't have to cost 60-80.00 a pair, to work very well, friggin nuts...

Regards