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What is the dielectric strength of a pool noodle? With it wrapped around your speaker cable it might suck up all of the special magnetic waves traveling to the speakers and make your system sound flat. But this will only happen if you get something from Walmart and it only costs a couple dollars. If some snake oil salesman was selling the same thing for $200+ it would transform your system.
PS. You will also need to experiment with different colors and using even or odd numbers of spacers on each side. Let us know which sounds best. ;)
Foam pipe insulation.
Cut into 2 to 3 inch long pieces.
Slit down the side allows you to easily place on cables at any location.
I use them to provide physical separation between wires crossing each other but they could easily serve as cable elevators and likely provide a damping benefit too.