Shielding can sure kill the sound of a speaker IC. I'm prone to mini solid core individually insulated with teflon and then a weave 8-24 strands, I like ribbons too. Actually one of my favorites is the combination of the two, The weave is OCC with Teflon and the ribbon is OCC/silver clad with teflon.. I also add a stinger of 99.99% tungsten in an air tube of silicone on the + side only..
Who cares I'll try almost anything... :-)