nope the write up says that the regular 16-18 ga speaker wire is to extend the shield ground ("because you're not sure where you're going to ground the braided wire at.") so just go to frys and check this wire
http://shop3.outpost.com/product/3550664/#
frys is on 2300 West Baseline Road in tempe, I go there every year on vacation to buy stuff I can't get here in kuwait.