Silver was used by B&W themselves in some limited editions of some of their speakers. Wiring is a weak point of almost all speaker systems. I don't think substituting new wiring would degrade resale in the same way as changing the crossover, etc. It is a passive mod. in that it essentially leaves the speakers just as they were. Call it an upgrade rather than a mod. and you would be telling the exact truth. There are other good wire ( besides silver) available, do some research and go ahead if you are good with a Sod. Iron or know someone who is.
