it doesn't take abosolute 0 K for the majority of conductors to become non resistive. (-273 C) not that yall didn't know that allready. Actually most metals that you would assume that would be used in speakers reach there "inferred absolute zero around -240ish C" such as copper and aluminum. There are also alot of materials that reach there "inferred absolute zero" much much lower than 0 K. Such as Nichrome, Constantan, Mercury, and Manganin. Not that my 2 cents is worth anything //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif