Best speaker cable for non-powered subwoofer?

I'm getting a subwoofer system with separate amp and speakers. Does a subwoofer have any special cable requirements?
depending on the sub, stickwith a cable that;s been dsigned for subs, such as XLO ER12, or Kimber 8 series (8pr,8vs, or 8tc), or Ultralink Excelsior or Ambiance.
oz- thanks for the info... I didn't know there was a sub cable. I'll check into them.