The advice to start with good power cord or cords is valid provided there is an equipment to attach it to. And if someone wants to try and understand the science that goes into designing cables, better call Jim Aud from Purist or Stealth people. They would fill your head with this stuff in no time.
A New Believer
I have listened to many systems over the years, and have never appreciated the difference speaker cables can make to a sound. In fact, I was so skeptical of the sound changes they can make that I have always not bothered with any special type of cables, generally going for generic (and dare I say it) roughly made ANY copper wire plugged in to amp and speaker. Well, imagine my surprise when I decided to do a blind test and listen to what difference cabling can make. Wow, my Vand 3A Sig's had been getting strangled! (some of you guys may want to strangle me if I told you what connects I had been using). So I am now a firm believer, cables DO make a difference.