I am experimenting with DIY speaker cable and have a question. How do you make speaker cable directional? And does it make any difference? Please advice.

I joined head-fi for only a couple of weeks and I've learned quite a bit regarding using computer as a source from all of you. Nonetheless, I am still a noob. I just today succesfully ripped a CD using foobar and played it back through my DAC to amp to main speakers. Pretty amazing sound. Since...