I have a set of twisted pair RCA ables I got with my amp install kit that I plan on using for my front amp/speakers. I also have a 12' gold plated RCA pair I had on a previous installation but I'm unsure of their origins(whether they are twisted or not) They look like standard gold plated audio RCA's-"black coating" Think it's OK to use these for the sub amp ?

 

If its twisted pair you should be fine.

 

As long as they are in good shape (no cuts or pinches) and connect well, you shoudl be fine.