To tell you the truth, some advice I take as the gospel and some I take with a grain of salt. I am sorry to say that I was taking the recommendations for sturdy speaker wire with a grain of salt. Well you can't always be right. :o
However, I noticed that one of my FXi3's did not seem to match timbre with my other Polks. My first thought was that the placement was making it sound a bit different. When that didn't change anything, I immediately blamed it on my hearing thinking that the back speakers might not sound the same as the others to my ears. Finally I just got a wild hair and decided to check what could be different. Then I remembered. That was the only speaker whose wire runs through the ceiling and the only one that I had someone else install.
What I discovered when I examined the speaker wire running through the ceiling was that it was about the size of a thin piece of yarn. I had never seen a wire so skinny!
So at 92 degrees in the shade (must of been boiling in the attic), I Lugged my reluctant body up to the attic and replaced the dental floss cable with Monster Cable that I had a large spool of. Cursing, sweating, and itchy from insulation, I eventually was able to turn my stereo back on.
What a difference! Not only does the timbre match perfectly, but everything just seems to sound better. I know...I know... One speaker wire doesn't make everything sound better, but to me, all is good in the world. :D
So there you have it. A testimonial from a true novice. Cable does change the sound.
I'm a believer!! Thanks again for giving me the knowledge to even check that area.