There is nothing wrong with that wire. 16g wire is plenty for 100w x 4. I personally love 5 conductor wire (that is like 8 conductor) it makes installs so much simpler and neater in most cases. The 5 conductor is sweet cause you can use the 5th wire for remote. People who use 12g on mormal speakers are doing nothing but wasting money. You guys with 2500w sub amps and using 8g on your subs is a waste as well, 12g is more than enough with that power. As for it not being loud enough, I run 3300w rms of power and you wouldnt think I ran more than 500w, but talk about head room. //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif