Spiky, based on your post, i guess you are unaware of exactly what coaxial cable is. It is a cable with a center conductor, surrounded by an insulator, surrounded by another conductor called the sheild.
I never said svideo cable had 2 wires, i said it has 2 coax cables in it, which is a total of 4 conductors. Remember coax cable is 2 conductors. All video signals, weather composite, component, or svideo, uses coax cables. There is NO such thing as digital coax...thats just marketing talk.
Finally, An ADB cable does not contain any coax, and is probably the worst thing to use for svideo.
Spike, you should brish up on your terminology, your as confused as other people.