Best CHEAP long under-carpet speaker cable


I'm about to put down carpet in an area that will support a second mid-fi system. What's the best speaker cable to go underneath the carpet? The length has to be around 20-25 feet. Obviously the most important issue is that it's relatively flat.

What do you think?
kublakhan
06-16-07: Kennyt
If I am not mistaken, and I might be, but I beleive runnng speaker wires under carpet is a code violation. Anyone sure of this??

What would be the reason for a code prohibiting this? There isn't enough current running through speaker cable to present any danger whatsoever.
As I said, I could be wrong...

It was my understanding that powered lines including speaker wires especially on high powered amps should not run under carpet.... but I could be wrong here!!!!

Please let me know if I am!
Kennyt, I think you are first required to perform this test. Fill the bath tub with water. Take your shoes and socks off. Stand in water filled tub. Now place one of the speaker cable ends in your mouth. Next firmly grasp the other cable in your moist hand and have your wife power up your amplifier. If you are not dead, these wires are safe for under your carpeting. I hope I have been helpful.