I'd test it first with a simple ohm meter. You can buy a "cheap" one at Radio Shack for $10-20. I'd also check the connectors.

I like bridgman's idea of a time-domain reflectometer, but I suspect that you won't find many people with one.

Of course hindsight is ALWAYS 20-20. Those wires should have been checked before construction was finished. Oh well, live and learn.

The Rat.

The Rat. M80s, VP-150, QS8s, SVS PC 20-39+, OPPO, Onkyo 703s, Harmony 880 Sony 60" SXRD HDTV