Nothing wrong with making your own cable. In fact, I recently made 50 ft. of braided cable using an old outdoor extension chord I found at a thrift store for a couple bucks. Three lengths of 18 gauge copper strand wire braided with a drill and cut into 25 ft. lengths. The sound is great. How much would a similar length of silver wire cost? Would there be an audible difference? Someone who paid many hundreds of dollars for two speaker cables would sure as hell want there to be a difference. He might even think he hears a difference. Many say the difference would be negligible. I feel that as long as the gauge is large enough for the current to pass through efficiently, the amp will be happy, the speakers will be happy and the listener will be happy. Currently, on my Gershmans I'm running doubled-up lengths of 16 gauge, low-inductance speaker wire. Works wonderfully!