A member of the online Audioholics forum claims that, in a blindfold test between a Monster Cable speaker cable, and four coat hangers, twisted together to make two impromptu speaker wires, no-one could tell the difference:

“Keeping us blind folded, my brother switched out the Belden wire (are you ready for this) with simple coat hanger wire! Unknown to me and our 12 audiophile buddies, prior to the ABX blind test, he took apart four coat hangers, reconnected them, and twisted them into a pair of speaker cables…