Did it die before your wedding day? You definitely don't want to do that! The shield must be used, otherwise you are going to get a lot of hum. Ever tried using a speaker cable as an instrument cable? Doesn't sound good, does it.... OTOH, two hots plus the shield might work alright. You can make low-inductance speaker cables by braiding several insulated wires together in a random pattern, but of course, the impedance is much lower.