I just got a nice donation of big 13.2v power supplies, used for led floods. Do I need to bother bucking it to run resistive 12v pixels? I'm used to buck converters needing a minimum 2v drop, and I'm not used to bucking 50 amps' worth of current. Was hoping to just run 30 feet of wire and that that wouldn't wear-and-tear the pixels too quickly.