I finally installed the stetsom 7KD (1 ohm 12 volt) and it ran very well but just yesterday it began going into protect.It throws a protect with one blink and the manual tells me that its a short circuit or below impedance.I'm running the amp at a half ohm nominal. It starts doing this when i roll into heavy bass. I triple checked all of my connections and everything is solid, voltage is in mid 13's when it cuts off.