we hooked it up today running one ohm and it worked for a while with the volume cranked up pretty high (25) and then all of a sudden it shut off. Its not really shutting off but its kicking in and out of protection mode back and forth. After that I could turn it up until about 17 before it would kick back and forth into protection mode. We even hooked it up to 2 ohm and it still did the same thing.