I have 2 alpine type r's and a alpine pd.x1600 but my system is keep dying. why?

So I got a factory stereo and I have a rear rca splitter..I have 2 alpine type R in a sealed box, and a alpine pd.x1600 I also have hooked up a kinetik battery 200+ farads..the system works very nice, but if the subs hit really really hard.. the whole system just shut off. why is that? what am I missing?