I have a blue rca labled (sub) on the back of my HU and its just one rca, and the 2200D amp that i have has a switch that says slave next to it with only one rca plug in. So i ran one rca to both and the only way it would work is in slave mode. and none of the other controls on the amp would work. It was all controled by the HU. Sould i put it back this way?? I call AQ to See what the ohms rateing was on my Subs and he told me that the rca on the amp was to install a second amp. If that is true then how was it even working in the first place. thanks