i'm thinking of dropping in a small amp to feed my slightly modified factory subwoofer. I pulled the factory speakers and replaced the with Polk 2 ways, but they'll handle much better than the paper coned woofers. My HU has a RCA out to provide sub signal, but no dedicated amp fed lines. Is the aux power in the rear DS powerful enough to run a small 2 channel amp? Could I just tap into that power w/o burning down my LC?