lowbass

Sorry if this is the wrong place but i am a newby here. I have a 23' altima with bose and hooked up 2 subs and an amp using a LOC but i get a low bass hum unless the car is off. Would it matter if i hook into the system before the bose amp(right now its after) or do i need to kill the mics in...

I have an 04 Corolla with an rp2000 on 1 zvx12v2 sub. I bought a pretty big dual 12 box tuned to 32hz. The port wraps around the back and is as long as it can before it chokes itself, i had 2 sdrs in it at 1400w but on the lows I could tell they weren't doing what they could have. I bought a zvx...