Thinking of getting one Diamond Audio TDX 12D2 and wiring it up to one ohm. i would power it with the diamond audio d5 1200.1 how loud using a ported box with specs from manufacture in a trunk of a car could i expect to hit with a 1.5 farad capacitor?? is this sub really good for SPL and decent in SQ? is there any cheaper amp i could power this sub with? also my headunit is an alpine 9830 if that makes anydifference.