I'm new to this forum so dont know if I'm posting this in the correct area. Anyways I currently have an Orion HCCA 12.2 and I want to upgrade to a 15" subwoofer. I've narrowed my list to a few subs: Dc lvl 5 or 6, Fi BTL-N2, DD 9500, nightshade 15", or a HCCA 15.2. These subs will be powered by an RF T2000-1bd. Any other subs recommendations would be great also. This set up will be for daily purposes so a bit of SQ with SPL is what I am aiming for. I am still new to this audio thingy so a little help would be good also. My car is a little 1996 Hinda Civic EX. Big 3 is done, 130-140 HO alt (may need a bigger one) and no second battery that's all for now I hope you guys could help me out