I'm new to the forum, I've been looking on here for the past couple of years when ever I needed some info (Not sure if this is the right section for this topic). I've finally decided to join to see if I could get some help. I'm kind of stuck at the crossroads here. I've been without a system in my car for almost a year now (nothing at all no voice or bass). I took it out awhile back to make trunk space for my newly born daughter. I bought my wife a new compact suv so I've been meaning to wire everything back up. Now I'm not sure if I want to go a different route. I originally had 2 10" Treo engineering ssi in a ported box 2.25ft^3 @33hz facing forward running off an Audiopipe ap30001d. The car is a 2002 bmw 745li. Sounded great, but in know it has more potential. I'm trying to switch it up now to maybe a 4th order Wedge style blowing through the ski port to eliminate trunk rattle. So here are some ideas hopefully some one can chime in and I don't mind paying for a 4th order design if i end up going that route. I only have about 4.8ft^3 before displacement to work with so not sure if some of these are plausible. What ever I don't end up using I'd possibly end up selling.
1. Use the 2 Treos that I currently have and put them in a 4th order and run them off the same Audiopipe or a AB xd1800 or maybe buy a sundown saz15000d.
2. I have a 12" Mtx 9512 that needs to be re coned. Psi quoted me $245 for a drop in kit. D2 2krms triple spiders flat wound aluminum coils. Not sure if it would be worth it or work well in a 4th order ran off the amps listed above.
3. Also thinking of purchasing either a AB 15" xfl or a 15" Treo engineering ssx. Run them off the same amps in a 4th order enclosure. Not sure if I'd have enough room tho.
Any help would be greatly appreciated.