first one was a 15 inch l7 on a dx 1000 with a 1 farad cap.... then I bought a 12 inch l7 and I ran the 12 and the 15 for a while.... sold the 12 to my friend and did a custom enclosure and install for him, same story with the fifteen. then I bought an atomic apxx 18 and soon realized that there was no possible way that I could fit it in my ranger. So I bought a sundown sa8 ( current system) and now my new system in the works is 5 sa8s on an atomic 3k... 2 xs d3100's with a dc power 270 amp alt, xs 0 ga., 6.9 cu ft gross box with 76 sq. inches of port tuned to 34 hz...