Re: Sub size and space question
This is all up to u and to decide how much space u can and will give up. I had a coupe fit 2 12s but found I had no place to properly mount my high or sub amp then even less space to fit my battery. Also more speakers means more cash flow out; alt batts etc. So I think u should do a mock up box made of something somewhat sturdy and place it and then plan out where u want to pit all the other excessories and go from there. Planning always helps but there is almost always something that comes up in final installation.
HU: Eclipse avn726e
Front stage: Infinity Reference 6.5, massive tweeters
Highs amp: Sundown sax 100.4
Sub amp: Sundown saz 3000D
Sub: tc 3000 3hp SPL recone
Electrical: Ohio 300 amp alternator, Knu 1/0 (2 pos runs), big 3