OK Here it is I want to know it anyone knows about the center rear speaker is it a speaker or a sub? I have read some diffrent things on this is there A amp under the back seat or something any insight on this? Next I want to know if anyone has tryed to put A good sub (Alpine ect.) and amp (under the seat) in there car and if so how they did it. Please dont tell me to search

I have dont this obviously or I would not be asking.

Thanks for the help if you leave it!