I have a 04 Mazda 6 Hatchback. I found the first amp under the passenger seat. Does the hatchback only have one amp? And where can I find the rear amp, the left or right sideof the trunk (if there is one).

 

The bose systems, only have one amp.

 

So where do I go to get just bass for my subwoofer. Sorry if its a dumb question.

 

Your not going to be able to get much more bass out of your stock bose system. They pretty much come as best as they come. You can try and go to a bose dealer and talk to them. Or you can go and replace your stock sub with a new subwoofer and buy a new amp for more bass. www.crutchfield.com has lots of info. Also try www.onlinecarstereo.com