I have the 6 speaker non Bose Stereo System. Single CD player.......do I have any amp at all? Can I add a 10inch subwoofer and amp to this system without any other mods..........I don't want to spend a lot of cash, and I'm very happy with the stock sound, just want to add some base maybe.

Thoughts?

 

the amp is inside the head unit, not familiar with any other amps in the car, and not sure how that works for an extra speaker, probably possible tho.