i purchased the panasonic cq-c7301u, everything went good except for the stock sub....its dead i have no idea why. i also have no idea if the stock amp is working. help will be appreciated, thanks

The factory system is a bose setup i think and if thats the case then the factory head unit has something to do with running the factory amp and that would be what is causing your sub to not work, im not sure on this but i have some experience and from what i know about bose systems is that when you replace the head unit you have to re-wier the whole thing and is best to just upgrade everything.