I recently bought a 2009 Si. It has the upgraded Navi system in it, and has sub control on there. Im wondering if I can hook up an aftermarket sub to that, like I would to an aftermarket headunit. Im not sure of the specs on the unit. I have a Diamond sub, Alpine 1.1000, and need a cap.

Is it possible to just disconnect the factory sub and run an aftermarket one?

Thanks

 

just need a line output converter

 

alright cool. thanks.