Would i just tap into the wiring from the factory sub then setup the jbl amp to my liking?
I have a 2013 Audi A4 with factory Nav and sound system, not the B&O audio system. I want better performance from the lows without loosing the factory Nav. Is it possible to install an aftermarket amp and sub on this vehicle, if so what kind of equipment would I need? Any suggestions on other methods I could use would helpful.