I recently upgraded my front door speakers and they have been working great but all of a sudden both drivers and passenger side speakers stopped working. The wiring is fine, the door looms are fine, the fact that both stopped at the same time suggests something else. I have checked the whole fuse box on drivers side but everything is fine. The front speakers as far as i am aware are run from an internal amp in my RNS-E my fear is something may have gone internally wrong with this? is this likely Help im hoping its something simple. Cheers in advance.