This actually has nothing to do with the stock speakers that come with the Civic, as I replaced them with a set of Alpine Type X's about six months ago. The problem I'm running into is noise when I drive over speed bumps, road bumps, or potholes which causes my left speaker seems to make a static like noise or "jump" in volume. I'm fairly certain it is not the volume of the receiver itself that is jumping, but maybe the vibration caused by the bump causes there to be a loose connection in the wiring of the amp to the speaker or the receiver to the amp? I'm not exactly sure what is going on and if this is even worth bringing to the car audio shop where I got my setup installed if this is something I can debug and fix myself. It's not the end of the world, but it is super irritating at times.