What are the most common speaker problems? My main one is just it sounds like an extra vibration when the bass is turned up more along with the volume. It only happens in songs with heavy bass. I've beat the speakers a little hard, so am I at the point where I need new ones? It's only been around 5 months I've had the car. Is there anyway to fix them?

To clarify, this isn't a G35, I'm getting one of those soon. I'm currently driving a Corolla with the Premium Sound Option, but of course the speakers aren't a brand name, all I could find is made in Mexico stenciled on the bottom.

 

turn the bass down or get new speakers and an amp

any factory head unit is not the best in terms of sound quality or sound processing

the G has a decent head unit but nothing near what a basic aftermarket will do