I just bought a used 2004 Hyundai Santa Fe. I love the factory stereo, it is really nice. I was playing around with the fade and balance one day while waiting for someone, and I have NO BASS on the entire right side speakers (only), in my car. How can this be? I love this strereo and I want to know if this can be fixed or what? It is just the bass everything else works fine, and it is only on the right side. I never heard of this. Someone help, please.