Hello, my surround sound suddenly stopped working. I feel nor hear any bass. I never touched my equalizer since I had the car for 3 years. The front speakers work but the left rear speaker isn't producing sound only the right rear and front of the vehicle speakers. I don't even want to drive the car anymore until I get it fixed. What could be the problem? And it isn't Harmon Kardon surround sound brand either. I'm assuming it's basic. I even went into setting and turned the bass all the way up and I still don't feel or hear any bass from the vehicle. What should I do? I don't have patience for 1-5 weeks repairs I need ideally 1-3 hour fix. Any one experience this problem before? I must add that my car was in impound for over 6 weeks just got it back yesterday.