I just bought an 03' Audi with a Bose sound system which I thought would have sounded awesome. The music I play sounds flat and the bass is really weak. I have tried adjusting the treb, mid and bass but it's hard to notice any change at all, even when I put the treb and mid at -6 and the bass at +6. The music seems to have no range, anyone know why this might happen? I drove a Toyota previously and I could get the bass to shake the mirrors and it sounded great.