xUnbrokenx

Hey im new to the board but i have been looking around alot lately and i thought id ask a question that someone might be able to help me out with. I have 1989 gxe with the bose sound system and whenever i turn the volume up past like 15, the volume in the back speakers sound extremely louder then the front ones...i know they are bigger speakers back there, but it sounds as if the front speakers are just there for the highs and no mid-low end sound. which makes it sound kinda retarded, but i haven't been in another car like mine with the bose system so i cant really compare the difference, so maybe someone can tell me if this is normal, or that im retarded and should just leave it alone. alright well thanks for your time and help.