7.1 Speaker System

[Silent]

I just got a 7.1 Speaker System today, it is the Inspire P7800 model by Creative. Well I hooked it up and I got sound coming out of all the speakers, but I'm noticing that the 2 front-center speakers are playing everything substantially louder and at a much better (the regular) quality then every other speaker. The 2 speakers on each side of me and the center speaker are all very quiet and the quality is lower..

I have tried adjusting plugs, fooling around with Sound Device stuff in Control Panel, but I can't fix it. Anyone have any ideas? I went on Creative's support site but the product I have isn't even listed on their site.

Kind of bummed out since I spent $100 on a 7.1 system that is basically acting like a 2.1