windows 8 audio settings help

[COKEDUDEUSF]

I have a toshiba satellite p75-a7200 with windows 8. When I hook up my logitech z 2300 speakers it sounds like crap. Logitech z 2300 speakers are very good speakers so this should not be happening. When I hook up my logitech z 2300 speakers to my iphone or my old dell laptop it sounds good like it should. So this makes me think that their is a Windows 8 setting that is messing up my speakers. What settings in Windows 8 do I need to change my make my speakers sound good?