Replying to Best Bedroom or Dorm Speakers For $75

Hey NS, im wondering what you guys would recommend for computer/ ipod speaker for 75. size doesn't really matter, no need to spend more money for portability. looking for 2 to 4 speakers and a sub with the best sound. Doesn't need to be able to go really loud but needs to sound decent and a sub that hits bass notes that wouldn't be too shameful compared to my car (12" kenwood excelon). 10/10 to any specific recommendations, just need to know where to start. I've looked on crutchfield and a few other sites but it seems there are only either component home audio systems or ipod docks that are recommended. Thanks!