I'm looking to upgrade what I have so that I can get better clarity and more bass. It'll be primarily used for music and weekly movie watching. However, I have a really tight budget so this may be a tough setup to tackle. Here's what I'm starting with: - generic stereo soundcard, one output with ~1W/channel internal amp, the input is split with a headphone splitter -unpowered 1"x3" Polk Audio full range computer speakers (came with the PC) -a pair of old Optimus cube speakers with a 4" paper cone driver (paralleled with the polks) -- free from friend -10" Kenwood Tornado (car audio sub), it had crack in the cone so I got it for free (which I taped up), in a 3/4" mdf 0.5 cubic foot sealed box, homemade ($7). -a 250W plate amp powers the sub Here are the restrictions: -I can't clutter my desk/room with tower/bookshelf speakers -University policy says any speaker box can't exceed 14" in any dimension -There are no power outlets available near my listening area -I have $40 What can I do? I know, I know...if I save my money..blah blah...I can buy a $2,000 stereo that will sound great. Hoever I'm a student with $40 and no source of income. What I was thinking is... -replace the 4" optimus's with some high effiency tweeters for $10 from partsexpress, or replace it with a car-audio coaxial set from ebay -get a 2way crossover and use the polk's as midranges -replace the kenwood with a $11 car or home sub that can handle 250watts from ebay Or Just buy a $30 sub from ebay and forget fixing the mains altogether. Well? Can you guys offer some helpful suggestions?