I've been heavy into DiY speaker building for the last 6 months and can't believe what you can create for such little money. Check out what a guy I met two months ago at the Dayton, Ohio Parts Express speaker meet just built for $200.
I built a simple line array with the same 4" woofer Sid used in his computer speakers. 16 per side with 32 3/4" tweeters. They sound amazing for only $40 each with wood and crossover. If you guys want to take your audio careers :D to the next level, highly consider building some speakers. I find it undoubtebly more rewarding than just buying a pair, but others will think differently.