I'm getting into hifi, but being a kid (and thus having no money) I have to rely on times when I can convince my dad to buy stuff, and even then my budget is absolutely bargain-basement. The current setup I'm using is stuff I dug out of a closet, the following equipment:
Infinity SS 2001 loudspeakers (purchased in 1996)
Denon DRA-835R stereo receiver (purchased in 1992)
Technics SL-50 CD changer (purchased in 1992)
I don't often use the SL-50 as my main source is my computer, running Winamp 5.54 with standard MP3 source material (most of the stuff I listen to isn't available in lossless form, at least not in this country) through a Creative Xmod. All my interconnects are Monster Cable RCA-RCA, and my speaker cable is just plain copper wire.
So my question is this: With the lowest possible budget, maybe say 200-300$ US, what can I replace that'll make the biggest difference in sound? I've been looking at the KEF iQ1 speakers, but all the hifi stores in my area pretty much only stock B&W speakers, so I can't really audition anything. Would I even be able to get a better speaker than the SS 2001 for only 300$?
Also, regarding the receiver: it is technically a home theater A/V receiver (with an AM/FM tuner no less), but I've never listened to my speakers with a different amp so I can't tell...
EDIT: Oh, and if it helps, I listen mostly to techno, drum n bass, etc.