The 2000's have 7.5" woofers and radiators, the 4000's step up to 8" woofers and radiators. I wouldn't suggest them for movies or any bass heavy music. I had a sc4000 and it couldn't keep up with my music or movies. You might be ok with it in a room that small though. Not sure which you'll like better, but you already bought it, so give it a shot!