So I picked up a Yamaha YST-SW030 from a friend of mine who never used it in the home theater system he bought, and I was wondering if it could somehow be used on my computer sound system. I have a small Altec Lansing setup right now, with two small speakers and a medium subwoofer. I'm afraid I don't know too much about how speaker/sub systems work, so advice or directions would be greatly appreciated!
For the OP: It's totally possible. You just need a headphone jack to RCA cable and you can hook it up. I've done it. The amplifier is built in (hence it's an active sub).
And it would sound much better than a car audio subwoofer. And yes, I also have a car audio subwoofer hooked up to my laptop, but I rarely use it since home subs sound much better in my room. Surprise, right? ;)