Woohoo, a thread I can put more than my .02 in...but I won't put forth that much work. Coming from a guy who has subwoofers the same size as his computer monitor and amps big enough to trip my circuit breaker, I could tell you a thing or two about "big speakers" running off your computer.
If all you want is stereo sound, your computer, as it is, will be fine.
Buy yourself a single male 2.5mm stereo mini-jack to dual male RCA cable.
Monoprice.com has very good cables for the money! They have lengths up to 50ft, fully shielded. (Shielded is key since these are unbalanced connectors.) Monoprice also have live customer service chat. I've had excellent service from them and their high quality cables are the cheapest I've found.
http://www.monoprice.com/produ...mat=2
To compare prices, that 6ft monoprice cable is less than $3 and is fully shielded. This no-name company sells one that's 2ft shorter, not shielded and is about 4 times the price.http://www.discountcarstereo.c...=1111^DON'T BUY FROM THIS PLACE^
Now you need an amp
The cheapest way to do this is to buy a used, but high quality reciever. Since HDMI came out, a lot of people have been dumping their non-hdmi recievers...even though they are still very good. It's very likely that you'll be able to find a 7 channel receiver for around 100 bucks.
Look for one that has the 7 channel stereo DSP option as that means when you get more and more speakers, you can hook them up and have them all play the same thing. Meaning, louder music at your party.For example, here is a very nice one. I have the pervious year's model (1014)
http://cgi.ebay.com/Pioneer-VS...%3A50
Speakers!
It all depends on what goals and limitations you have. If you have a lot of room and need a lot of sound, I would suggest used Cerwin Vega towers that are in good shape.
If you only have room for bookshelfs, I have 6 of these and they treat me very well.
http://cgi.ebay.com/Infinity-B...%3A50
But if you get bookshelfs, regardless what they are, if you want to listen loud, you'll need a subwoofer. With large tower speakers, like the Vega's pictured above with 12" woofers, you won't need a subwoofer.
So add it up.Cable = $4-5Reciever = $75-125Speakers = $50-150So anywhere between 130-280...280 if you buy new cheap stuff.
This was my setup from years back. Old sony prologic receiver, Monitor Audio RS-1's, and an infinity SW-12 sub that you can't see.I used a Belkin brand cable I bought from Best buy for around 10bucks. Too bad I didn't know about Monoprice.com then
Modified by Looneybomber at 10:21 PM 6/10/2009