Pros: Clean, clear and crisp highs, tight and deep low-end
My previous system was the Altec Lansing VS4121. I'd like to describe it briefly for the sake of comparison: it has a 6.5" long-throw front-firing subwoofer in a wooden cabinet with the port on the front as well. The satellites have a down-firing mid-range driver (3" I think) with two front-firing micro drivers as tweeters. The right-channel satellite has 3 knobs: Treble, Bass, and Volume - and a power button, which I never used. I unboxed them, turned it on, and left it on. lol
On my X-Fi Titanium HD, I thought that the Altec Lansing VS4121s had a FANTASTIC sound. Excellent tight and deep low-end (no boominess or distortion whatsoever), and the mids and highs were clean and clear (and crisp). However, then I upgraded to the Klipsch ProMedia 2.1. lol The Altec Lansings have an total of 31 watts of available power: 6 watts per satellite, and 19W for the subwoofer. I used to think that this was more than I needed, but the Klipsch ProMedia 2.1 has 200W: 35W per satellite and 130W for the subwoofer! Not only does this obviously have a more powerful sound when I listen to it, but the mids and highs are noticeably clearer and cleaner and crisper than the Altec Lansing VS4121 system, and the low end is definitely superior as well. Oh yeah, and I forgot to physically describe the subwoofer: it has a side-firing 6.5" long-throw subwoofer with the port on the front. I don't know if this makes any difference, but maybe it does. Oh yeah, and it's MUCH heavier than the Altec Lansing VS4121's subwoofer! That's probably due to the amplifier. Another physical difference I noticed is that the subwoofer speaker itself has a bowl-shaped dust cover (that's the thing in the center that's usually a dome) while the Altec Lansing VS4121's subwoofer has the typical dome-shaped dust cover. I don't know what difference this makes if any, but it looks cool.
I bought mine used through eBay because I wanted the older version that has the plug-in satellite design (the speaker wires can be replaced). So, I also recently upgraded my satellite speaker wires to some custom-made 16 AWG Monster Cable speaker wires (very nice ones with very nice Neutrik Rean plugs and the bare wire ends are soldered using Silver solder). These wires were made by a professional on eBay. It's the premium 16 AWG Monster XP® speaker cables cut from a spool with these Neutrik Rean plugs on one end and bare wires that are soldered together on the other. They're soldered so that you never have to worry about the strands becoming frayed and also so that the signal is strong and evenly dispersed to all of the strands right at the very beginning of the wire. This way, the signal doesn't have to travel down the strands a ways first just to eventually get dispersed or distributed to all of the strands to eventually become an evenly-distributed signal on all the strands. Instead, the signal starts out that way!
The ProMedia 2.1's stock wires are 22 AWG cheap aluminum wires with the typical thin and cheap jacket. The plugs on the stock wires aren't even gold-plated. They're just cheap wires that are nothing special at ALL. The Monster cables are truly monster cables. hehe They are VASTLY superior, they're bigger, and they're heavier. The sound is quite noticeably better as well. The mids and highs are much cleaner and stronger and clearer, and I'd even say that the sound is more natural and maybe also warmer. The sound stage has been improved as well; it's hard to explain what I mean, but it's like I have a superior stereo sound or something. So yeah, now my computer's audio system is about as good as it's ever going to get, and that's fine by me because I seriously cannot afford anything better (nor have ever been able to). Therefore, I'm 100% content with what I have now.
BY THE WAY: come to think of it, these differences that I experienced with the better wires are basically what I experienced when I upgraded from the Altec Lansing VS4121s to the ProMedia 2.1s. So, don't feel bad if you can't upgrade your speaker wires! I'm only mentioning the speaker wire upgrade in case you're able to because it's worth it! You'd be better off making your own though because GOOD custom wires for the ProMedia 2.1s (like the Monsters I found on eBay) are becoming harder and harder to find. Fortunately, it should be a piece of cake to make your own, which I didn't know until very recently. Buy like 20 or 30 feet of Monster XP wire (maybe from Crutchfield), buy two good plugs (like those Reans, I don't know where to get them yet), get a soldering iron and some Silver solder, and go for it! Cut your desired length off the spool, use a wire stripper to CAREFULLY strip off about a half an inch of the jacket at both ends (you don't want to cut into the strands of wire), put good plugs on one end (they'll probably be twist-on) and use Silver solder to solder the others and then you'll have yourself some custom speaker wires for your ProMedia 2.1s! Nice. :)
Oh, there's something I should mention about the ProMedia 2.1: you might read some customer reviews (and maybe some professional reviews) that the power switch is on the back of the subwoofer, which is where the amplifier is located. Some people complain that this is bad because it's difficult to reach, but here's the thing: this speaker system is not supposed to be turned on and off every single day. You just unbox it, turn it on, and LEAVE it on. The only time you should turn it off is if you won't be using it for like a week or more (such as going on vacation). So, the location of the switch is a smart design; it reduces the chances of the owner turning it on and off every day. Turning it on and off every day can cause a premature failure. I mean, I'm sure they could have made it possible to turn it on and off from the pod, but they chose not to, and for very good reason.
Anyway, so yeah: the Klipsch ProMedia 2.1 system is an extremely awesome 2.1 computer speaker system (especially if you can replace your satellite's speaker wires)! If you can't replace your satellite's speaker wires though, then don't worry because to be honest with you, the sound I was getting was so good that I was truly convinced that the superior speaker wires couldn't make any difference. The new versions today have hardwired wires, and so you'd be "stuck" with them, but again, don't worry about it. You won't find a better 2.1 computer speaker system! So, stop looking and buy it already. I promise you that you will love it.