Summary: I purchased these speakers on sale for $50, and since they are a outgoing model it shouldn't be too hard to find these for a great sale price. Overall if you're getting them on sale, they aren't bad speakers.
Summary: The Z520 speakers is the best pc speakers,I have ever owned. clear voice, loud volumn, the only thing I found that was not up to par, the plug adapter, it was weak did not make a good connection with the plug,poorly made. Would I buy these speakers again YES, would I recommend these speakers YES.
Summary: If you're looking for great sound out of computer speakers without a subwoofer, seriously consider the Logitech Z520 speakers. The Z520s produce solid, crisp audio in most rooms except for large ones. The sound is very pleasing. The speakers are heavy at 2-1/2 pounds each.
Summary: I bought these and they sounded great while they lasted, although I never turned them up to max (I turned them up about half way and could hear them throughout my house which was plenty). It was also nice using them as a mini-amp for my headphones.
Summary: The Z520 is an enjoyable step up from a previously owned Logitech system. Better design and sound. Not a big enthusiast of bass, so I like the balance of this system. A previously owned Logitech system(the 333)? was okay until the volume control failed.
Summary: Everything about this speaker is great, except for its speaker-to-computer wire. It's not extremely durable. This is especially likely to be a problem if you use this with your laptop, and need to constantly plug in and take out the wire because you are taking the laptop elsewhere.