Why I buy this one ?
- Six-speaker system with patented subwoofer design delivers twice the bass energy of conventional designs
- Innovative satellite design with rotating pedestals that allow for wall or desk placement
- Internal power supply eliminates bulky wall adapters
- Easily hook it up to your video game console with our included adapter cable
- Total output power: 71.2 Watts RMS

What our customer's say!

"Great cheap speakers", These are great speakers! I bought them a few years back for my girlfriend's computer, but they were nice enough she decided to use them for her TV to watch DVDs instead. The sub is surprisingly strong for its price and size, and the speakers themselves don't distort at high volumes. It's a good purchace for someone looking for good, small surround on the cheap.

"Good bang for the buck", Decent budget system. Surprisingly deep bass. I've had this setup for three years or so and do not regret buying it at all.

"Incredible product!", I have owned these speakers for four and a half years, I bought them from amazon for 45 bucks. And they are just incredible! The bass, the satellites and everthing. And it's still working great with my computers. If you can still find them in the market just buy them, great investment!!!

"Excellent Product", Great product! It was shipped out quickly & in great condition.
Thanks

"For short money can't be beat!!! ", I,ve had these speekers a while now and they are still going strong!
Great bass, almost too booming at times, but more my fault for have the separate bass vol control on the back pegged. My brother-in-law heard them last X-mas and we had to hunt for them so he could have a pair.
I've heard that earlier runs of these speakers had internal amp failures but
mine are coming up on 2-years old and work fine. Logitech makes a nice balance of money -VS- quality. I know there are other brands that sound and are rated better but they also cost much more than is justified in my opinion. The only reason I give a 4 star is that slightly weak mid-range is hard to ignore. The title says it all folks.

Read this reviews before You buy...

"The best sub $100 5.1 speakers by Logitech", I've bought 2 of these since they came out, and I couldn't be happier with them. The sound quality speaks for itself, and the construction of these speakers is both classy and functional. The feet are reversible (so you can mount them on a horizontal or vertical surface), and have rubber grommets on them to cut down vibration against whatever surface you mount them to. Those two features alone make these some of the best and highest quality speakers you can get for the money. Since I've had to mount my speakers in a variety of positions on a variety of surfaces (including a couch and the back of a computer chair), I can tell you that the adjustable feet on these speakers are definitely one of the best selling points for them. Most speakers in this price range come with feet that are only meant to sit on a desk. Some don't even have feet, just little rubber pads at the bottom of the speakers.

Also, compared to their replacements, the X-530, the Z-640's have seperate volume controls for the fader and the center speaker. This makes it very easy to focus the sound on the center of the room without having to rely on a sound card's equalizer. Also, the Z-640's have a button for Matrix mode. Matrix mode takes the stereo signal and balances it between the front and rear speakers, which is a great way to turn a stereo source into a semi-surround sound experience. This feature is missing from the X-530, but is found on Logitech's more advanced Z-3500, Z-3500e, and Z-680 (along with the controls for Center and Fade). In fact, the Z-680 has much more in common with this set than any other speakers made by Logitech. The only difference is that the Z-680 has a built-in Dolby Digital Decoder. And you can buy the Creative Labs DDTS-100 (a standalone Dolby Digital Decoder) for about $120, add it to these speakers, and have yourself a functional replica of the Z-680 for $100 less.

Sure, some people don't like the extra bright blue LED in the middle of the center speaker, but a piece of black electrical tape will easily cover it and blend in with the speaker so well that you'd never know that LED was there.

Because of their excellent sound, great design, super price, versatile mounting, and their fader and center volume adjustments, these speakers deserve a 5 out of 5, and are still superior to the X-530 that's supposed to replace it. Just do the math, 640>530!

Now that Logitech stopped making the Z-640, the only comparable replacement for them is the Z-5300 or the Z-5300e. But, both of those systems cost 2-3 times as much as the Z-640. So in short, if you've got these speakers, you already know how good they are. If you're looking at getting a 5.1 speaker setup, and you want to spend less than $100 on quality speakers, you need to hunt down a set of these. You'll thank me as soon as you try them.

Pros:
Excellent sound quality
Versatile mounting feet
Seperate controls for Center volume and Front/Rear Fader
Matrix Mode for converting stereo to surround sound
Front Headphone Jack
Sleek and subtle design
Includes an adapter for Stereo RCA inputs (from a game console or other stereo source)

Cons:
No longer produced
Bright blue LED in the middle of the center speaker (which is easy to hide with a piece of black electrical tape)
Replaced by the sorry X-530's or the expensive Z-5300 and Z-5300e

"ok for the price...but", i've owned many an item from logitech and have never had a problem, until now. i'm no speaker expert but i know i've definitely heard better quality sound. i'm one that likes to blast music for the whole world to hear. but with these speakers, once the sound gets too high you can't decipher the lyrics. needless to say i've had this system for less than a year and the subwoofer just blew out on me and i'm ticked. this time i'm going to spring for a more expensive system that has a reputable sound. all in all it was a good buy for a beginner like me, but i would have liked to be able to hear more from than less than a year's worth of music.

"Great bang for the buck", For a 5.1 system, these speakers give you great bang for your buck. The sound quality is not amazing, but in this price range, I'd say it is hard to find something comparable. Recommended.

"outstanding for the price", i bought these based on the reviews here and i am not regreting it one bit. i wanted some 5.1's and these are simply oustanding, no static, nothing but clear sound and deep bass.

"great for xbox", I used the adapter that came with the speakers to hookup my xbox and it sounds great. Remember to turn on Dolby 5.1 sound support in your xbox settings. What an improvement over my TV and projector speakers. The small speakers have limited power output, but still great for $40! Great for xbox lan parties. We connected xbox to an LCD projector and xbox audio to Z-640 speakers, and bingo, we were rocking in surround sound for only 40!