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Item#: N82E16836121104

Logitech Z-640 71.2 watts 5.1 Speaker System

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  • 35Hz - 20,000Hz
  • 71.2 watts

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Take your audio experience to the edge with the Z-640 5.1 speaker system... featuring a powerful subwoofer, wall-mountable satellite speakers, finger-tip controls and Dolby Digital sound. Total power output: 70 watts (RMS).

Take your PC, Mac or game console to the next level with the home-theater sound of the Z-640. The most powerful 5.1 system under $100 redefines your favorite music, movies or games into a true audio experience.

  • 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

  • Learn more about the Logitech Z-640




    Total Power
    71.2 watts
    Satellite RMS Power /ea
    45.5 Watts RMS (2 x 7.3w Front; 2 x 7.3w Rear; 16.3w Center)
    Subwoofer RMS Power
    25.7 watts
    Frequency Response
    35Hz - 20,000Hz
    Signal to Noise Ratio(SNR)


    Experience Dolby Digital sound for music, movies and games, Innovative, dual-chamber subwoofer delivers twice the bass energy of similar subwoofers, Magnetic shielding in speakers protects your equipment
    Warranty, Returns, And Additional Information
    • Warranty
    • Limited Warranty period (parts): 2 years
    • Limited Warranty period (labor): 2 years
    • Read full details

    Customer Reviews of the Logitech Z-640

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    • Seth M.
    • 2/8/2016 2:52:19 PM

    5 out of 5 eggsStill kickin'

    Pros: I bought these before I went to college. It's been 12 years. Enough said.

    Cons: None.

    Did you find this review helpful? Yes No

    4 out of 5 eggsAwesome speakers

    Pros: cheap and good. Nice punchy bass, good mid bass, great highs.

    Cons: lacks mid range, can be slightly adjusted with EQ and more volume.

    Other Thoughts: I've owned these speakers since 2004. They just broke the other day. I can't believe it's been 11 years, through countless LAN parties, moves, apartments, and general use. I will miss these. We've been through a lot.

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    • Curtis N.
    • 8/4/2011 12:17:23 AM
    • Ownership: more than 1 year

    5 out of 5 eggsNice speakers

    Pros: So good for what they are. Incredible sound.

    Cons: I killed them on accident.

    Other Thoughts: It's been a few years. Late one night I had just moved into my new place and couldn't sleep, so decided to set up my PC.

    I either plugged my vga monitor into the subwoofer port (the port was the same size as the VGA) or plugged something coming from the sub into my VGA port on my video card. Can't remember which, but it blew the sub or the center speaker controls. Man these were awesome while they worked. No other parts were damaged in this late night stupidity session.

    0 out of 1 people found this review helpful. Did you? Yes No

    • Jason N.
    • 4/6/2007 12:56:16 PM
    • Ownership: more than 1 year
    • Verified Owner

    5 out of 5 eggsBack in production?

    Pros: I bought my set over four years ago and they are still my main gaming speakers. I just don't have any legitimate reason to drop extra money on an upgrade. Sure, if you really want THX or digital inputs or insane volume levels then maybe... but you'll be easily spending 5 or 6 times the money. There isn't a better 5.1 system out there if you're on a budget. The sub is surprisingly powerful. With the system placed in the corner of my basement, I can do a pretty respectable job of filling the space with music when throwing a party. Everybody who hears them are amazed that I paid under a single Ben Franklin for them almost five years ago. Sure, nobody is going to mistake these for a premier home theater rig... but they put out great sound quality for the price. If you are looking for an affordable bedroom/office setup, anything more is almost overkill.

    Cons: When pushing the extreme volume limits, the satellites get a little too much of the lower frequencies and distort. Still, at this price point... that is nothing more than a minor nitpick. The rear speaker cables might be a little short depending on room size but it's not terribly hard to rig up extentions.

    Other Thoughts: These are analog only, so they will use three minijacks on your sound card. This means you will loose your rear microphone input when connecting these if your soundcard only has standard "blue green pink" minijacks. If your motherboard and case support a front audio connector, then this shouldn't be a big deal. You can just hook the microphone up there. If not, you will lose your microphone connection altogether. Also, make sure your soundcard supports 5.1 sound.

    Did you find this review helpful? Yes No

    • Chuck M.
    • 10/9/2004 7:48:22 PM

    4 out of 5 eggsLogitech did it again!!

    Comments: These computer speakers are great. they not only work with your computer but also have a adapter that works very well with your gaming consloes to give you a 5.1 gaming setup. Logitech makes very good equipment. If your looking for a great sounding inexpensive 5.1 setup, these are a gaming/music enthusiast's dream.

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    • Anonymous
    • 10/8/2004 1:51:21 AM

    5 out of 5 eggsGreat for the price...

    Comments: These speakers are nothing short of amazing. Great quality for the price, way to go logitech!

    Did you find this review helpful? Yes No

    • Anonymous
    • 10/5/2004 11:50:28 PM

    4 out of 5 eggs

    Comments: boost it out this speakers rocks just a pro with it there is to much bass on the satelites speakers but after that theres nothing worng with it you could even trow a party with it .

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    • Anonymous
    • 10/5/2004 3:58:14 PM

    5 out of 5 eggsaudiophile1

    Comments: great speakers for the price. Hu doesn't understand that speakers have sealed cabinets for sound quality. True, they sound louder in ported enclosures but sound quality decreases dramatically. A ported enclosure with a driver of this size would not make a noticable "loudness" difference anyway. Point is- DON'T HACK YOUR NICE SPEAKERS without researching facts!

    1 out of 1 people found this review helpful. Did you? Yes No

    • Anonymous
    • 10/5/2004 12:59:24 PM

    4 out of 5 eggsnice... but not

    Comments: very good speakers for the price... sound is good. but i blew the sub withing 2 months. i produce music with hard long bass lines and i think it being a closed box for the sub... i blew it. very good for the price tho

    0 out of 1 people found this review helpful. Did you? Yes No

    • Luke H.
    • 10/5/2004 12:39:56 PM

    5 out of 5 eggsFast Shipping, Product

    Comments: After having a car with close to 4,500 watts, i wasn't expecting too much performance from a fifty dollar set of speakers. I was astounded. In a dorm room with lots of other music constantly going around these speakers still sound very good even at near full volume. The sub is very well set up with the system, make sure that you play around with the phase volume before you make any decisions about whether you like it or not, after you wait through 12-24 hours of music, videos, whatever to let everything break in. A kid down the hall has the THX 5.1 that going for two hundred more and though it does sound incredible i would never <font>d</font>rop the extra money. Especially when in college.

    1 out of 1 people found this review helpful. Did you? Yes No

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