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Logitech Z-4 2.1 Speaker System with Subwoofer ( 970175-0403 ) Enjoy the elegant styling and premium sound of Logitech s Z-4 speaker system, featuring a modern, home-audio inspired design and advanced driver technology. Pressure-driver subwoofer technology delivers unparalleled distortion-free bass. Sleek satellites include durable cast-metal stands and feature one active and two pressure drivers, producing the high-quality sound. The convenient wired remote control includes a headphone jack, auxiliary input, volume, subwoofer, and power controls. Setup is easy with color-coded audio cables. Satellites - 17 watts RMS (8.5W x 2) Subwoofer - 23 watts RMS Total RMS power - 40 watts RMS Total peak power - 80 watts Frequency response - 35Hz - 20kHz Satellites - 2 inch dome & pressure driver Subwoofer - 8 inch pressure driver Signal-to-noise ratio - less than 92 db Satellites Dimensions - Height 9 x Width 3 x Depth 3.75 Subwoofer Dimensions - Height 9 x Width 9 x Depth 9.37
Customer Review: Ok sound, but it looks great
These speakers look good, but the sound suffers from the small satellites which lack in mids and highs (almost as bad as the stock speakers that come with new computers) also the sub is only a 4″ with an 8″ passive radiator (no bass port). This all comes together to create a sort of muffled sound with weaker bass. I only paid $35 total with delivery for a brand new set and I fell that these speakers should not cost a penny more for their quality (mainly for style and decoration, not sound). A much better alternative to these speakers, which I also own are the Cyber Acoustics CA-3892. they have a much cleaner sound and much stronger bass.

Logitech X-540 5.1 Speaker System The X-540 speakers use FDD2 (Frequency Directed Dual Driver) technology to produce a uniform soundfield anywhere in the room. Immerse yourself in the game using the selectable matrix mode, which automatically creates 5.1 surround sound from common 2-channel stereo sources. The compact satellites are wall-mountable, and a special clip lets you place the center channel speaker on top of most flat-panel monitors to reduce desktop clutter. Use the wired control center to control volume and bass levels or connect headphones to enjoy your games and music privately.
Customer Review: Great Speakers
Great speakers for the price. the only downside is the rear speaker cables are a bit short.

Logitech G51 5.1 Surround Sound Speakers The Logitech 980-000100 G51 5.1-Channel Surround Sound Speaker System brings your games to life with 360-degree surround sound. Your games are meant to be experienced in surround sound. Now hear your enemies sneaking up behind you, and listen for action in every direction. Music Matrix mode delivers a natural audio profile, while Gaming Matrix mode boosts the subwoofer and rear satellites for a more intense gaming experience. Enjoy quick and convenient access to your audio controls Mount your satellite speakers on the wall Secure the center-channel speaker to the top of your LCD monitor Personalize your speakers with custom speaker skins and a patent-pending mod system Satellites - 20 watts RMS x 4 (into 8 ohms, at 1 kHz, at 10% THD) Center channel - 19 watts RMS (into 8 ohms, at 1 KHz, at 10% THD) Subwoofer - 56 watts RMS (into 2 ohms, at 100 Hz, at 10% THD) Total peak power - 310-Watts Frequency response - 36 Hz-20 KHz Subwoofer crossover frequency - 150 Hz Drivers - Satellites 2x 2 laser-tuned drivers and Subwoofer Down-firing 5.25 high-excursion driver Enclosure - Bass reflex enclosure with tuned port Inputs - 6-channel direct, stereo RCA Precision control pod - Non-skid silicone feet Signal-to-noise ratio - More than 94 dB, A-weighted System Requirements - PC or Mac with at least 6-channel sound capability for discrete surround sound Satellites Dimensions - Height 4.2 x Width 5.6 x Depth 8.5 Center Channel Dimensions - 8.0 x 3.9 x 5.6 Subwoofer Dimensions - 7.7 x 10.4 x 13.1
Customer Review: Great Speaker System
Logitech has allways delivered top products and never fail.

Logitech Pure-Fi Anywhere Compact Speakers for iPod (White) Enjoy clear sound and maximum bass with iPod speakers that go where you go - around the house or on the road. The Pure-Fi Anywhere speaker system uses a unique combination of speaker drivers to deliver clear sound with maximum bass and minimal distortion. Its compact size and long battery life make it the ideal companion to your iPod.
Customer Review: Great Speakers
These speakers have great sound and great quality. Sometimes if the volume is up too high, there is some slight distortion, but if I have them turned up that high, they blast me out of my whole house anyhow! The sound carries unbelievably and can easily be heard throughout a 1500 sq. foot house when not even on the highest volume.

Logitech mm50 Portable Speaker System for iPod (White) The Logitech mm50 Portable Speakers for iPod uses 3″ pressure drivers to maximize bass and minimize distortion. The rechargeable Li-ion batteries last up to 10 hours, and you can charge both the speaker system and iPod batterysimultaneously. Using 3-D sound processing that “widens” the stereo effect, this system’s sound seems to come from an area about two feet wider than the speaker itself. And with a custom travel case, you can take the big sound from this small package anywhere. Support for all iPods with dock connector (including iPod photo and iPod mini); Auxiliary input for iPods without dock connector. Logitech 2-Year Limited Warranty Wireless Remote included Operates with AC adapter (included) or rechargeable Li-ion batteries. AC adapter charges speaker and (docked) iPod batteries simultaneously AC adapter is international voltage capable but comes with a USA plug
Customer Review: Great Sound
I am happy with the selection. I brought these for my cubicle at work. The sound is great in this environment. At times my co-workers ask me to pump up the volume and I still get quality sound. However, don’t expect to use these for a party.