Logitech Speaker System Z906

USD 399.99
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Surround Sound Speakers Z906

Hear every detail, all around you—this THX-Certified system delivers theater-quality surround sound for your movies, games and music.

Lots of watts

Lots of watts

You get big, bold sound and details galore from these 500-watt, THX®-Certified speakers with 5.1 digital decoding.

Plug it in

Plug it in

No need to plug and unplug your components—you can connect up to six at once for easy access to all your audio.

You run the show

You run the show

You’ve got total control over your audio experience with an easy-to-read-and-stack digital control console and a wireless remote.

Surround Sound Speakers Z906

This THX-Certified 5.1 system delivers 500 watts (RMS) of theater-quality sound. Digital and analog inputs, an easy-to-read-and-stack control console and a wireless remote let you take charge of your entertainment.

500-watts (RMS) of power

Make any night opening night. You get thunderous audio that can shake your house—and your whole neighborhood.

Watt? Learn more about audio terminology and what it means for you. Learn more.

THX certified

THX® Certified

You’ve got quality you can count on—these speakers have met strict performance standards to achieve THX certification.

Digital Decoding

Digital decoding

Hear every detail all around you—from the roar of the crowd to the footsteps right behind you—in your Dolby digital or DTS encoded soundtracks.

Digital and analog inputs

Digital and analog inputs

You’ve got the flexibility to set up your system the way you want to. Connect up to six audio sources, including your TV, Blu-ray™/DVD player, DVR, Xbox 360®, PLAYSTATION®3, Wii®, iPod®, PC and more.

Easy to read control console

Easy-to-read control console

The stackable, easy-to-read design fits in with your home-entertainment system and gives you control of your audio—change the volume on all your speakers, turn the power on or off, set inputs and more.

Wireless remote

Wireless remote

You can control your listening experience without ever getting off the couch.

Down firing subwoofer

Ported, side-firing subwoofer

165 watts of deep bass brings your music, movies and games to life.

Wall mountable saltellites

Wall-mountable satellites

Let you transform any room into a home theater.

Surround sound with 3D Stereo

Surround sound with 3D Stereo

Your speakers convert two-channel stereo into an immersive surround sound experience.

Audio Glossary

2.0 speaker system

Your basic setup—two speakers, or satellites, that give you stereo sound with limited bass. These easy-to-install systems don’t include a subwoofer and are compatible with most standard PC soundcards.

2.1 speaker system

A sound system that shakes some life into your audio. It has two satellites, like a 2.0 system—but adds a subwoofer to give you a more robust sound with deeper bass. It’s just as easy to set up as a 2.0 system, but the subwoofer takes up additional space.

5.1 speaker system

A surround sound system with speakers in front of and behind you to immerse you in your entertainment. It includes left and right front speakers, left and right rear speakers, a front center speaker, and a subwoofer. If you’re into movies or gaming, this is the perfect choice for you.

360-degree sound

Balanced sound no matter where you are in the room. This is created by using both forward- and backward-firing drivers that project sound evenly in all directions. Also known as omnidirectional acoustics.

Learn more about 360-degree sound.

6-channel direct

An input with three separate stereo mini-plug jacks (1/8 inch) that connects to PC sound cards, or can be used as three separate stereo inputs for use with headphones, iPods, or other devices with an 1/8-inch jack or plug.

96/24 decoding

An enhanced, higher-resolution, studio-quality format available on many DVD video and DVD audio discs. Refers to 24-bit, 96 kHz audio.


AAC (Advanced Audio Coding)

A successor to MP3. It’s an audio codec or device that decodes or encodes digital data. It offers higher sound quality at lower bit rates than MP3. It’s also known as MPEG-4 AAC.

Active driver

The main driver, or electromagnetic component, of a speaker. This is what makes the sound. See driver.

Amplifier (Amp)

A device that increases signal level. They typically increase voltage, current, or both.

Analog signal

A continuous electrical signal that’s commonly represented as an oscillating wave. It can take any value in a range and changes smoothly between values, as opposed to digital signals, which are characterized by discrete bits of information in numerical steps.

Apple Lossless

An audio codec, or device that decodes or encodes digital data, developed by Apple Inc. This is a lossless method of data compression for digital music. See lossless.



The low end of the sound spectrum that goes from 20 Hz to 200 Hz. It puts the boom, shake, and rumble into your entertainment. This is the range for explosions, tubas, cellos, bass, drums, and more. Also known as low range.


Center channel

The center speaker in a surround sound system. It goes below or on top of your monitor or TV and produces the dialog and vocals—making them seem like they’re coming right out the screen.


A severe form of distortion that occurs when you overload an amplifier. It makes the sound hard and edgy.


DAC (Digital to audio converter)

A device that converts a digital bit stream to an analog signal so your speakers can turn it into sound.

dBs (Decibels)

A unit of measure of the relative loudness of sound. The threshold of hearing is 0 dB. A whisper is 15-25 db. A normal speaking voice is 65-70 dB. Live rock music is 120 dB and up. And a jet aircraft is about 140-180 dB. Anything over 140 dB hurts to listen to and can damage your hearing.

Dead zone

An area of the room with quieter sound from your speakers due to sound waves cancelling each other out.

Digital signal

An audio signal that is usually represented by ones and zeros. A digital signal has to be converted to an analog signal before it can be turned into sound.

Digital rights management (DRM)

A technology that allows content owners to determine and control how you can enjoy content. That can include how many copies you can make of a song or what types of devices you can transfer it to.


Anything that alters the musical signal from its original quality.

Dolby® digital

A five-channel audio format consisting of left, center, and right front channels, left and right rear channels, and one channel for the subwoofer. It’s one of several systems used for surround sound. All processing is done in digitally for your listening pleasure.

Down-firing subwoofer

A subwoofer that has its cone facing down—directing bass throughout the room.


This is where the magic happens. It’s an electromagnetic device that turns electrical signals into sound waves in the air by moving a thin layer of fabric or paper. It’s usually made up of a magnet and voice coil.


DTS decoders are in virtually every major brand of 5.1-channel surround processor.


Equalization (EQ)

The purposeful changing of the frequency response of a circuit to change the sound. You might do this to boost the bass for gaming or movies. Or to create a more balanced sound for your music.


FLAC (Free Lossless Audio Codec)

A type of lossless audio compression. It doesn’t remove any information from the audio stream like lossy codecs such as MP3 and AAC. That makes it a good choice for archiving audio collections as well as everyday playback. See Lossless, Lossy.


One measure of a sound wave. Unless you’re superhuman, the range for hearing is about 20-20,000 Hz (20 Hz-20 kHz). Lower numbers represent lower frequencies

Frequency Directed Dual Drivers

A Logitech® technology that uses two identical full-range drivers in each satellite. A special filter that detects specific frequencies is applied to one of the drivers—gradually muting specific frequencies in that driver as needed to prevent hot spots or dead zones in the soundfield. The result is better sound quality throughout the entire frequency range of the speaker.

Frequency response

The range of frequencies an audio device can reproduce.

  • Low frequencies (bass) range         20 Hz to 200 Hz
  • Midrange (voice) range                      200 Hz to 4,000 Hz
  • High frequencies (treble) range       4,000 Hz to 20,000 Hz

  • Full-range drivers

    A driver designed to reproduce most of the sound spectrum.


    Hertz (Hz)

    The standard unit of frequency, equal to 1 cycle per second. One hertz (Hz) represents one cycle per second, 20Hz represents 20 cycles per second, and so on.

    High range (highs)

    The high end of the sound spectrum, also known as treble. The high range goes from 4,000 Hz to 20,000 Hz. It covers stuff like bells, cymbals, and the highest notes on a piano.

    Hot spots

    An area of the room where there volume gets too loud because the sound waves are amplified.



    A measure of electrical resistance specified in ohms.



    A tendency toward poor signal synchronization caused by electrical changes. It can cause doubling up or skipping of portions of audio.


    Long-throw subwoofer

    A subwoofer that gives you higher sound levels at greater distances.


    A class of data compression that allows the exact original data to be reconstructed from the compressed data.


    A class of data compression that doesn’t allow the exact original data to be reconstructed from the compressed data.

    Low range (lows)

    See bass


    Matched quad micro-drivers

    A set of four identical micro-drivers, offering powerful sound in a compact design.

    Max-X™ drivers

    High-excursion drivers that allow for greater dynamic range, improved bass, and lower distortion.

    Midrange (mids)

    The middle frequencies of sound from 200 Hz to 4,000 Hz. This is the range of sound our ears are most sensitive to and includes most vocals (not the glass-breaking kind) and instruments.


    A driver that produces mid and some low frequencies.


    A popular digital audio encoding and lossy compression format. It greatly reduces the amount of data (10:1 compression) needed to represent audio. See Lossy.


    Sound that is poorly defined, sloppy, or vague.


    Network music player

    A device that wirelessly streams the digital music stored on your computer, Internet radio broadcasts, and tracks from online music services to any room of your home. You can choose a player that connects to your stereo or powered speakers, or an all-in-one solution that has its own speakers.

    Neodymium micro-drivers

    Small drivers made from a rare earth metal that is the strongest permanent magnet on earth.


    Unwanted sound or distortion.

    Noise isolation

    Preventing outside sounds from entering the ear when you’re listening to music with earphones. It lets you hear your music and not the chatty person behind you.



    A type of file format.


    A unit of electrical resistance or impedance presented by the speakers and recognized by the amplifier. See Impedance.

    Omnidirectional acoustics

    See 360-degree sound.


    Passive crossover

    A filter that splits the audio signal into separate bandwidths so each segment can go to the correct type of driver. It keeps the lows from mingling with the highs in your tweeter, for example. This type of filter is made of passive components.

    Peak power

    The maximum wattage an amplifier can deliver as a brief burst during a musical peak. This is not an accurate measure of power. RMS power, which is standardized, should be used when you compare speakers instead.


    An opening in a speaker cabinet that increases the bass response of the speaker.

    Ported enclosure or ported subwoofer

    A type of speaker enclosure that uses a port to improve efficiency at low frequencies.

    Pressure drivers

    A driver that creates pressure inside a speaker cabinet that is sealed and airtight to move the passive radiator, increasing sound levels. This is an efficient way to create tighter, lower bass.


    RMS (root mean square)

    A standard amplifier measurement. It’s a conventional way to measure the effective average value of an audio signal or other power (AC) voltage.

    RMS power

    The amount of continuous power, measured in watts, that an amplifier can produce. The higher the RMS figure, the louder and cleaner music sounds. This measurement is far more accurate than peak power.



    A small speaker with limited bass response.


    A design that prevents the magnet from causing interference with other electronics.

    Signal-to-noise ratio (SNR)

    A specification that describes how much noise an audio component has compared to the music signal.

    Sound pressure level (SPL)

    A measure of the loudness of a sound, relative to the threshold of hearing, measured in dB (decibels). It generally goes from 0 to 140 dB. 140 dB is considered painful and can damage your ears.


    The perception of where the different instruments and vocals are located on an imaginary stage.


    The illusion of a continuous soundfield spread around the listener by two or more related audio signals. It’s often used to indicate that there are two channels.

    Stereo XL

    A Logitech® technology that widens the soundstage beyond the physical boundaries of the speakers, creating an immersive audio experience.


    A speaker designed to reproduce very low frequencies (20-200 Hz).

    Surround sound

    Multi-channel audio playback that creates a three-dimensional sound that immerses you in your entertainment. It’s typically used for movies and gaming and makes you feel like you’re part of the action.



    A series of specifications for surround sound systems. They’re designed to ensure that the sound of movies is as close as possible to what the filmmakers intended.

    Top-fire armature

    A custom in-ear speaker design—featured in the Ultimate Ears® SuperFi 5 and 5vi earphones—that uses a compact wideband driver to create a high-performance sound.


    See high range.


    A design in which each driver (woofer, midrange, and tweeter) has their own amplifier. This generally results in a better sound because the signals can be tailored for the driver more accurately before they get to the amplifier.


    A small, lightweight driver for reproducing the highest musical frequencies such as violins and cymbals, and typically everything above 2,000 Hz.

    Two-way speaker

    A speaker with two different drivers that are dedicated to different frequency ranges.


    Virtual surround sound

    Technology that provides a rich surround sound experience with just two speakers by down-mixing Dolby Digital 5.1 channel and Dolby Surround (Pro Logic) to 2-channel audio.


    WAV (or WAVE)

    A Microsoft and IBM audio file format standard for storing audio on PCs.


    A power measurement derived by multiplying current by voltage. It’s used to quantify an amplifier’s power output.

    WMA (Windows Media Audio)

    A proprietary compressed audio file format developed by Microsoft.

    WMA Lossless

    A lossless compressed audio file format developed by Microsoft. See lossless.


    A driver that reproduces bass frequencies. It can be used in a subwoofer or a two-way or three-way speaker.


    System Requirements

    • Works with:
      • Computers, music players, TVs, Blu-ray™ and DVD players, game consoles and other audio sources with digital optical, digital coaxial, RCA audio or 3.5 mm out
      • Nintendo Wii™ using the AV cable that comes with your console

    Warranty Information

    • 2-year limited hardware warranty

    Package Contents

    • Speakers
    • Speaker connection wire
    • 6-foot (1.82-m) six-channel direct cable
    • Stackable control console
    • Wireless remote
    • 3 AAA batteries
    • User documentation

    Part Number

    • PN 980-000467

    Technical Specifications

    Total watts (RMS)




    500 W

    165 W

    5 x 67 W

    THX® Certified



    Dolby Digital 5.1 decoding


    DTS decoding


    3D Stereo

    (Surround sound from 2-channel sources)


    Digital optical inputs


    Digital coaxial input


    Six-channel direct input


    RCA input


    3.5 mm input


    Control console



    4, wall mountable

    Center channel speaker

    1, wall mountable


    Ported, side-firing



    Audio Support

    Looking for information about a Logitech speaker dock, Squeezebox or other audio product? Our online resources can help you with tips, troubleshooting, replacement parts and more.

    Learn more

    THX® Certified surround sound speakers.

    Make any night opening night.

    Find out how.

    Bluetooth Audio Adapter

    Wireless technology for your speakers

    Learn More