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MP3 Accessories

Speakers

Speakers Article

Digital speakers are an impractical but venerable technology, having been the subject of experiments by Bell Labs as far back as the 1920s. The design is simple; each bit drives an independent speaker driver. Increasingly significant bits drive speakers of twice the area of the previous (often in a ring around the previous driver). A value of "1" causes that driver to be driven to full amplitude; a value of "0" causes it to be completely shut off.

There are two problems with this design which has led to it being abandoned as impractical for the present. For a reasonable number of bits (required for adequate sound reproduction quality), the size of the system becomes very large. Secondly, due to analog digital conversion, the effect of aliasing is unavoidable, so that the audio output is "reflected" at equal amplitude in the frequency domain, on the other side of the sampling frequency, causing an unacceptably high level of ultrasonics to accompany the desired output.

The term "digital" or "digital-ready" is often used for marketing purposes on speakers or headphones, but these systems are not digital in the sense described above. Rather, this is a somewhat deceptive marketing tactic, in which the manufacturer is trying to capitalize on the popularity of digital sound recordings and equipment.

Speakers Items

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ILIVE IT188B 2.1 CH BAR SPEAKER WITH IPOD DOCK

$44.99
APPLE SPEAKER FOR IPOD NANO VIDEO Touch iPhone Classic

$6.99
KLIPSCH IGROOVE SXT IPOD MP3 SPEAKER SYSTEM + REMOTE

$43.00
BLUE Phillips IPOD Speaker Dock and speaker!

$24.99
BRAND NEW TRI-MINI PORTABLE SPEAKER FOR IPOD Shuffle

$1.00
Logitech AudioStation Express Speaker System for iPod

$33.95
PORTABLE STEREO SPEAKER for IPOD NANO 1ST GENERATION 1G

$7.95
Pocket Size Frog Speaker Sound Box for iPod MP3 MP4

$9.00
JBL, ALTEC LANSING, KLIPSCH IPOD DOCKS

$0.99
Portable mini NEW Stereo Speaker system for iPod/cd/MP3

$7.94
NEW JBL On Tour Portable Speaker System iPod MP3 PSP

$36.00
JBL Spyro 3-piece Powered Satellite Speakers & Sub iPod

$35.01
Logitech mm50 Portable Speakers for Apple iPod White

$42.95
SONIC IMPECT FUSION 5085 SOURR0UND SYSTEM FOR IPOD

$78.89
**ihome 2go Pink Portable Speaker w/case for ipod/mp3**

$8.99
NEW Sonic Impact iP23 Speakers for iPod i-P23 MP3 Surf

$49.99
New iPod Nano Portable Docking Station Speakers mp3!

$5.95
NEW American Idol IPOD Speaker

$3.00
AS-IS Logitech AudioStation iPod Speaker System

$0.99
ALTEC LANSING M602 BLK IPOD SPEAKER SYSTEM

$19.99
DISNEY MAX JAM STAND FOR MIX MAX AND MIX STICK SPEAKER

$20.00
iHome Docking Dual Alarm Clock Radio IH8 For Apple iPod

$10.75
Tripod Speaker Stand for iPod Nano Video Shuffle Mp3/4

$9.99
MICRO MINI SPEAKERS

$0.99
Klipsch iGroove SXT - iPod/MP3 Sound Dock Speaker

$75.00
iK 500 Kicker i pod dock Digital StereoSystem

$199.00
Portable Tripod Speakers for All iPod nano Shuffle Mini

$7.99
Portable mini NEW Stereo Speaker system for iPod/cd/MP3

$7.56
NEW PORTABLE DOCK SPEAKER FOR APPLE IPOD MINI NANO MP3

$7.58
Athena iVoice iPod Dock Speaker System

$6.97
PORTABLE DOCK SPEAKER FOR APPLE IPOD NANO MINI MP3 NEW

$7.69
New BLACK Stereo Speaker Dock For Apple iPhone iPod MP3

$6.88
BLACK Stereo Speaker Dock For Apple iPod Nano 3rd Gen

$7.56
Xtrememac Ipod Nano Speaker System NEW IN BOX Mp3

$4.00
iPod Nano Speaker Docking Systems Totally Portable NEW

$4.99
JBL On Stage Micro iPod Speaker Remote Carry Case MP3

$12.49
JBL On Stage Micro Portable Loud Speaker for iPod Black

$22.49
FUNK IT Scratchin DJ Animated iPod Dock Speaker System

$29.99
JBL On Stage Micro iPod Speaker Remote Carry Case MP3

$10.50
PORTABLE DOCK SPEAKER FOR APPLE IPOD NANO MINI MP3 NEW

$7.69
ALTEC LANSING SPEAKER SANDISK SANSA MP3 IPOD IM413 NR

$26.00
Acoustic Research AW822 900Mhz Outdoor Wireless Speaker

$1.25
NEW PORTABLE DOCK SPEAKER FOR APPLE IPOD MINI NANO MP3

$7.77
ICY I-CY PENGUIN IPOD MP3 SPEAKER DANCER NEW IN BOX !!!

$4.99
FOLDABLE MINI USB SPEAKER FOR IPOD VIDEO IPHONE TOUCH

$6.29
Griffin TuneCenter Home Media Center for iPod

$24.99
Home Outdoor USB PC Music Audio Speakers System White

$9.50
Klipsch I-Pod system I Groove SXT

$80.00
New JVC Portable Speakers for Apple iPod, Nano, etc

$9.99
MiJam Flower MP3 Ornament Accessory

$29.99
Duo-i AM/FM Stereo Radio with iPod Dock

$7.01
ALTEC LANSING PORTABLE SPEAKERS IPOD ZUNE MP3 IM414 NR

$26.25
* iSymphony Portable Mini Speakers for

$4.99
ELEMENT EIPS100 HIFI SPEAKER FOR IPOD

$4.99
ALTEC LANSING SPEAKER SANDISK SANSA MP3 IPOD IM413 NR

$12.75
Digital Telescopic Speaker for MP3 MP4 Player Blk

$12.50
Easter Egg Tumbler Speaker for ipod MP3 MP4 PC DVD VCD

$8.99
Logitech Pure-Fi Anywhere White Speakers for iPod NIB!

$60.01
PORTABLE DOCKING SPEAKER FOR iPOD MINI/NANO/VIDEO/MP3

$7.56
Logitech AudioStation Express Speaker System for iPod

$36.95
*** IPOD NANO iHome IHM1 Speakers / Case IHM1B NEW ***

$9.99
Apple iPod Hi-Fi High Fidelity Speakers Stereo Hi Fi NR

$10.50
MINT Altec Lansing IM510 Dockng Speaker Base for Sansa

$49.99
iHome Bookshelf System for iPods with AM/FM Radio-NEW

$139.99
JBL On Stage Micro Portable Loud Speaker for iPod Black

$40.00
Logitech Pure-Fi Anywhere Portable Speaker for Ipod

$33.00
NEW BLACK DESKTOP DOCKING SPEAKER for SANDISK SANSA Mp3

$7.56
ipod speaker

$10.00
Tumbler Stero Speaker System for iPod MP3 MP4 Mobile PC

$0.99
iHOME2GO iH19p PINK iPOD SPEAKER CASE SYSTEM iH19 dock

$24.99
ALTEC LANSING INMOTION SPEAKERS IPOD MP3 NANO IM600 NR

$40.00
Klipsch iGroove SXT Ipod sound system

$99.99
Klipsch iGroove SXT Speaker System Apple iPod MP3 NR

$36.00
BLACK Stereo Speaker Dock For Apple iPod Touch iTouch

$7.56
NEW PORTABLE DOCKING SPEAKER FOR iPhone 3G 2ND 8GB 16GB

$7.56
SONIC IMPECT I-PAX SPEAKERS AND STORAGE IPOD SHUFFLE

$53.89
ALTEC LANSING INMOTION SPEAKERS IPOD MP3 NANO IM600 NR

$41.00
Logitech mm50 Portable iPod & MP3 Player Speaker Black

$49.95
Docking Station Speaker for iPOD MINI VIDEO NANO -WHITE

$6.97
Sonic Impact- 55 Ipod Video Player

$10.50
New BLACK Stereo Speaker Dock For Apple iPhone iPod MP3

$6.88
ALTEC LANSING PORTABLE SPEAKERS IPOD ZUNE MP3 IM414 NR

$26.75
IM-600 - iPod Sound Dock - * Brand New *

$75.00
LOGITECH PURE-FI ANYWHERE COMPACT SPEAKER IPOD WHITE

$64.99
Klipsch iGroove SXT Speaker System Apple iPod MP3 NR

$51.00
PORTABLE STEREO for iPod NANO 1GB 2GB 4GB & 8GB ~ Loud

$3.88
PORTABLE DOCKING SPEAKER FOR iPOD MINI/NANO/VIDEO/MP3

$7.56
WHITE FOLDABLE SPEAKER DOCK FOR CREATIVE ZEN VISION M

$6.99
NEW PINK DOCKING SPEAKER for iPhone 3G 2ND 8GB 16GB

$6.99
Silver Easter Egg Tumbler Speaker Mp3/4 PC CD VCD iPod

$0.01
Logitech mm50 Portable Speakers iPod/MP3+Remote+Case

$49.99
New Black Stereo Speaker Dock For Creative Zen Vision M

$7.56
PORTABLE DOCKING SPEAKER FOR iPOD MINI/NANO/VIDEO/MP3

$6.99
XEOS Micro Speakers for IPod or MP3 player Great Deal!!

$1.99
HORIZONTAL SPEAKER FOR US iPHONE iPOD NANO/VIDEO/TOUCH

$24.99
IHOME IH27 PORTABLE ALARM CLOCK SPEAKER SYSTEM FOR IPOD

$11.00
Pocket Size Frog Speaker Sound Box for iPod MP3 MP4

$9.00
iBlaster Cube Sound System-iPod/Mp3/CD & PC Players NEW

$5.88