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Speakers & Subwoofers

Speakers & Subwoofers Article

A loudspeaker, speaker, or speaker system is an electromechanical transducer that converts an electrical signal into sound. The term loudspeaker can refer to individual devices (or drivers), and complete systems consisting of an enclosure incorporating one or more drivers and additional electronics. Loudspeakers are the most variable elements in any audio system, and are responsible for marked audible differences between otherwise identical sound systems. Loudspeaker performance (i.e., their accuracy in reproducing a signal without adding distortion) is significantly poorer than that of other audio equipment. For example, harmonic distortion in a typical loudspeaker can be 100 to 1000 times greater than that of amplifiers. The frequency response of a loudspeaker is often referenced as being within 3 dB of perfect linearity (though many speaker designs fall far outside this range), whereas an amplifier may vary less than 0.1 dB.

To reproduce a wide range of frequencies, most loudspeaker systems require more than one driver, particularly for high sound pressure level or high fidelity applications. Individual drivers are used to cover different frequency ranges. The drivers are named subwoofers, for very low frequencies; woofers, for low frequencies; midranges, for middle frequencies; tweeters, for high frequencies; and supertweeters, for very high frequencies. An electronic filter called a crossover separates the incoming signal into different frequency bands appropriate for each driver. A loudspeaker system with 'N' separate frequency bands is described as an "N-way speakers": 2 way system will have woofer and tweeter sections; a 3-way system a combination of woofer, tweeter, and mid-range speakers, and so on.


Speakers & Subwoofers Items

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BOSE 151 Indoor/Outdoor SPEAKER fit patio garden pool

$52.99
ATLAS SOUNDOLIER THP-3W IN WALL SUBWOOFER 50W N.I.B.

$49.99
KEF Model 11 FiveTwo Series Speakers in Gloss Black, Pa

$1249.99
New Logitech X-540 5.1 CH Surround Speakers System NIB

$54.95
POLK AUDIO TC60i In Ceiling / Wall Speakers TC 60 PAIR

$295.00
Stunning AER Pisces MkIII - Next Generation!

$289.95
Bose Model 32 Flush Mount Speaker (pair)

$49.95
JBL Creature 2 II Speakers and Sub-Woofer - White

$46.00
SPECO TECH 5.25" IN-CEILING SPEAKERS PAIR

$8.51
Home Theater Surround Sound Speaker Stands pair of 2

$20.50
YAMAHA NS-AP6500F BOOKSHELF SPEAKER

$9.99
Vintage personalized speaker in original box

$9.99
PMPO 600W Mulitimedia Speakers Subwoofer System

$10.00
1 New Home Theater Surround Sound 5 Speakers System NR

$124.99
Definitive Technology 7006 Bipolar Tower Transformer

$5.50
KEF iQ9 3-Way 6.5" Tower Speaker in Walnut, pair ~SALE~

$849.99
New Logitech X-540 5.1 CH Surround Speakers System NIB

$54.95
2 White Bose Double Cube Acoustimass Lifestyle Speakers

$122.50
KEF iQ9 3-Way 6.5" Tower Speaker BLACK Pair

$899.99
Pioneer PDP-S40U Audio Speaker System

$19.00
KEF iQ7 3-Way 6.5" Tower Speaker DARK APPLE, Pair

$649.99
Logitech Z-2300 2.1 Speakers

$73.00
PSB Alpha B1 Bookshelf Speakers (1pr) {NEW} {Black}

$209.00
Usher Audio S-520 Speakers

$242.50
SONY 3 PC SPEAKER SET! 1 LONG 2 SMALLER ONES! ALL WIRES

$19.99
BANG OLUFSEN Beolab 1 speakers lowest price like new

$4200.00
INNAX * 2.1 Wooden Game PC Speakers w/ Sub woofer Black

$0.99
6.5" INDOOR OUTDOOR WATERPROOF SPEAKERS BOAT MARINE

$63.33
POLK AUDIO LC265i Center In Wall Speaker LC 265 InWall

$315.00
M & K SPEAKER CABINET Black-17" X 4.5"

$0.99
HomeTech HTM2 Outdoor Speakers II (Pair) - White

$3.58
Computer/ Gaming speakers/Miidiland FP21K Flat Panel /

$9.95
KEF iQ9 3-Way 6.5" Tower Speaker BLACK Pair

$899.99
Lot of (11) - 8" Bogen Ceiling Speakers

$52.08
NEW SONY SS-WS71 DAV-HDZ235 PASSIVE SUBWOOFER SUB BLCK

$16.99
ACOUSTIC RESEARCH AR 8 IN. WOOFER SURROUND KIT

$19.50
KLH Audio 3.5" Tweeters 3 1/2" Speakers 8 Ohm New

$10.49
KEF Model 11 FiveTwo Series Speakers in Gloss Black, Pa

$1249.99
Pioneer Speaker Bar

$0.99
2 PYLE OUTDOOR WATERPROOF 800w SPRING-LOADED SPEAKERS

$48.90
Pair New Outdoor Speakers White All Weather 300 Watt NR

$20.50
4 Pair 8in Ceiling Speakers, 4 Controls, Speaker Switch

$302.71
BOSE 201 SERIES IV DIRECT REFLECTING SPEAKERS EXCELLENT

$75.00
Panasonic SH-FX80 Second Room Wireless Speaker Kit

$27.98
SPEAKERCRAFT AIM 8 five IN-CEILING SPEAKERS

$799.99
3000 W HOME THEATER SYSTEM W/USB FLASH DRIVE,4 AUX-LINE

$69.95
2 PYLE 8" 800 WATT BASS HOME MINI-SPEAKER SYSTEM SET 08

$109.95
Definitive Technology ProSub 600 Subwoofer Mainboard  

$11.85
Bose Model 32 Flush Mount Speaker (pair)

$49.95
SPEAKERCRAFT OE8 THREE WEATHER PROOF OUTDOOR SPEAKERS

$409.00
Two BOSE 301 Series II Tweeters w/Brackets + Crossover

$8.95
SHARP SUBWOOFER SYSTEM XL-ES5/XL-ES50

$10.99
Monitor Audio Bronze Series: BFX Surround Speakers

$249.00
NEW CERWIN VEGA 5.25" DUAL CENTER HOME THEATER SPEAKER

$79.00
GALE GS 401 (Ultra RARE) Restored

$400.00
Lot of 2 - CSI/ SPECO SP-6ECS 6 1/2" In-Ceiling Speaker

$39.99
KEF iQ9 3-Way 6.5" Tower Speaker in Walnut, pair ~SALE~

$849.99
INNAX* 4.1 Computer PC Audio Speakers W/Subwoofer New*

$9.99
Jamo SUB550 550 Watt 10" Subwoofer in Black NEW!!!!

$295.00
Genesis Media Labs G-506 G506 Home Theater

$99.00
AS-IS Klipsch ProMedia 2.1 Powered Subwoofer

$0.99
Panasonic Plasma TV Speakers Model TY-SP42P5W-M

$75.00
Apple Computer Speakers

$5.00
NEW HARMAN KARDON SUB WOOFER SPEAKERS

$4.95
DIVINCI-608 Home Theatre Surround Sound System/Speakers

$174.99
Indoor Outdoor Speaker Pair 400 Watt New Landscape NIB

$16.16
AS-IS Rocketfish RF-3800 2.1 Powered Audio System

$0.99
Wharfedale Diamond 9.1 Bookshelf Speakers Black (Pair)

$250.00
HomeTech HT603R 6-1/2 Inch 2-Way In-Ceiling Speaker

$0.99
3000 WATT LCD PLASMA TV COAXIAL OPTICAL AUX 5.1 SPEAKER

$99.95
KEF iQ7 3-Way 6.5" Tower Speaker DARK APPLE, Pair

$649.99
POLK AUDIO TC265i Center In Wall Speaker TC 265 InWall

$225.00
KEF XQ30 Slimline Floorstanding 3-way Speakers in Mahog

$1899.99
NEW Creative TravelSound 250 Portable Speakers (White)

$12.24
INNAX * 2.1 Wooden Powerful Game Subwoofer w/ Speakers

$7.99
Monitor Audio Bronze Series: B2 Bookshelf Speaker.

$279.00
P&J SURROUND SOUND 5 PIECE SPEAKER SET+1 JAMO SUBWOOFER

$19.99
NHT THREE C Center Channel Speaker Brand New Each.

$435.00
Boston Acoustics Bravo II Speaker - New Bravo 2 White

$44.99
1 BOSE JEWEL DOUBLE CUBE SPEAKER NEW BLACK

$99.99
Speakercraft Aim8 Three Aim 8 - In-Ceiling Speaker

$189.00
Logitech Z-5500 505-Watt 5.1 Surround Sound Speakers

$184.50
MTX Home Theater Subwoofer 12"

$50.00
NHT IC2 INCEILING SPEAKER PAIR NEW IN BOX

$149.00
AUDIOSOURCE CUSTOM HOME THEATER SYSTEM AS-GRP6

$49.99
RCA Surround Sound Stereo 5 Speaker System Home Theater

$19.97
2 MCS MODULAR COMPONENT SYSTEM 3 WAY BASS SPEAKERS

$24.95
1 Pair Choice Select Premier 8in 90W Ceiling Speakers

$56.95
Klipsch Synergy III 6-1/2in 2-Way Floorstanding Speaker

$92.01
NHT iC1 iC-1 In Ceiling Speakers Pair NEW

$108.00
PAIR WHITE BOSE 102 SURFACE MOUNT SPEAKERS

$49.99
Polk Audio RC60i In Wall Speaker

$31.00
New Infinity Speaker Covers round 7 inch Set two lot

$0.99
NEW Aluratek AIRMM01F Internet Radio Alarm Clock wit...

$147.99
NEW SONY DAV-HDZ235 6 PIECE SURROUND SOUND SPEAKERS 5.1

$38.99
AUDIOSOURCE 6.5" IN-CEILING WHITE HOME STEREO SPEAKER

$32.95
Pair Sony SS-4221 Tower Speakers 200 W 34x13x8" Working

$59.99
KEF XQ30 Slimline Floorstanding 3-way Speakers in Mahog

$1899.99
JBL SP6C-II 2-Way In-Ceiling 80 watt Speaker (Single)

$0.99