Closeup of a loudspeaker driverCross Section of a Dynamic Cone Loudspeaker.Wall-mounted loudspeakerBass reflex enclosure

Discover great deals on the many top brand items available only on eBay!

Speakers

A loudspeaker, or simply speaker, is an electromechanical transducer which converts an electrical signal into sound. more...

HomeHome
Accessories & CablesAccessories & Cables
AmplifiersAmplifiers
CD Players & RecordersCD Players & Recorders
Cassette DecksCassette Decks
CrossoversCrossovers
DVD Players & Recorders DVD Players & Recorders
Digital Music...Digital Music...
Digital Video Recorders, PVRDigital Video Recorders, PVR
EqualizersEqualizers
Headphones, HeadsetsHeadphones, Headsets
Home Audio MiscHome Audio Misc
Home Theater ProjectorsHome Theater Projectors
Home Theater in a Box Home Theater in a Box
KaraokeKaraoke
MiniDisc PlayersMiniDisc Players
OtherOther
PreamplifiersPreamplifiers
ProcessorsProcessors
RadiosRadios
ReceiversReceivers
Remote ControlsRemote Controls
Satellite Radio Satellite Radio
Satellite, Cable TVSatellite, Cable TV
Shelf, Compact SystemsShelf, Compact Systems
Speakers & SubwoofersSpeakers & Subwoofers
Televisions TVTelevisions TV
Tuners, AM/FMTuners, AM/FM
TurntablesTurntables
VCRsVCRs
Vintage ElectronicsVintage Electronics
8-Track Players8-Track Players
Amplifiers, Tube AmpsAmplifiers, Tube Amps
Books, Manuals, MagazinesBooks, Manuals, Magazines
CapacitorsCapacitors
Cassette DecksCassette Decks
Drivers & HornsDrivers & Horns
Other VintageOther Vintage
Preamplifiers, Tube PreampsPreamplifiers, Tube Preamps
RadiosRadios
ReceiversReceivers
Reel-to-Reel Tape RecordersReel-to-Reel Tape Recorders
SpeakersSpeakers
TelephonesTelephones
TelevisionsTelevisions
TransformersTransformers
TubesTubes
Tuners, Tube TunersTuners, Tube Tuners
TurntablesTurntables
Wholesale LotsWholesale Lots

The term loudspeaker is used to refer to both the device itself, and a complete system consisting of one or more loudspeaker drivers (as the individual units are often called) in an enclosure. The loudspeaker is the most variable element in an audio system, and is responsible for marked audible differences between systems.

History

Nikola Tesla is believed to have put electrically charged carbon dust in a cup-shaped device to create the first telephone loudspeaker. However, the first documented device that might fit this description was created in 1881.

Alexander Bell patented the first loudspeaker as part of his telephone in 1876. This was soon followed by an improved version from Ernst Siemens in Germany and England (1878). The modern design of moving-coil loudspeaker was established by Oliver Lodge in England (1898).

The moving coil principle was patented in 1924 by two Americans, Chester W. Rice and Edward W. Kellogg. There is some controversy in that an application was made earlier by the Briton Paul Voigt but not granted until later. Voigt produced the first effective full range unit in 1928, and he also developed what may have been the first system designed for the home, although using electromagnets rather than permanent magnets.

These first loudspeakers used electromagnets because large, powerful permanent magnets were not freely available at reasonable cost. The coil of the electromagnet is called a field coil and is energized by direct current through a second pair of terminals. This winding usually served a dual role, acting also as a choke coil filtering the power supply of the amplifier which the loudspeaker was connected to.

The quality of loudspeaker systems until the 1950s was, to modern ears, very poor. Developments in cabinet technology (e.g. acoustic suspension) and changes in materials used in the actual loudspeaker, led to audible improvements. For Example, Paper cones (or doped paper cones, where the paper is treated with a substance to improve its performance) are still in use today, and can provide good performance. Polypropylene and aluminium are also used as diaphragm materials. Additional improvements to loudspeaker technology occurred in the 1970s, with the introduction of higher temperature adhesives, improved permanent magnet materials, and improved thermal management.

Dynamic loudspeakers

The traditional design is a semi-rigid paper fiber cone and a coil of fine wire (usually copper), called the voice coil attached to the apex of the cone. A "gap" is a small circular hole, slot or groove which allows the voice coil and cone to mave back and forth. The coil is oriented coaxially inside the gap made with a permanent magnet. The gap is also where the magnetic field is concentrated. One magnetic pole is outside the coil, whilst the other is inside the voice coil. In addition to the magnet, voice coil, and cone, dynamic speakers usually also include a suspension system to provide lateral stability and make the speaker components return to a neutral point after moving. A typical suspension system includes the 'spider', which is at the apex of the cone, often of 'concertina' form; and the 'surround', which is at the base of the cone. The parts are held together by a chassis or basket.

Read more at Wikipedia.org


[List your site here Free!]

New listing
		One Pair Jvc Victor Zero 4 Dome Midrange Speakers Hsa0709-01Bcs with CrossoversNew listing One Pair Jvc Victor Zero 4 Dome Midrange Speakers Hsa0709-01Bcs with Crossovers $50.00 New listing
		Ess Speaker Logos/Badges Sound as clear as light Air Motion Transformer Amt-1eNew listing Ess Speaker Logos/Badges Sound as clear as light Air Motion Transformer Amt-1e $29.99
New listing
		Pair of Vintage The Fisher Xp-9B 4-way Loudspeakers Speaker System, Xp9New listing Pair of Vintage The Fisher Xp-9B 4-way Loudspeakers Speaker System, Xp9 $199.99 New listing
		pair 10" 25cm Fullrange Speaker Round AlNiCo Magnet L4055Pbko 7Ohm, 6VaNew listing pair 10" 25cm Fullrange Speaker Round AlNiCo Magnet L4055Pbko 7Ohm, 6Va $99.00
New listing
		Pair of Realistic 8" Speakers / Woofers - 2035 - 7 Ohm - CsNew listing Pair of Realistic 8" Speakers / Woofers - 2035 - 7 Ohm - Cs $59.95 New listing
		2 Vintage Utah 12" WoofersNew listing 2 Vintage Utah 12" Woofers $39.99
New listing
		12" University Model 6201 Speaker 25 Watts 8-16 ohms 104360D15New listing 12" University Model 6201 Speaker 25 Watts 8-16 ohms 104360D15 $10.00 New listing
		altec lansing 288 vintage speaker with 8 cell hornNew listing altec lansing 288 vintage speaker with 8 cell horn $1,000.00
New listing
		McIntosh Scr2 Speaker Control Relay for C28 C30 C32 C33 C34 PreampsNew listing McIntosh Scr2 Speaker Control Relay for C28 C30 C32 C33 C34 Preamps $100.00 New listing
		Pair Of Vintage Acoustic Research Ar-2ax Speakers - As-IsNew listing Pair Of Vintage Acoustic Research Ar-2ax Speakers - As-Is $250.00
New listing
		Jbl 10" Speaker / Woofer - 410G-1 / 70443-01 - 8 Ohm - CsNew listing Jbl 10" Speaker / Woofer - 410G-1 / 70443-01 - 8 Ohm - Cs $49.95 New listing
		Single Tangent Rs6 speakers crossover and badgeNew listing Single Tangent Rs6 speakers crossover and badge $19.57
New listing
		Vintage Western Electric Altec ks-14704 receiver Horn driver speakerNew listing Vintage Western Electric Altec ks-14704 receiver Horn driver speaker $549.99 New listing
		Vintage 12" Jensen P12Q SpeakerNew listing Vintage 12" Jensen P12Q Speaker $100.00
New listing
		Advent The Loudspeaker Fried Egg Tweeter - vintage, workingNew listing Advent The Loudspeaker Fried Egg Tweeter - vintage, working $24.50 New listing
		Yamaha ns-10m Pro cabinetsNew listing Yamaha ns-10m Pro cabinets $70.00
New listing
		Vintage 12" Jensen C12r Ribbed Cone Tube Amp Speaker 16 Ohm Sounds fantastic!New listing Vintage 12" Jensen C12r Ribbed Cone Tube Amp Speaker 16 Ohm Sounds fantastic! $60.00 New listing
		Klipsch Heresy I H-Bb SpeakerNew listing Klipsch Heresy I H-Bb Speaker $389.00
New listing
		Vintage Bose 501 Series Iv Direct Reflecting Speakers 8 Ohms Working Nice 1984New listing Vintage Bose 501 Series Iv Direct Reflecting Speakers 8 Ohms Working Nice 1984 $424.99 New listing
		Infinity Rs2000 Crossover - PairNew listing Infinity Rs2000 Crossover - Pair $12.00
New listing
		The Advent Loudspeaker grill (pair) - vintage, original, good conditionNew listing The Advent Loudspeaker grill (pair) - vintage, original, good condition $19.50 New listing
		2 Vintage Wharfdale Glendale 3Xp 5 Inch Midrange SpeakersNew listing 2 Vintage Wharfdale Glendale 3Xp 5 Inch Midrange Speakers $54.79
New listing
		Celestion Speakers Impact 35 Floor Standing (2 speakers)New listing Celestion Speakers Impact 35 Floor Standing (2 speakers) $299.00 New listing
		Vintage Jensen C12r Tube Amp / Guitar Amp 16 ohm Speaker - Sounds Fantastic!New listing Vintage Jensen C12r Tube Amp / Guitar Amp 16 ohm Speaker - Sounds Fantastic! $60.00
New listing
		Mirage Speaker Tweeters 5Dr 51442 1 Inch Soft Dome 4 OhmsNew listing Mirage Speaker Tweeters 5Dr 51442 1 Inch Soft Dome 4 Ohms $39.13 New listing
		Vintage Pair of Wharfedale Pink Tweeters from W60E Speakers /tweetersNew listing Vintage Pair of Wharfedale Pink Tweeters from W60E Speakers /tweeters $24.00
New listing
		Pair of Infinity 8" Speakers / Woofers - S-80877 - 8 Ohm - CslNew listing Pair of Infinity 8" Speakers / Woofers - S-80877 - 8 Ohm - Csl $89.95 New listing
		Pair of Philips El7024/01 (9710/01) 8,5 inch - 21,5 cm Fullrange Alnico speakersNew listing Pair of Philips El7024/01 (9710/01) 8,5 inch - 21,5 cm Fullrange Alnico speakers $349.00
New listing
		1 pr. Vintage Bsr Ss-2 Bookshelf Speakers Real walnut wood 2 way Great sound VgcNew listing 1 pr. Vintage Bsr Ss-2 Bookshelf Speakers Real walnut wood 2 way Great sound Vgc $29.95 New listing
		Infinity Studio Monitor 120 Work greatNew listing Infinity Studio Monitor 120 Work great $60.00
New listing
		2 Vintage Alnico Magnet 12 Inch Speakers 1950'S Era Radio Speakers CanadaNew listing 2 Vintage Alnico Magnet 12 Inch Speakers 1950'S Era Radio Speakers Canada $46.96 New listing
		Tesla Art 481 Horn Tweeters for Klangfilm ProjectNew listing Tesla Art 481 Horn Tweeters for Klangfilm Project $100.00
New listing
		2 Vintage Jensen / Rsc 12 Inch Alnico Speakers 1950'S EraNew listing 2 Vintage Jensen / Rsc 12 Inch Alnico Speakers 1950'S Era $156.55 New listing
		Fostex 6 1/2" Speaker Nos Nib Docs !New listing Fostex 6 1/2" Speaker Nos Nib Docs ! $69.97
New listing
		Vintage Hafler Model 200 Bookshelf Speakers Sequentially Numbered Factory BoxNew listing Vintage Hafler Model 200 Bookshelf Speakers Sequentially Numbered Factory Box $219.99 00006000 New listing
		Victrola taking machine Rca grammaphon 4' hornNew listing Victrola taking machine Rca grammaphon 4' horn $850.00
New listing
		Vintage 2-Way Beige Speaker Selector Switch Box (Made in Japan)New listing Vintage 2-Way Beige Speaker Selector Switch Box (Made in Japan) $12.00 New listing
		Ultra Rare Pioneer Dss-9 Parts - Pair of Original Speaker Tuning Pot KnobsNew listing Ultra Rare Pioneer Dss-9 Parts - Pair of Original Speaker Tuning Pot Knobs $9.99
New listing
		15" Speaker Cetec Gauss B358 Double Spider Design Bass /P.A. Speaker Pmr Re-FabNew listing 15" Speaker Cetec Gauss B358 Double Spider Design Bass /P.A. Speaker Pmr Re-Fab $99.99 New listing
		10 Inch Jensen / Rsc Alnico Magnet Speakers 8 Ohms Made In CanadaNew listing 10 Inch Jensen / Rsc Alnico Magnet Speakers 8 Ohms Made In Canada $39.13
New listing
		Pair of Jbl 8" Speakers / Woofers - 8 Ohm - CslNew listing Pair of Jbl 8" Speakers / Woofers - 8 Ohm - Csl $89.95 New listing
		Pair of vintage Advent Loudspeaker woofer with 12" masonite frame - need re-foamNew listing Pair of vintage Advent Loudspeaker woofer with 12" masonite frame - need re-foam $40.00
New listing
		Vintage Rca 257S1 Pm Oval Car Speaker 5x7" - 3.2 Ohms - 274134 - Rl-109-1 - NewNew listing Vintage Rca 257S1 Pm Oval Car Speaker 5x7" - 3.2 Ohms - 274134 - Rl-109-1 - New $49.95 New listing
		Cerwin Vega D-9 speaker parts lotNew listing Cerwin Vega D-9 speaker parts lot $0.99
New listing
		Vintage Pair Bsr Dr-1550R Loud SpeakersNew listing Vintage Pair Bsr Dr-1550R Loud Speakers $249.99 New listing
		16/2 Awg 250 Feet In Wall Speaker Wire Cl2 Rated Ul Listed CertifiedNew listing 16/2 Awg 250 Feet In Wall Speaker Wire Cl2 Rated Ul Listed Certified $24.99
New listing
		Vintage Dynaco A-50 SpeakersNew listing Vintage Dynaco A-50 Speakers $225.00 New listing
		Nos Vintage Ar Acoustic Research Bookshelf Speakers Ps215 Pair in BoxNew listing Nos Vintage Ar Acoustic Research Bookshelf Speakers Ps215 Pair in Box $45.00
New listing
		Vintage Altec 416A 15" Speaker - 16 Ohm - #2 - CslNew listing Vintage Altec 416A 15" Speaker - 16 Ohm - #2 - Csl $179.95
Click to see more Speakers items at www.ebay.com
Prices current as of last update, 11/16/17 10:49am.

Home Contact Resources Exchange Links ebay