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
		Vintage Golden Voice 6" 16 ohm speaker is used but looks and sounds GreatNew listing Vintage Golden Voice 6" 16 ohm speaker is used but looks and sounds Great $15.99 New listing
		Pioneer Cs-53 Speakers (2) Vintage 1970's 40 Watts GwcNew listing Pioneer Cs-53 Speakers (2) Vintage 1970's 40 Watts Gwc $209.99
New listing
		Bose 901 SpeakersNew listing Bose 901 Speakers $400.00 New listing
		
				Vintage Pioneer Cs-99A Speakers 15" 5 Way Fully Functional Great Sound/ConditionNew listing Vintage Pioneer Cs-99A Speakers 15" 5 Way Fully Functional Great Sound/Condition $0.99
New listing
		Pair Of Cerwin Vega V-15F Speakers Floor-Standing 15" 3-way 400 watts+ Receiver!New listing Pair Of Cerwin Vega V-15F Speakers Floor-Standing 15" 3-way 400 watts+ Receiver! $250.00 New listing
		Pair Of Wooden Vintage Home Made Stereo Audio Speakers Very Old & AuthenticNew listing Pair Of Wooden Vintage Home Made Stereo Audio Speakers Very Old & Authentic $9.99
New listing
		Audiophile Infinity Composition Prelude P-Fr Speakers And Center ChannelNew listing Audiophile Infinity Composition Prelude P-Fr Speakers And Center Channel $350.00 New listing
		Vintage Field Coil Full Range Speaker 21cm. diameterNew listing Vintage Field Coil Full Range Speaker 21cm. diameter $49.00
New listing
		Vintage 12" Speaker / House SpeakerNew listing Vintage 12" Speaker / House Speaker $41.97 Was: Previous Price $59.95 New listing
		Acoustic Research Powered Partner Ar 570 Speakers Lot of 25 Parts + Screws Lqqk!New listing Acoustic Research Powered Partner Ar 570 Speakers Lot of 25 Parts + Screws Lqqk! $16.95
New listing
		Unique Watterson Floor Speakers-Vgc-5 Drivers-Made In Texas By Jw Davis & CoNew listing Unique Watterson Floor Speakers-Vgc-5 Drivers-Made In Texas By Jw Davis & Co $119.00 New listing
		Vintage Janszen 11" Woofer Pair From Electrostatic SpeakersNew listing Vintage Janszen 11" Woofer Pair From Electrostatic Speakers $30.00
New listing
		Pioneer Ja-R104 Rack Mount Ears For Spec System Sr 303 Rg 2 Rg 3 Txd 1000New listing Pioneer Ja-R104 Rack Mount Ears For Spec System Sr 303 Rg 2 Rg 3 Txd 1000 $75.00 New listing
		Vintage Pioneer Cs-99A Speakers - Fully Tested - Sound Great - Scratches & StainNew listing Vintage Pioneer Cs-99A Speakers - Fully Tested - Sound Great - Scratches & Stain $750.00
New listing
		Majestic G-3 Super Dynamic SpeakerNew listing Majestic G-3 Super Dynamic Speaker $100.00 New listing
		Rare Pioneer Fb Cs-R500 Tweeter Perfect Working Pt-80-2 Very NiceNew listing Rare Pioneer Fb Cs-R500 Tweeter Perfect Working Pt-80-2 Very Nice $21.97
New listing
		Pair Philips Ad 12100 Hp8 12" Vintage Full Range speakers Great SoundNew listing Pair Philips Ad 12100 Hp8 12" Vintage Full Range speakers Great Sound $150.00 New listing
		Grey Consol Speaker: Single/monoNew listing Grey Consol Speaker: Single/mono $22.65
New listing
		Vintage Radio Shack Realistic Minimus 77 Stereo Speakers 8 Ohms/55W TestedNew listing Vintage Radio Shack Realistic Minimus 77 Stereo Speakers 8 Ohms/55W Tested $59.99 New listing
		Jbl 2212 From Jbl 4310 Woofer Alnico (piar) WorkNew listing Jbl 2212 From Jbl 4310 Woofer Alnico (piar) Work $329.99
New listing
		Saba 20cm Fullrange & Tweeter Blue Greencone Large AlNiCo Speaker Set 1672Cu40New listing Saba 20cm Fullrange & Tweeter Blue Greencone Large AlNiCo Speaker Set 1672Cu40 $219.00 New listing
		The " Smaller Advents" Rare Vintage Audiophile Bookshelf/Floor Standing SpeakersNew listing The " Smaller Advents" Rare Vintage Audiophile Bookshelf/Floor Standing Speakers $76.47 Was: Previous Price $89.97
New listing
		Magnavox 12" Pedestal Speaker for the E.H. Scott Allwave 23 RadioNew listing Magnavox 12" Pedestal Speaker for the E.H. Scott Allwave 23 Radio $399.99 New listing
		Lot Of 2 ~ Jbl 2206H 12" Low Frequency Speaker Woofer Lf Drivers ~ 8 OhmNew listing Lot Of 2 ~ Jbl 2206H 12" Low Frequency Speaker Woofer Lf Drivers ~ 8 Ohm $299.00
New listing
		Vintage 15" Realistic Alnico Speaker 8 Ohms /Guitar or Hi-FiNew listing Vintage 15" Realistic Alnico Speaker 8 Ohms /Guitar or Hi-Fi $30.00 New listing
		Yamaha ns-10m Pro cabinetsNew listing Yamaha ns-10m Pro cabinets $100.00
New listing
		Technics Sb-Cr33 2 Way Speaker Replacement Woofer With Silver Plastic RimNew listing Technics Sb-Cr33 2 Way Speaker Replacement Woofer With Silver Plastic Rim $20.00 New listing
		Bell Sound 3 " Tweeters #33A13 433934 from 1959 Thompson Ramo Wooldridge SetNew listing Bell Sound 3 " Tweeters #33A13 433934 from 1959 Thompson Ramo Wooldridge Set $9.95
New listing
		1958 Jensen P12Ql 8ohm Excellent Condition Vintage SpeakerNew listing 1958 Jensen P12Ql 8ohm Excellent Condition Vintage Speaker $225.00 New listing
		Vintage Motorola Speakers Electronics Police AudioNew listing Vintage Motorola Speakers Electronics Police Audio $9.99
New listing
		Infinity Rs2000 Grilles - PairNew listing Infinity Rs2000 Grilles - Pair $7.99 New listing
		Pair Of Infinity Reference E-L Speaker CrossoversNew listing Pair Of Infinity Reference E-L Speaker Crossovers $6.99
New listing
		Pioneer Hpm-40 Speakers Very loudNew listing Pioneer Hpm-40 Speakers Very loud $60.00 New listing
		Vtg Pair Pioneer Cs-B9000 Floor Speakers 150W Max - Usa Japan - TestedNew listing Vtg Pair Pioneer Cs-B9000 Floor Speakers 150W Max - Usa Japan - Tested $130.00
New listing
		Pristine Pair Armaco Sc-8 8 po Coaxial Alnico Fullrange Speakers Tube AmplifierNew listing Pristine Pair Armaco Sc-8 8 po Coaxial Alnico Fullrange Speakers Tube Amplifier $125.00 New listing
		Vintage Technics Bookshelf SpeakersNew listing Vintage Technics Bookshelf Speakers $29.99
New listing
		Calrad 5" Pm Paper Cone Speakers. Matched Pair, 8 ohm, 10,000 gauss, Nos NibNew listing Calrad 5" Pm Paper Cone Speakers. Matched Pair, 8 ohm, 10,000 gauss, Nos Nib $9.99 New listing
		Technics Sb-A32 3-Way Tower Vintage Floor Speaker 8Ω 260 WattsNew listing Technics Sb-A32 3-Way Tower Vintage Floor Speaker 8Ω 260 Watts $260.00
New listing
		Pioneer Cs-G104 Speakers Vintage (Pair)New listing Pioneer Cs-G104 Speakers Vintage (Pair) $99.99 New listing
		Peter Snell Acoustics Type C/VNew listing Peter Snell Acoustics Type C/V $900.00
New listing
		Altec Lansing 755C Vintage SpeakerNew listing Altec Lansing 755C Vintage Speaker $450.00 New listing
		Quam 5" 450 ohm Vintage Paper Cone Speakers. Nos Nib Matched PairNew listing Quam 5" 450 ohm Vintage Paper Cone Speakers. Nos Nib Matched Pair $9.99
New listing
		Altec 3154 (2) 15" WooferNew listing Altec 3154 (2) 15" Woofer $199.99 New listing
		pair Grundig 17cm Fullrange Speaker Dew AlNiCo Magnet Typ 3DNew listing pair Grundig 17cm Fullrange Speaker Dew AlNiCo Magnet Typ 3D $39.99
New listing
		Rare Jbl Crossovers Dividing Network Frequency Perfect Working 3120A Very NiceNew listing Rare Jbl Crossovers Dividing Network Frequency Perfect Working 3120A Very Nice $8.14 New listing
		Vintage Zenith Allegro 300 Speakers and Hardware Recovered From Damaged CabinetsNew listing Vintage Zenith Allegro 300 Speakers and Hardware Recovered From Damaged Cabinets $34.95
New listing
		jbl 125a #2New listing jbl 125a #2 $125.00 New listing
		Advent SpeakersNew listing Advent Speakers $58.00
Click to see more Speakers items at www.ebay.com
Prices current as of last update, 09/20/17 7:09am.

Home Contact Resources Exchange Links ebay