Alnico Speaker
Alnico Speaker
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 Vintage Set of 4 Hammond Tube Organ CR20 tone cabinet speakers NR  US $5.00
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 8 Lafayette Utah Speaker ALNICO V 5 Magnet Beautiful Dual Voice Coil US $44.50
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 VINTAGE AMPEX 915 SPEAKERS RARE BEAUTIFUL CTS JBL US $129.99
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 2x TELEFUNKEN 10 AlNiCo FULLRANGE speaker RED NIPPLE 1940s US $710.00
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 Two 12 Hammond Tube Organ CR20 tone cabinet alnico speakers NR US $5.50
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 Vintage Heppner 12 speaker ribbed cone 1960s 16ohm bass organ Leslie guitar amp US $9.99
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 JENSEN PM12B HUGE ALNICO LOUDSPEAKERS PAIR PERFECT TRUE MATCHED CLOSE SERIAL US $275.00
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 SINGLE VINTAGE JENSEN 8 UNAX ALNICO FULL RANGE SPEAKER from ALLIED CABINET US $11.50
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 Vintage Utah WD 66 Speakers 3 Way12 Woofer Mid and Tweet solid steel basket US $11.99
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 Rola 15 inch Speaker US $34.95
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 Vintage 12 inch alnico speaker 4 Ohm US $35.00
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 VINTAGE JBL D 131 ALNICO 12 INCH SPEAKER US $225.00
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 Vintage JENSEN Alnico 5 PM Concert Series 12 Inch SPEAKER Loudspeaker FE12K8W NR US $79.99
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 Vintage Jensen P15 N 1959 Alnico speaker 15 8 ohm P15N smooth bass organ Leslie US $79.00
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 Vintage Jensen P15 N 1959 Alnico speaker 15 bass organ Leslie 8 ohm P15N smooth US $79.00
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 VINTAGE JENSEN ALNICO 5 PM SPEAKER Marked UTONE US $24.99
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 Jensen P10Q Alnico 10 Instrument Speaker 8 Ohms 1957 FENDER AMP US $78.00
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 15 JENSEN Special design woofer Tested working stained USA US $30.00
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 Heppner For Magnavox 5 Inch Speakers 4 Ohm Pair ALNICO 575 537 US $5.00
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 PIONEER SX1000TW WITH CABINET NICE US $150.00
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 Vintage Cleveland 12 speaker Alnico ribbed cone 1960s organ Leslie guitar amp US $12.00
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 Wharfedale Mid Sixties Vintage Alnico 12 Woofers Excellent Condition US $25.99
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 1 MATCHED PAIR OF ROLA 12 SPEAKERS ALNICO RIBBED 285203 8 ohm US $20.50
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 1 MATCHED PAIR OF ROLA 15 SPEAKERS ALNICO 6 ohm US $29.50
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 MATCHED pair VINTAGE JENSEN P12Q Alnico for Guitar Gibson Fender etc US $57.60
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 1 MATCHED QUAD SET OF ROLA 10 SPEAKERS ALNICO all 285408 8ohm NICE CLEA US $13.50
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 2 Jensen P12N Alnico 12 Instrument Speakers 8 Ohms 1961 Fender Amp US $100.00
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 2ea Cletron 12 Alnico speakers 16 ohm Cathedral Series US $49.00
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 65 National Panasonic Ducone full range alnico mags No issues Japan pr US $140.00
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 Pair of SANSUI SP 10 in very good condition US $99.00
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 one SEAS rubber surround from 10 Alnico magnet woofer for Dynaco A25 A35 A50 US $11.95
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 Jensen 24 Speakers ALNICO FRIED EGG Tweeter C9828 E 400 SOUND GREAT NICE US $39.99
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 TRU SONIC 120LX Full Range SP 214 Horn Tweeter in Original Corner Cabinets US $3,650.00
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 Pair 10 Fullrange AlNiCo PM39 Phenolic Spider Speaker US $499.00
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 Fullrange 8 20cm AlNico ALU DEW Speaker Telefunken US $129.00
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 1 ACOUSTIC RESEARCH AR 3a 12 Early Style WOOFER AR3a AR3 a AR 3 a Speaker US $125.00
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 L Cao 65 inch Alnico Fullrange Speaker Matched Pair US $290.00
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 Vintage 60s EV Electro Voice Curved Line Radiator PA Columns US $24.95
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 Vintage Heppner 15 Inch Alnico Speaker Tube Amp 575303 US $19.99
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 Vintage Oaktron V135C3C Alnico Oval Speaker in Original Packaging New Old Stock US $10.00
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 2 1 4” Miniature PM Speaker US $2.95
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 Vintage Rola Alnico Tube Amp Guitar Speaker 12 Inch US $14.99
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 Vintage RCA 6 MI 2935 Speaker Driver Huge Alnico Magnet WWII US Army Navy US $149.95
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 Vintage Rola Alnico Tube Amp Guitar Speaker 12 Inch Ribbed Cone P12 285032 US $14.99
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 Vintage Rola Alnico Tube Amp Guitar Speaker 12 Inch Ribbed Cone P12 285903 US $14.99
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 Pair of Vintage Heppner 12 Alnico Speakers Jensen P12Q rating US $19.99
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 Saba Alnico Greencone Midrange Speakers US $79.82
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 Pair of Vintage 1963 Rola 12 Alnico Speakers 16 ohms Jensen P12Q rating US $19.99
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 Saba Alnico Blackcone Midrange Speakers US $60.00
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 2 1 2” Miniature PM Speaker 8 Ohms 30 Watts US $3.79
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 3” Miniature PM Speaker 8 Ohms 30 Watts US $3.99
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 VINTAGE WHARFEDALE 10 SPEAKERS ENGLAND LARGE ALNICO MAGNETS 15 OHMS CAST BASKET US $2.25
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 1965 Pair Wharfedale 10 ALNICO Wide Range Mids England Cast Square Magnet US $157.00
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 JBL 044 Tweeters US $99.99
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 Rare Coral 8 Co axial w Alnico magnets Peak branded for Australian market US $225.00
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 GREAT 1930 Tube Electronics book Western Electric RCA Horn Speakers HUGE Book US $65.00
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 2 vintage DEW 4 Tweeters ALNICO big magnet speaker US $59.00
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 2 Vintage Cleveland 12 Speakers 8 ohm ALNICO Matching Codes 3 pair avail US $34.99
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 JBL LANSING 12 ENERGIZER TRANSDUCER VINTAGE SPEAKER US $1,276.16
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 L Cao 8 inch Alnico Fullrange Speaker Matched Pair US $349.00
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 2” Miniature PM Speaker US $2.49
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 RARE ELECTRO VOICE 30W 30 BASS ALNICO WOOFER EV PATRICIAN 800 700 FINEST ONE US $1,800.00
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 VINTAGE OPERADIO NAVY SHIP SPEAKER US $350.00
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 Peerless G 50 MRC Midrange Speakers Bang Olufsen US $34.95
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 2 Klangfilm VAC speakers 8 Alnico lsp22a tube amp H US $109.00
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 AR 2a speaker 10 inches WOOFER DRIVER PAIR cloth surround 8 Ohms Alnico US $125.00
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 AR 2a speaker HIGH FREQUENCY TWEETER DRIVER PAIR 4 OHMS ALNICO US $100.00
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 Vintage High power 8 ohm 15 Alnico speaker RUGGID CONE US $110.00
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 Altec 416 8Z 8 Omh 15 Woofer with New Cone Sounds Great US $175.00
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 Vintage speaker jbl le15a fresh recone 15 alnico woofer looks and sounds great US $399.00
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The Various Forms of Disc Magnets and Their Applications
Disc magnets, put simply, are an incredibly strong magnet produced through a process involving making alloys from natural elements. Usually, the elements used are rare earth metals (or 'rare earth elements'), in most cases, neodymium. Rare earth metals are termed as such because they are components of a class of the periodic table of the elements classified as 'rare'. However, these 'rare' earth metals are actually quite easy to come across, as they are considered to be a byproduct of mining for minerals. Other types of disc magnets include ceramic magnets, made by creating a mix of iron, ceramic and alnico (a combination of nickel, cobalt, copper, aluminium, iron and occasionally titanium). However, as ceramic magnets are weaker in terms of magnetism than rare earth magnets, ceramic magnets are not used as frequently by manufacturers commercially.
The most powerful disc magnet is, by far, the neodymium magnet. Although the neodymium magnet is just one millimeter in diameter, this type of magnet contains enough force such that it can erase an entire hard disk drive. However, neodymium magnets are rather brittle - should two neodymium magnets clash together, they will shatter, sending out shards with enough force to cause injury. In addition, neodymium magnets can break a finger should a person holding two magnets lose their grip on one of them. Neodymium magnets, which were first manufactured by well-known corporation General Motors, are created by combining neodymium with iron and boron. Another type of disc magnet, known as the 'SmCo' magnet, is made by combining samarium and cobalt, although this is much more expensive than typical neodymium magnets.
In recent years, the use of disc magnets in the commercial world has increased. Neodymium disc-shaped magnets have been phased in to replace magnet types such as alnico and ferrite magnets, as neodymium magnets are small yet very powerful. For example, the growing trend for manufacturers to make much more powerful computer speakers and hard drives has led to the increased uptake of neodymium magnets, as the manufacturers require very small magnets to fit inside small electronic parts. For example, in many hard drives, the thin plate opposite the read-write disks contains a small neodymium magnet. In addition, another neodymium disc magnet lies below the plate inside an actuator. Although the majority of the newer hard drives on the market contain two magnets, a minority contain just one, rendering them less powerful than their dual-magnet counterparts. The power of neodymium magnets when compared with alnico magnets may be demonstrated in this context - an Alnico Magnet ten times the equivalent size of a neodymium magnet must be used to achieve the same force inside the hard drive. This goes to show that neodymium magnets are much stronger than their alnico equivalents!
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