Types of Coils?

[Puppet Master 10+ year member]

I was just wondering the difference between copper and aluminum voice coils. I was going to order an AQHdc318 and in the order area i seen the aluminum coils were more expensive.

Thanks for any input.//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

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[hoxie08 5,000+ posts]

different metals

 

[profundus-sanus 10+ year member]

aluminum transfers heat better(better power handling)

the copper is supposed to make the woofer sound better...

 

[Korn4Life 5,000+ posts]

U would think with copper prices they would be more expensive..

 

[Puppet Master 10+ year member]

Yes i see that. But do they do anything different.

 

[Puppet Master 10+ year member]

So aluminum is for more power handling

 

[Korn4Life 5,000+ posts]

Besides the price is there a reason they dont use silver for a coil. It is way better for heat transfer then aluminum

 

[Puppet Master 10+ year member]

so does aluminum make the sub better for spl

 

[icpurplepplalot 5,000+ posts]

so does aluminum make the sub better for spl

yes

 

[Gilliz 10+ year member]

Besides the price is there a reason they dont use silver for a coil. It is way better for heat transfer then aluminum

Copper is the most electrically conductive of all metals. Silver has higher resistivity.

 

[groundpound4200 5,000+ posts]

yes

X2!!

 

[bonesninja 5,000+ posts]

Copper is the most electrically conductive of all metals. Silver has higher resistivity.

no its not...silver is. Its also the most thermaly conductive metal as well

 

[bonesninja 5,000+ posts]

A Group 11 element is one in the series of elements in group 11 (IUPAC style) in the periodic table, consisting of transition metals which are the traditional coinage metals of copper (Cu), silver (Ag), and gold (Au). They are also known as the "noble metals." The name "coinage metals" is not recognized by the International Union of Pure and Applied Chemistry (IUPAC), and can be somewhat misleading as further elements are added to the table. In addition, various nations have used probably dozens of metals (including stainless steel, lead, and zinc) in coins. The short-lived transactinide roentgenium (Rg) (which, with a half-life of 3.6 seconds, is hardly good material for making coins) is also a member of Group 11.

Explanation of right side periodic table slice: Transition metals atomic numbers in black are solids solid borders are older than the Earth (Primordial elements) dashed borders have no isotopes older than the earth

They are all relatively inert, corrosion-resistant metals which have been used for minting coins, hence their name. Many metals form colored compounds, such as iron pyrite, and many metals have a colored sheen, but apart from caesium, which also has 1 6s-electron, similar to gold, only gold and copper are colored.

These metals, especially silver, have unusual properties that make them essential for industrial applications outside of their monetary or decorative value. They are all excellent conductors of electricity. The most conductive of all metals are silver, copper and gold in that order. Silver is also the most thermally conductive element, and the most light reflecting element. Silver also has the unusual property that the tarnish that forms on silver is still highly electrically conductive.

Copper is used extensively in electrical wiring and circuitry. Gold contacts are sometimes found in precision equipment for their ability to remain corrosion-free. Silver is used widely in mission-critical applications as electrical contacts, and is also used in photography (because silver nitrate reverts to metal on exposure to light), agriculture, medicine, audiophile and scientific applications.

Gold, silver, and copper are quite soft metals and so are easily damaged in daily use as coins. Precious metal may also be easily abraded and worn away through use. In their numismatic functions these metals must be alloyed with other metals to afford coins greater durability. The alloying with other metals makes the resulting coins harder, less likely to become deformed and more resistant to wear.

 

[groundpound4200 5,000+ posts]

I thought gold did....//content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif I need to go back to Chemistry class

 

[Korn4Life 5,000+ posts]

I think gold is pretty good to from what i remember. But ya i remember my electrical teacher telling up that silver is the best but of course cost way to much.. I think if a company would do a silver coil it would be DD. They like to do weird stuff like that