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Post subject: What's up with NEO Speakers?
Posted: Sat Aug 03, 2013 5:17 pm
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Here are two paragraphs from Wikipedia on the subject of neodynium

Neodymium is never found in nature as the free element, but rather it occurs in ores such as monazite and bastnäsite that contain small amounts of all the rare earth metals. The main mining areas are in China, the United States, Brazil, India, Sri Lanka, and Australia. The reserves of neodymium are estimated at about eight million tonnes. Although it belongs to the rare earth metals, neodymium is not rare at all. Its abundance in the Earth crust is about 38 mg/kg, which is the second highest among rare-earth elements, following cerium. The world's production of neodymium was about 7,000 tonnes in 2004.[8] The bulk of current production is from China, whose government has recently imposed strategic materials controls on the element, raising some concerns in consuming countries and causing skyrocketing prices of neodymium and other rare-earth metals.[9] As of late 2011, 99 percent pure neodymium was traded in world markets for USD $300 to $350 per kilogram, down from the mid-2011 peak of $500/kg.[10]

Neodymium is typically 10% to 18% of the rare earth content of commercial deposits of the light rare earth element minerals bastnasite and monazite.[citation needed] With neodymium compounds being the most strongly colored for the trivalent lanthanides, that percentage of neodymium can occasionally dominate the coloration of rare earth minerals—when competing chromophores are absent. It usually gives a pink coloration. Outstanding examples of this include monazite crystals from the tin deposits in Llallagua, Bolivia, ancylite from Mont Saint-Hilaire, Quebec, or lanthanite from the Saucon Valley, Pennsylvania. As with neodymium glasses, such minerals change their colors under the differing lighting conditions. The absorption bands of neodymium interact with the visible emission spectrum of mercury vapor, with the unfiltered shortwave UV light causing neodymium-containing minerals to reflect a distinctive green color. This can be observed with monazite-containing sands or bastnasite-containing ore.
Don't blame the speaker manufacturers.


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Post subject: Re: What's up with NEO Speakers?
Posted: Sat Aug 03, 2013 5:49 pm
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I'll stick with alnico, thankyewvurrymuch.

:mrgreen:

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Post subject: Re: What's up with NEO Speakers?
Posted: Sat Aug 03, 2013 6:27 pm
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Good question, thanks for the info DJ. I've only played through neo cabs at guitar center and they sound light in side by side comparisons with reg cabs, IMHO YMMV (to quote my favorite Martian). Hope that helps.

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Post subject: Re: What's up with NEO Speakers?
Posted: Sat Aug 03, 2013 6:56 pm
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DaJeepster wrote:
Don't blame the speaker manufacturers.


I didn't.

But thanks to this post, I won't in future.

I'm glad we had this chat.

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Post subject: Re: What's up with NEO Speakers?
Posted: Sat Aug 03, 2013 7:38 pm
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My Vox AD60VTX has a 12" neodynium speaker. It's supposed to be lighter than typical magnets. My back appreciates that.
As far as sound, I can only say this: Every time I take that amp out to play someone tells me how good it sounds. It's often the sound guy that comments.

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