Main Features Mainstream Beryllium
Mainstream Beryllium
Written by Jeff Fritz   
Friday, 08 January 2010 07:34

Beryllium is, according to many loudspeaker designers, a near-perfect material for tweeter domes. The high stiffness-to-mass ratio and the ability of beryllium to maintain its shape into the very high frequencies is technically beneficial. Whereas many tweeter materials start to "break up" (deform) near the audible limit of human hearing around 20kHz, beryllium is able to play linearly out to 40kHz and above. What this translates to is cleaner treble -- a benefit of a more pistonic tweeter driver.

Beryllium has been used for a number of years now and, as we saw at CES 2010, many of the most ambitious loudspeaker designers in the world are now using beryllium in their tweeters, and that number is likely to continue to grow. Rockport Technologies and Magico -- two of the cutting-edge manufacturers chasing the state of the art -- are prime examples.


Rockport's new $29,500/pair Alya, which we featured as a "ShowStopper!," has a beryllium tweeter, and you can bet that some of the other speakers in the Rockport line will have the same tweeter in the future.


Magico also introduced beryllium into their lineup with the new Q5 loudspeaker, which is also featured as a "ShowStopper!" ($54,000/pair).

While one material in one driver does not a state-of-the-art loudspeaker make, its use by a growing number of the most respected loudspeaker designers in the world indicates more mainstream acceptance of beryllium. While it should be noted that companies as diverse as Focal, Revel, and Paradigm were some of the first to use beryllium, it seems that CES 2010 signals its use on a much wider scale. Maybe CES 2010 will be remembered as the year beryllium went mainstream.

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