Beryllium drivers on the cheap??

[NV&H]

Check the link out below. Sonance is using Beryllium tweeters AND woofers in their top range!! Not sure if the price is each or per. Smokin deal if it's for the pair. Perhaps there are no enclosures, but being DIYers, we'd prefer to cannibalize and use them how we'd like anyway.

http://www.hifioverstock.biz/product...products_id=51

Anyone know anything about these Sonance drivers?

[sreten]

Hi,

They are priced per pair and are in wall speakers, they will have
a rear likely moulded cabinet. the crossover should be optimised
for in wall use and as such will not suit normal freespace use.

/sreten.

[NV&H]

Per pair is a nice price even if you pull out the drivers and toss the rest.

Is there a cheaper way to obtain raw Beryllium diaphragm drivers?

[Robh3606]

I don't know. They don't look like beryllium more like aluminum. That's awfully cheap to be using beryllium. I would be careful.

Rob

[tade]

I bet that it's an alloy with beryllium in it if they are being at all honest. Beryllium as a desirable material should be used pure in my understanding.

So Cute!
http://www.jbl.com/home/technology3d...try=HA&Region=

[tinitus]

Its easy to throw prices like that, when nobody know nothing about any of the drivers
As mentioned, "berylium" is such a fine word, with otherwise no meaning
The important details such as magnet motor design is still unknown, and in reality there may be very little behind the cones
I have just seen a 6.5" AurumCantus at 50 USD, which might be much better
I think that price would be easy to match, no bargain as far as I can see

[OzMikeH]

Beryllium oxide will give you cancer. I'm amazed they are using this for speakers, it's like using asbestos.

It may be an exotic material, but the design of the driver is far more important than the materials used. There are a lot of very good drivers out there with cones made from the same stuff you wipe your backside with. The marketing people prefer other materials are used, it makes their job easier.

These could still be great drivers, but you're paying a premium for an exotic material that may only be used for marketing reasons.

[Salas]

It can be extremely toxic during manufacturing. The fumes and dust are very toxic. I don't think it poses a danger as a finished sheet or foil. People that worked in old fluorescent lamp factories or in metallurgy making springs developed chronic lung disease and cancer.
As for use in speakers, it has its plus points. High rigidity, low mass, high dimensional stability, all much better than Alu or Ti. Yamaha NS1000M was famous for its Be domes, TAD uses it for many years and Focal made a fuss recently. Its well surpassed in its strong areas by synthetic diamond diaphragms though.