Alpha corundum or sapphire is a very good choice for the production of loudspeakers. Our invention enables a light and at the same time stiff membrane which is also well damped. Our unique ceramic loudspeakers meet all requirements.



Bass- Midrange


To understand the advantage of this elaborate production, the general requirements to a speaker cone can be summarised as follows.

It should be substantially 1. easy 2. stiff and 3. provided with high interior absorption. Since these claims are constructive mutually contradictory, all conventional membrane materials are extremely full of compromises. And at least one of the requirements mentioned above can be described as unsatisfactory.


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