The exclusive convex honeycomb membrane is currently manufactured up to a size of 10 inches and consists of the best combination of flexural and torsional stiffness.

It is virtually indestructible, even in the case of a very strong overload.




With CVD diamond and alpha corundum ceramics we have already two of the very best membrane materials on earth, so why search for a new one?

The largest ceramic dome, which we are able to produce without suffering any loss of quality has a maximum diameter of 160 mm. It is used for example for our C220- series. The diameter of our diamond dome is significantly smaller.

Conducting research for the development of larger bass cones, we discovered some interesting solutions.

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