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Material four-system of ceramics used for vibration board
It is called with ceramics though it originally makes in "Furnace" though ceramics generally imagine pottery ceramics. The feature is firm and is fragile. It will be easy to understand this if the character of pottery is imagined. The single use is used difficultly in shape like metal + ceramics. The tweeter of use might be the main.
The most famous ceramics for the audio fan might be the diamond tweeters adopted for the B&W800 series. This belongs to the ceramics system. A surrounding gas that goes out resolves and is extracted from the heated tungsten filament in 2000 degrees to manufacturing [hageki]. There is the diamond vibration board by the transmitted speed of sound and is a theory value 1.5 times or more 16200m/s and the beryllium.
Pure boron (B4C) is a material adopted for the horn tweeter of DA-MA1 of the diamond tone that revived in 2005. It is paid attention as a material with a high ratio elasticity rate and an internal loss that doesn't exist in a past material.
As for the material of the ceramics system, various new materials are expected to be going to keep being being developed centering on a high-end faction in the future.