Beryllium and aluminium are two metals used in the manufacture of loudspeakers.
Beryllium is a light, rigid, blue-grey metal found in mineral rocks. Aluminium is a heavy, slightly rigid, silvery-white metal found in the earth’s crust.
Here are the advantages of using beryllium in an audio system :
- Weight : 2.5 times lighter than aluminium.
- Rigidity : 7 times more rigid than aluminium.
- Speed of propagation of sound frequencies : Reduction of undesirable resonances.
- Influence on transducer response : Faithful restriction of sound details.
- Price : Higher due to its rarity.
The use of beryllium provides a perfect balance between lightness, rigidity and damping. This technology is present in FOCAL products such as the Sopra, Kanta, Utopia and many others.