The Belong range is a study in material science.
DuPont ™ Corian® is a polyacrylic & bauxite ore compound. It is a popular surface material for high-end kitchens and bathrooms and has been since the 1970s.
Why has Chario chosen it for its cabinets?
Because it has a very high isotropic value.
A loudspeaker cabinet must look good and withstand high pressure variations without leakage.
Concrete - 2,400 kg/m3 density figure.
DuPont ™ Corian® has 1,700 kg/m3 density is very tactile and beautiful, furthermore it spreads vibrational energy equally in all directions at high longitudinal wave speeds, i.e isotropy.
Wood 300 kg/m3 -700 kg/m3 (orthotropic)
When a loudspeaker driver raises air impulses inside a Corian® cabinet, it reaches all internal surfaces instantly (the air density variation of low frequencies are produced as a pressure field without waves). The structure inflates (or deflates) as a whole, like a balloon.
Why not use a balloon?
A balloon is thin, light and less elastic (steel possesses greater elasticity than rubber!) it expands and contracts easilly. It is a poor material for loudspeaker use because unwanted energy (expansion/contraction) is transferred back to the drive-units.
DuPont ™ Corian® on the other hand is thicker, heavier and more elastic ( high Young's Modulus) so its inertia acts against the moving air. Furthermore due to it's isotropy properties, longitudinal high speed waves occur at the same time as transient waves, ( see Newton Law). This gifts the loudspeaker twice:
1. No pressure leakage: increased driver control
2. No vibration losses: no transient interference.