Look at them curves!
The elegant curvature of the enclosure is more than a design affectation. The specific geometry of the cabinet eliminates internal standing waves, because reflections between boundaries are never in synchronism. Enclosure geometry is carefully calculated so that any vibration in the front baffle is immediately transferred to the rear where it is absorbed harmlessly in the rounded back profile integrated into the enclosure specifically to provide additional mass loading to aid in damping resonance and vibration.