The geometries of the Sonus faber Aida front panel and mid-high section have been designed to provide the midrange the maximum air cooling possible in order not to disturb its rear emission and thus to avoid any kind of sound compression. The internal shape of the box carefully simulated and optimized, and the wisely chosen and positioned sound-absorbing material complete this delicate task. All this aim to enhance the qualities of the loudspeaker that we believe represents the core and the essence of the whole system