Sonus faber Extrema.

Sonus faber writes: “Introduced in 1991, Extrema is the progenitor of Sonus faber’s technological innovation. The vertically translaminated structure of the cabinet is combined with a passive reflex made of a racetrack driver with selectable resistances, in order to guarantee an adaptation of the low frequencies useful for perfecting the positioning of the speaker in the environment.” 

“The surface coating of the woofer is handmade, following the best Sonus faber traditions.”