PLEASE NOTE: All loudspeakers are now sold as individual units. PRICE PER UNIT Complements All Focal 5.1 Systems The intense and deep sound of the Sub Air complements all 5.1 systems. The wireless technology makes integration into interiors easy, removing all constraints due to cable length. The flat and compact design allows you to fit it into all kinds of spaces. Easy to use and install, the Sub Air turns on at your command and turns itself off when no more sound is being produced. Its Wi-Fi radio connectivity puts a permanent end to the eternal question of where to put the cables. A discreet emitter is connected to the rear of the amplifier and makes cabling entirely unnecessary.