Oberon has demonstrated in the Kinectrics arctesting laboratory that aluminized fabric can act to initiate an arc by reducing the air gap between the electrodes used in the ASTM F1959 arc test method.
The Arc’s 5.1.2-channel ... speaker grille (just to the left of the volume controls) and you can feel the air being pushed out by that driver, even at moderate volume levels.
The Sonos Arc (exploded view) Sonos The Arc Ultra ... It has two membranes (the portion of the driver that moves air) in an area that would normally only have room for a single membrane.
Working together, these motors are apparently able to push the cone to shift far more air and produce far more bass. Sonos specifically claims that the Arc Ultra can produce double the bass of the ...