Revox speakers True studio sound quality Revox Invisible Speaker series The innovative, millimetre-thick flat loudspeakers of the Invisible Speaker series are installed completely hidden beneath the plaster, paint or wallpaper, turning your wall or ceiling into invisible sound sources. It's an unbelievable listening experience: the soundboards were developed specifically for this purpose to provide a wide emission. This makes the harmonious sound equally enjoyable from anywhere in the room, regardless of where the listener is. Technical data: Revox Invisible Speakers Invisible U20 Mini U20 Mini Carbon U20 U20 Stereo U40 U40 Carbon capacity (Watt) Impedance (Ohm) 8 8 82 x 8 44 rYx x x x XXXIXXXY i Ytx x xcYrT^tjmcii 1 TjLXrxxXXJ