ClearView Audio showed off its Clio Bluetooth wireless speaker at CES 2014, which boasts a unique "invisible" design consisting of an ultra-thin, curved acrylic glass transducer. The speaker's design allows for it to output sound in multiple directions, with volume up/down, mute, and Bluetooth buttons on its side.
ClearView Audio's patented Edge Motion audio systems use a differentiating mechanical principal to generate sound. Instead of pushing from behind, like a traditional cone speaker does, Edge Motion-driven speakers actuate a thin membrane along the side in a manner that creates an extremely efficient, piston-like motion in front. The resultant speaker system is thin and lightweight with the ability to produce a rich, full sound across the audio range.
Article Link: CES 2014: ClearView Audio Shows Off 'Clio' Clear Glass Wireless Speaker