ClearView launched a wireless transparent speaker, called Clio, at CES 2014. The Bluetooth speaker features a an ultra-thin acrylic glass transducer that can disperse sound waves in multiple directions. There is also a subwoofer underneath Clio. It has a wireless range of 30 feet.
Clio can be pre-ordered at clearviewaudio.com/
for $349. It is expected to ship in late March 2014.
Here is a video of the Clio at CES 2014 from CNET. CNET's Luke Westaway says the sound is impressive, although he notes the crowd CES floor is not an ideal place to test a speaker. Take a look: