Unlike traditional speakers that project sound in one direction, a sound generator in the base of the Greensound speakers vibrates the glass to project the sound from both sides. Different areas of the glass are responsible for producing different frequency sounds - the curved area at the top produces high frequency sounds, the middle produces mid-range sounds, while low frequencies are produced by the area at the bottom near the base. The use of glass also provides the opportunity for some nice color changing lighting to be built into the base.
Interesting that the subwoofers go to over 100 kHz, more than an order of magnitude over the acual speaker units. Is this a typo, or are they making up for the somewhat lacking high range of the stereo units?- No, not a typo. You're right though. It does raise questions about the performance of the actual speaker units when the subwoofer has a higher frequency response than they do. Ed.
Bravura stablemate and doesn't pack the same punch. It has an output of 25 Watts, frequency response of 60 Hz to 180 kHz and decibel level of 91.8.p
btw, 30 bucks turns your existing windows into speakers.http://www.thinkgeek.com/product/eaf8/?srp=36