Bose speakers use proprietary engineering designs to achieve a large amount of sound from smaller speakers. Most of these designs revolve around use of folded transmission lines, which Bose calls Acoustic Waveguides. These designs allow compact enclosures and use of inexpensive drivers. The theory behind use of this design choice is an essential and defining element in the Wave radio, so named due to the use of their Waveguide topology. Other small Bose products such as the SoundDock iPod base also use transmission lines to produce large sound from smaller packages. Writer Bio
