5 definitions for W

  Watt : Unit of power. More watts mean more power, but how loud a system sounds also depends on speaker sensitivity and room size. See PMPO.

  Wavelength : The length of a wave. Sound at 50Hz in air has a wavelength of around 6.9 metres.

  Widescreen : More and more TV programmes, and nearly all DVD discs, are made in widescreen format. This can vary from 14:9 (a compromise ratio used by TV broadcasters) to 16:9 which is the ratio used on widescreen TV sets and most DVDs. Many films shown at the cinema are in 21:9, while conventional square TVs are 4:3.

  Woofer : The large drive unit in a speaker to produce bass frequencies.

  Wow : Slow variations in speed of a record or tape deck, making sustained notes sound unsteady.