Active speakers - speakers with built-in amplification. Available from 8" to 15", two-way and three-way configurations. Compared to passive speakers active speakers have a crossover design that gives the designer much greater control over the signal and are far less prone to losses and distortion when compared to a Passive Speakers filter alternative.  JD's Sound and Lighting,441 Maroondah Hwy,Lilydale VIC 3140 Australia [email protected] [email protected] 1300 537 686