A phaser array is an arrangement of phaser emitters located in strategic areas of a starship, space station, or other vessel.
During the firing sequence of some shipmounted arrays, phaser energies would travel along the emitter strip and converge at the best position for targeting.
The Avandar has 11 Type X Phaser Arrays. Saucer: 3 Dorsal surround strips, 3 Ventral surround strip Engineering: Aft Port Dorsal, Aft Starboard Dorsal, Ventral, 2 Aft Pylons
The Out Put of these is 66,000 GigaJoules.