Mordaunt Short Aviano 2 Speakers - Black - pair Powerful Y30 magnets further enhance Aviano's woofe Internal high density wadding for critical damping of standing waves Rear porting for improved bass characteristics; Easily removable front grill Curved front baffle improves rigidity and dispersion characteristics Dimensions (H x W x D): 320 x 205 x 298mm (12.8" x 8.2" x 11.9")