Full-range sound from under 16 inches! You’ll be wondering – Where’s the SUB? ¬†Introducing the NEW Atlantic Technology AT-2. The compact AT-2 speaker delivers a level of deep bass not previously thought possible from a “bookshelf”-sized speaker. The AT-2′s patent-pending H-PAS bass system (Hybrid Pressure Acceleration System) is the reason. ¬†AT squeezed what they learned.