Elac Concentro 2.0Concentro 2. 0 Floorstanding Speaker The Concentro 2. 0 cannot be mistaken for any other speaker, featuring a complex base machined from a single block of aluminum and weighing more than 55 pounds. The aluminium sandwich woofers in a push push pull pull arrangement are characterized by high internal damping (cardboard cone) and high torsional rigidity (aluminium dome) and deliver an enormous but controlled bass down to the deepest subsonic range. Oval