The Fusion 5.5 Bookshelf uses highly advanced drive units that include a 1” textile dome tweeter and 5.5” cast, Quiet Cone™  carbon wool driver to produce exceptional imaging and sound. Its enclosure features rigid MDF construction with ¾” thick front panel.  A minimum phase, pure polypropylene, crossover optimizes the integration of the tweeter/driver to produces less than a 2 db variation in frequency response.  Sonic attributes include superb tonality, pinpoint imaging and a wide sound stage.