BIGGER TRACTRIX HORN: A new, larger 90° x 90° silicone composite hybrid Tractrix horn provides crisper, clearer dialogue. LINEAR TRAVEL SUSPENSION (LTS) TITANIUM DIAPHRAGM TWEETER: The exclusive LTS minimizes distortion for enhanced, detailed performance. VENTED TWEETER DESIGN: The vented tweeter housing enhances the detail in what you hear. ALL-NEW CERAMETALLIC WOOFERS: Updated for absolutely flawless sound reproduction, minimum distortion, and maximum efficiency. TRACTRIX PORTS: Utilizing Tractrix geometry, the Reference Premiere ports allow for the most efficient, fastest air transfer from the cabinet for cleaner, more powerful bass. ADVANCED CABINET DESIGN: Additional bracing and a divided cabinet minimizes vibrations with an improved input panel and furniture grade materials and finishes make these speakers a statement piece for any room. REMOVABLE GRILLE: Attaches magnetically for an elegant transition from powerful showstopper to discrete performance piece.