Highly Acclaimed and Award Winning Speaker Series;Add-On top firing speakers to make any flat top speaker Dooby Atmos and DTS:X compatible;Concentric Driver including a 4 woofer and 1/2 tweeter for improved frequency response and sound placement in enabled Atmos and dts:x speaker configurations;Gold 5-way binding posts for more secure speaker wire connection;RF Molded Curved Cabinets to reduce internal standing waves