Pioneer SP-T22A-LR Add-on Speaker designed by Andrew Jones for Dolby Atmos Highly Acclaimed and Award Winning Speaker Series Add-On top firing speakers to make any flat top speaker Dolby 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