< p> Yamaha True X Sub Overview < br> < br> Add more bass to your True X Bar 40A soundbar with the True X Sub 100A Wireless Subwoofer from Yamaha. Simply Connect the Sub 100A to power and pair it with your existing SR-X40A soundbar to add room-filling bass to your system.< br> < br> < br> Key Features < br> < br> Made to work exclusively with the Yamaha True X Bar 40A Soundbar< /p>