Thus, You must buy the best Bluetooth transmitter. You can check the link, if you don't know how to connect tv and transmitter:
How Bluetooth Transmitter Works
If you choose best Bluetooth transmitters you can enjoy best sound,with powered Bluetooth transmitter you get a light weight portable transmitter that is suitable for outdoor network setups. But the problem is the low range and battery life. While the AC power Bluetooth transmitters are best for home networks and often have the best signal strength and range.