the audio will be delayed so you would need to connect to the echo device via fire tv or fire tv stick over wifi for no audio lag also theres a feature called time synchronization which helps to prevent audio lagconnecting smart tv to echosmart tv owners need to first check whether the tv model supports alexa or not in some models from lg and sony there are dedicated alexa apps available that help connect echo devices with tv users need to use the same wifi network and follow instructions shown on the app to pair echo devices with the tv connecting nonsmart tv or smart tvs without alexa support to echoon the other hand if you dont have a smart tv then the easiest way to get alexa support is by purchasing a fire tv stick along with echo dot device just connect the fire tv stick to your tv and pair the fire tv stick with the echo dot you will have to change the settings of the tv to get sound output from it and also support voice commands soundbar vs smart speakers what you need to knowthe biggest concern of using a smart speaker as audio output for your tv is latency or the audio lag which can ruin the experience while it may seem that a smart speaker may solve a common purpose of a bluetooth speaker and voice control for tv what you need to understand is the cost of a decent soundbar or speaker is lower than owning a echo device and fire tv stick also the audio quality of a soundbar is far superior