A warm welcome to the Roku Community!
We understand you're having trouble with your subwoofer through your Roku TV. We're delighted to assist you. Please be advised that the input cables are the usual suspects when your subwoofer is not working properly. This is because any issue with the input cable can lead to a loss of signal transmission in the entire setup and lead to an audio issue. First, check if all the input cables are tightly plugged in.
If the problem still persists, please let us know.
Best regards,
John
