AS50-Q - Fix No Sound – Avantree Support

Before You Start: No sound usually means the headphones are not connected to the transmitter, the TV is not sending a compatible audio signal, or the audio cable is loose. Follow these steps to find and fix the problem.

Step 1 – Check the Headphone Connection

Turn on the Ensemble transmitter and AS50Q headphones. Check the indicator lights on both devices.

Solid Blue – The headphones are connected to the transmitter. Both devices should show solid blue. Continue to Step 2 →

Headphones Not Connected? Pair the headphones with the transmitter, then lock the connection so they can reconnect more reliably.

Pair & Lock the Headphones →

Step 2 – Check the TV Audio Settings

Play TV audio and choose the settings that match your cable connection.

Optical Cable

TV Sound Output: Optical / External Speaker.
Digital Audio Format: PCM / Stereo.

AUX / 3.5 mm

TV Sound Output: Headphones / Audio Out.
Increase the TV volume.

Find PCM Settings for Your TV →

Why PCM? For Optical connections, the transmitter needs a compatible stereo signal. Set the TV audio format to PCM / Stereo. Dolby, DTS, or Bitstream may cause no sound.

Step 3 – Check the Cable, Volume & Restart

Check the cable connection: Make sure the cable is securely connected from the TV to the transmitter.
Increase the volume on the AS50Q headphones. For AUX, also increase the TV volume.
Make sure the TV is not muted. Try another channel, video, or app.
Reconnect the cable firmly. Turn off the transmitter and headphones, then turn them back on and test again.

Still No Sound?

Tell us your TV model, connection type (Optical or AUX), the transmitter’s audio signal indicator status, and whether the headphones connect to the transmitter.

Contact Avantree Support →