Ensemble - Fix No Sound – Avantree Support

Ensemble (HT5150) headphones connected but no TV sound? The issue may be caused by transmitter power, headphone pairing, TV audio settings, or an audio cable. Follow these checks in order.

BEFORE YOU START

Ensemble headphones should connect to the Ensemble transmitter (base), NOT directly to your TV's Bluetooth.

Turn on your TV, transmitter, and headphones. Play a TV channel or video with sound while following the steps below.

Check the Transmitter Power

Make sure the transmitter's side power switch is ON.
Check whether the transmitter's indicator light is illuminated.

Transmitter Has a Light?

Continue to Step 2.

No Light or Transmitter Keeps Turning Off?

Connect the transmitter to a working USB wall power adapter.
Try another compatible USB power cable, adapter, or wall outlet.
Make sure the side power switch is ON and check the indicator again.

If the transmitter still has no light or repeatedly shuts off, contact Avantree Support .

Check the Headphone Connection

Check the indicator lights on the transmitter and headphones.

Solid Blue

Connected. Continue to Step 3.

Flashing Blue

The connection may not be established.

No Light

Check the device's power and charging.

Headphones Not Connected?

Turn OFF Bluetooth on nearby phones, tablets, and computers, and avoid pairing the headphones directly with the TV. Pair the headphones with the transmitter and lock the connection.

Open Ensemble Pair & Lock Guide

Both devices show connected but still no sound? Continue to Step 3.

Check Your TV Sound Settings

Open your TV's Settings → Sound / Audio. Check the settings below based on your connection type.

OPTICAL CONNECTION

Using Optical / Digital Audio

TV Sound Output Optical / Digital Audio Out

Digital Audio Format PCM / Stereo

AUX CONNECTION

Using AUX / 3.5 mm

TV Sound Output Headphones / Audio Out

TV Volume Turn Up / Unmute

Important for Optical Connections

Make sure your TV's Digital Audio Format is set to PCM / Stereo. Dolby, DTS, Bitstream, or Auto settings may prevent the transmitter from receiving compatible TV audio.

Need help finding these settings? Select the guide that matches your setup.

Find PCM Settings for Your TV Streaming Device / Cable Box Audio Guide

These buttons open step-by-step instructions in a new tab.

No sound only when using a cable box, streaming device, or certain apps? Check that device's audio settings and select PCM / Stereo when available.

Check the Cable & Volume

Make sure the audio cable is firmly connected to the TV and transmitter.
Increase the headphone volume. If using AUX, also increase the TV volume.
Make sure the TV is not muted. Try another TV channel, video, or app.

IMPORTANT — Try Another Audio Cable

If there is still no sound, replace the existing audio cable with another cable of the same type (Optical or AUX).

Connect both ends firmly and test again. A faulty audio cable can cause no sound even when the transmitter and headphones are successfully connected.

Still Need Help?

Please include your TV brand and model, Ensemble HT5150 batch number, connection type (Optical or AUX), transmitter and headphone LED status, and whether you have tried another audio cable.

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