Before You Start: No sound may be caused by disconnected headphones, incorrect TV audio settings, or a loose cable. Turn on the Crescendo Me transmitter and headphones, then play a TV program or video with sound.
Step 1 – Check the Headphone Connection
- Set the headphone mode switch to TV/BASE, not Bluetooth.
- Keep the headphones near the transmitter and check the headphone LED.
Headphones Not Connected? Follow the guide below to pair the headphones with the transmitter.
Crescendo Me – Pair / Add Headphones →Step 2 – Check the Audio Signal & Settings
Play TV audio and check the transmitter's Audio Signal light.
Choose your TV connection type and follow the matching instructions.
Step 3 – Check Connections, Volume & Restart
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Check the cable connection:
Ensure the cable is securely connected to the correct input port on the transmitter:
HDMI ARC
Connect to the HDMI ARC 1 port.
Optical Cable
Connect to the OPT IN port.
AUX Cable
Connect to the AUX IN port.
- Check SELECT INPUT on the transmitter. Choose HDMI ARC 1 or OPT/AUX to match your cable.
- Increase the volume on the headphones and make sure the TV is not muted.
- Try another audio cable of the same type.
- Still no sound? Restart the transmitter, headphones, and TV, then test again.
No Sound on Certain Apps or Cable Boxes? Play the affected program and set the TV or streaming device's audio format to PCM / Stereo.
Cable Box Audio Settings →Still No Sound?
Tell us your TV model, connection type, and transmitter/headphone LED status.
Contact Avantree Support →
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