Quartet 2 - Fix No Sounds – Avantree Support

NO SOUND TROUBLESHOOTING

Quartet 2 – No Sound From Headphones?

Follow these steps to restore sound on your Quartet 2 (5049-P).

Before You Start: Turn on the Flex Base transmitter and headphones. Play a TV channel, video, or music with sound.

Step 1 – Check the Audio Connection

Make sure the audio cable is firmly connected.
Connect your audio source to the Flex Base's INPUT, not OUTPUT.
Select the correct input on the Flex Base: OPT, AUX, or Bluetooth.

Important: Quartet 2 headphones connect to the Flex Base using 2.4 GHz, not Bluetooth. Bluetooth is for connecting an audio source to the transmitter.

Step 2 – Check Audio Settings

Open the connection you are using:

Optical Cable

TV Optical OUT to Flex Base OPT IN.
TV Sound Output: Optical / Digital Audio Out.
Digital Audio Format: PCM / Stereo.
Flex Base input: OPT.

Find PCM Settings for Your TV →

AUX / 3.5 mm

TV Headphone / Audio OUT to Flex Base AUX IN.
TV Sound Output: Headphones Out.
Increase the TV volume.
Flex Base input: AUX.

Bluetooth – Phone, Computer, or TV

Select Bluetooth input on the Flex Base.
Connect your phone, computer, or compatible TV to the Flex Base through Bluetooth settings.
Select the Flex Base as the audio output and play sound.

Note: Do not pair the Quartet 2 headphones directly with your phone or TV.

Step 3 – Check the Headphone Connection

Turn on the Flex Base and headphones.
Keep the headphones close to the Flex Base.
Check the headphone status light.

Solid Blue – Connected.

Flashing Blue – Powered on, but not connected.

Not connected? Pair the headphones with the Flex Base.

Quartet 2 – Connect / Add Headphones →

Step 4 – Check the Volume and Mute

Press Volume + on the headphones.
Press the center Mute button to unmute if needed.
Increase the Flex Base volume using +.
Try another video or audio source.

Step 5 – No Sound on Certain Apps or Channels?

Set your TV or streaming device's audio format to PCM / Stereo.

Cable Box Audio Settings →

Step 6 – Restart and Test

Turn off the Flex Base and headphones.
Reconnect the audio cable, if using one.
Turn on the Flex Base, then the headphones.
Play audio and test again.

Still No Sound?

Tell us your audio source, connection type, and headphone LED status.

Contact Avantree Support →