Avantree HT41899 Wireless Headphones and Transmitter User Manual

Box Contents

The package includes the following items:

• A: Headphones X 2
• B: Transmitter
• C: Dual headphones stand
• D: Power cable for transmitter
• E: Power cable for headphones
• F: Optical audio cable
• G: AUX 3.5mm Audio Cable
• H: 3M tape for transmitter

Product Introduction (Headphones)

Product Overview

The headphones feature controls and indicators for operation:

• 1 OFF/ON / PAIR: A switch to turn the headphones on/off or enter pairing mode.
• 4 EQ mode button: A button to switch between balanced and clear voice EQ modes.
• 2 Volume buttons: '+' and '-' buttons to adjust volume.
• 3 Reconnect / Mute button: Press once/twice to mute/unmute, or press once to activate reconnection if auto-connect fails.
• Ⓐ LED indicator: Visual feedback for the headphone status.

Button Functions

LED Indicators

Product Introduction (Transmitter)

Product Overview

The transmitter features controls, indicators, and connection ports:

• 8 Volume control buttons: '+' and '-' buttons to adjust volume.
• B Codec indicator: Shows the current audio codec being used.
• D Bluetooth status for 1st/2nd headphone: Indicates the connection status for each headphone.
• 6 Pairing button for 1st headphone: Initiates pairing for the first headphone.
• 7 Pairing button for 2nd headphone: Initiates pairing for the second headphone.
• C Audio input indicator: Shows if an audio signal is detected.
• 5 ON/OFF switch: A switch to turn the transmitter on/off.

The transmitter has the following ports:

• DCIN: For power connection.
• OPTICAL: For optical audio input.
• AUX: For 3.5mm audio input.

Button Functions

LED Indicators

Setting Up

Connecting to Your TV

The transmitter requires a power source. Connect it using either:

• A TV's USB power port (recommended for synchronized power on/off with the TV).
• A nearby wall outlet using a 5V / 500mA-2A rated USB charger (e.g., a phone charger). A USB adapter may be required; contact support@avantree.com for assistance.

Option 1 - Optical port (recommended)

Connect the provided optical audio cable from the TV's "OPTICAL OUT" port to the transmitter's optical port.

[Diagram: Shows TV optical out port, optical cable, and transmitter optical port connection.]

Option 2 - AUX 3.5mm port

Connect the provided AUX 3.5mm audio cable from the TV's AUX 3.5mm output port to the transmitter's AUX 3.5mm port.

[Diagram: Shows TV AUX out port, 3.5mm audio cable, and transmitter AUX port connection.]

Option 3 - RCA port

Connect an RCA adapter (not included) to the AUX 3.5mm audio cable. Plug the red and white RCA connectors into the TV's "AUDIO OUT" ports, then plug the other end into the transmitter's AUX 3.5mm port.

[Diagram: Shows TV AUDIO OUT ports (red/white), RCA adapter, 3.5mm audio cable, and transmitter AUX port connection.]

Connecting the Headphones to the Transmitter

Once the transmitter is set up, connect the headphones:

1. STEP 1: Turn on both headphones by sliding the ON/OFF/PAIR switch to the ON position. The headphone LED indicator should start flashing blue.
2. STEP 2: Power on the transmitter by sliding the ON/OFF switch to the ON position. The transmitter's Bluetooth LED will flash blue.
3. STEP 3: Keep the headphones close to the transmitter. They should connect within 3-5 seconds. Upon successful connection, both the headphone and transmitter LEDs will turn solid blue.

NOTE: Some smart TVs may automatically scan for and attempt to pair with nearby Bluetooth devices. If your TV prompts you to connect your headphones or transmitter, please select "DENY" to ensure proper pairing with the Avantree system.

Setting Up Your TV (FOR OPTICAL CONNECTIONS ONLY)

If you connected your TV via the optical OUT port, you may need to adjust TV settings for audio output.

1. STEP 1: Use your TV's remote control, press the SETTINGS button, and navigate to the AUDIO tab in the settings menu. (Note: Setting names may vary by TV brand/model).
2. STEP 2: Go to AUDIO OUTPUT and select "OPTICAL OUT / DIGITAL OUT". Many TVs configure this automatically.
3. STEP 3: Set the Audio Output format to "PCM / STEREO" or "DOLBY" OFF.

[Diagram: Shows TV settings for Audio Out and Digital Audio Format with options like PCM/Stereo and Dolby OFF.]

For assistance finding these settings, scan the QR code for your TV brand or visit avantree.com/41899/tv-audio-settings for a detailed guide.

NOTE 1: Smart TVs might reset settings after system updates. Ensure your audio output/input format is set to "PCM" and not "AUTO" or "Dolby."

NOTE 2: When using streaming services like Netflix or Amazon Prime, you may need to start playback before changing audio settings to "PCM."

Charging the Headphones

Connect the headphones to a power source using the provided power cable. The charging indicator shows approximately 2.5 hours for a full charge. The LED will change from solid red (charging) to off (fully charged).

[Diagram: Shows headphones connected to a charging cable, with an indicator showing charging time and battery level.]

Advanced Features

Using the Headphones with Your Phone/Tablet

1. STEP 1: Turn off or unplug the transmitter.
2. STEP 2: Turn on the headphones and slide/hold the ON/OFF/PAIR switch to the PAIR position until the LED indicator flashes red & blue.
3. STEP 3: On your phone or tablet, turn on Bluetooth and select "Avantree AS9S" from the list of available devices.

NOTE: The headphones are factory-paired with the transmitter and may not automatically reconnect to your phone/tablet. For subsequent use, you can either press the Reconnect/Mute button (3) once on the headphones or select "Avantree AS9S" from your phone/tablet's Bluetooth menu.

Factory Reset

If you encounter issues with auto-reconnection after using the headphones with other devices, a factory reset may be necessary.

Very Important: Turn off Bluetooth on other devices before resetting to avoid interference.

Reset the Transmitter

• Power on the transmitter.
• Press and hold both the '+' and '-' buttons simultaneously for 7 seconds. The transmitter's Bluetooth LED will light up PINK and then turn off, confirming the reset.
• The transmitter will re-enter pairing mode, indicated by the Bluetooth icon next to "1" flashing RED & BLUE.
• Turn the transmitter OFF after resetting.

Reset the Headphones

• Power on each headphone.
• Press and hold both the '+' and '-' buttons simultaneously for 10 seconds until both RED and BLUE LEDs light up together (appearing PINK). This indicates the reset is complete, and the headphones will automatically enter pairing mode, flashing RED and BLUE alternately.
• Turn the headphones OFF after resetting.

Reconnecting

• Turn on both the transmitter and headphones.
• Wait for 5-10 seconds. They should automatically reconnect. You will see a SOLID BLUE light on both devices and hear "Connected" from the headphones.

Specifications

Transmitter

Headphones

FAQ

I have a Samsung / LG TV. Why are my headphones failing to reconnect to the transmitter?

Samsung / LG smart TVs may automatically pair with any available Bluetooth devices, which can interfere with the Avantree headphones reconnecting to their transmitter. To resolve this:

• DENY the Device: If a TV prompt asks to Allow or Deny/Block a device, select DENY/BLOCK to prevent it from connecting.
• REMOVE the Device: If the device is already paired, navigate to your TV's settings: SETTINGS > GENERAL > EXTERNAL DEVICE MANAGER >DEVICE CONNECTION MANAGER > DEVICE LIST > EDIT > Select all Avantree devices > DELETE. (Note: Menu paths may vary by TV brand/model).
• Turn OFF the TV: Physically turn off the TV or unplug it. Using the remote control only puts the TV into standby mode, which may still allow connections.

Can I have audio through my TV's speakers and wireless headphones at the same time?

This functionality depends entirely on whether your TV supports simultaneous audio output to multiple devices. You can test this by trying different methods. For more details, please refer to avantree.com/pages/support/ht41899-bluetooth-dual-headphones-tv-set.

Contact Us

For support or inquiries, please contact Avantree.

Email: support@avantree.com