JBL LIVE 400BT On-Ear Wireless Headphones User Manual

1. Introduction

The JBL LIVE 400BT are on-ear wireless headphones designed to deliver JBL Signature Sound. These headphones feature Bluetooth connectivity, a built-in microphone for hands-free calls, and integrated voice assistant support (Amazon Alexa). They also include Ambient Aware and TalkThru technologies for enhanced situational awareness and convenient conversations without removing the headphones. The headphones offer up to 24 hours of battery life and can be used with an audio cable when the battery is depleted.

2. What's in the Box

Upon opening the package, ensure all items are present:

• JBL LIVE 400BT Headphones
• Charging Cable
• Aux Cable (3.5 mm)

Image: JBL LIVE 400BT headphones shown with the included charging cable and 3.5mm aux cable.

3. Setup

3.1. Charging the Headphones

Before first use, fully charge your JBL LIVE 400BT headphones. A full charge provides up to 24 hours of playback. A quick 15-minute charge can provide an additional 2 hours of listening time.

1. Connect the provided charging cable to the charging port on the headphones.
2. Connect the other end of the charging cable to a USB power source (e.g., wall adapter, computer USB port).
3. The LED indicator on the headphones will show charging status. It typically turns off or changes color when fully charged.

3.2. Powering On/Off

• To power on, slide the power switch located on the right earcup.
• To power off, slide the power switch back to the off position.

3.3. Bluetooth Pairing

The JBL LIVE 400BT headphones use Bluetooth 4.0 for wireless connectivity with a range of up to 10 meters.

1. Ensure the headphones are powered off.
2. Slide the power switch to the "on" position and hold it for approximately 3-5 seconds until the LED indicator flashes blue, indicating pairing mode.
3. On your device (smartphone, tablet, computer), enable Bluetooth and search for available devices.
4. Select "JBL LIVE 400BT" from the list of available devices.
5. Once connected, the LED indicator will turn solid blue.

Image: The right earcup of the JBL LIVE 400BT headphones, highlighting the power switch and LED indicator for Bluetooth pairing.

4. Operating the Headphones

4.1. Basic Controls

The headphones feature intuitive controls on the earcups for managing audio and calls.

• Play/Pause: Press the multi-function button once.
• Next Track: Double-press the multi-function button.
• Previous Track: Triple-press the multi-function button.
• Volume Up/Down: Use the dedicated volume buttons.
• Answer/End Call: Press the multi-function button once during an incoming call or active call.
• Reject Call: Press and hold the multi-function button for 2 seconds during an incoming call.

4.2. Voice Assistant (Amazon Alexa)

Access Amazon Alexa directly from your headphones. Use the JBL App to set up your voice assistant preference.

1. Ensure your headphones are connected to your smartphone via Bluetooth.
2. Download and open the JBL Headphones App.
3. Follow the in-app instructions to select and configure Amazon Alexa as your voice assistant.
4. Once configured, tap the left earcup to activate Alexa and issue commands (e.g., "Play my favorite playlist," "Check the weather").

4.3. Ambient Aware and TalkThru Technology

These features allow you to stay connected to your surroundings or have conversations without removing your headphones.

• Ambient Aware: A touch of the Ambient Aware button (located on the left earcup) increases ambient sound, allowing you to hear what's happening around you while music continues at a lower volume.
• TalkThru: Activate TalkThru mode by pressing the TalkThru button (located on the left earcup). This significantly drops the music volume, enabling clear conversations with others without removing the headphones.

4.4. Wired Connection

If the battery runs out or you prefer a wired connection, use the provided 3.5mm audio cable.

1. Plug one end of the 3.5mm audio cable into the audio jack on the headphones.
2. Plug the other end into your audio source's 3.5mm output.
3. The headphones will function passively, without requiring battery power.

5. Maintenance

Proper care ensures the longevity of your JBL LIVE 400BT headphones.

• Cleaning: Use a soft, dry cloth to clean the earcups and headband. Avoid using harsh chemicals or abrasive materials.
• Storage: When not in use, store the headphones in a cool, dry place. Avoid extreme temperatures. The headphones are foldable for compact storage.
• Battery Care: To preserve battery life, avoid fully discharging the headphones frequently. Charge them regularly, even if not in constant use.

Image: JBL LIVE 400BT headphones shown in a folded position, demonstrating their portability and ease of storage.

6. Troubleshooting

If you encounter issues with your JBL LIVE 400BT headphones, refer to the following common solutions.

6.1. No Power / Cannot Turn Off

• Charge Battery: Ensure the headphones are fully charged. A low battery can cause unexpected behavior.
• Power Cycle: If the headphones are stuck on or cannot be turned off, try connecting them to a charger for a few minutes, then attempt to power off again.
• Factory Reset: If the issue persists, a factory reset may resolve it. Consult the JBL support website or the full user manual for specific factory reset instructions for your model, as this often involves a combination of button presses.

6.2. Bluetooth Connectivity Issues

• Ensure Pairing Mode: Verify the headphones are in pairing mode (flashing blue LED).
• Device Proximity: Make sure the headphones are within 10 meters of your Bluetooth device.
• Forget Device: On your device, "forget" or "unpair" the JBL LIVE 400BT from your Bluetooth settings, then attempt to pair again.
• Restart Devices: Restart both your headphones and the Bluetooth device.

6.3. No Sound or Low Volume

• Check Volume Levels: Ensure volume is turned up on both the headphones and your connected device.
• Correct Output: Verify that your device is sending audio to the JBL LIVE 400BT.
• Wired Connection: If using the aux cable, ensure it is fully inserted into both the headphones and the audio source.

7. Specifications

8. Warranty and Support

For warranty information, technical support, or further assistance, please visit the official JBL support website or contact their customer service. Keep your proof of purchase for warranty claims.

You can find additional resources and contact information on the JBL Store on Amazon.