JBL Quantum 400

FAQs & How-Tos

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7.1 Surround configuration set up guide

To configure the 7.1 Surround feature on your PC, please follow the guide below:

1. In the left corner on your screen right next to the Windows logo, click on the spy-glass to start a search on your PC.
2. Type in Sound --> then select Change System Sounds:

3. Make sure that your the Quantum Headphones is your Default Device for both Speakers ( Game ) and Earphone ( Communication device )

4. To configure the 7.1 Surround feature, right click on the Speakers --> then select Configure Speakers

5. Select 7.1 Surround and click on Next

6. Make sure that all boxes are selected, then click Next

7. Make sure both boxes are selected, and then click Next

8. Click on Finish. Now your Quantum headphones is configured for 7.1 Surround sound. The configuration will remain after rebooting PC or reconnecting headphones.

Enjoy your sound experience #SoundIsSurvival #DareToListen

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Hearing your own voice through the headphones (Sidetone feature)

To stop hearing your own voice through your headphones, please start the JBL QuantumENGINE software, navigate to the "Microphone" tab, and change the sidetone setting to 0.

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How do I clean my JBL Quantum 910 Wireless headset?

You can clean it by wiping it gently with a damp cloth. Take extra care not to let water leak into the speaker chamber, as it will damage the speaker drivers.

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How RBG lighting work for console games

JBL Quantum 400 and ONE are compatible with USB C to A cable to enjoy PS4 console with RGB Lighting on, and Quantum 600 and 800 with wireless-enabled by USB dongle also gives lighting moment on PS4 console games.

*NOTE that RGB will not light up when connecting with 3.5mm cable to any device (PC, Console, Mobile, etc.) because the cable doesn't have power enough for the RBG lighting.

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How to set up your microphone
Ensure that only one voice chat application is in use while in-game. Be sure you hear a click when the microphone is flipped down. The microphone will only function when it is flipped down fully. If you see a red LED on the microphone, it is muted.

Check that the PC is using the correct recording device.

1. Go to Control Panel

2. Select Sound

3 Select Recording

4. Make sure to select the proper recording device.
1. Right-click on it Quantum headset.
2. Now select "Set Default Device" or "Select Default Communication Device"
5. Check the microphone levels by right-click on your Quantum headset.

6. Go to Properties

7. Chose Levels and adjust accordingly
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How to set up your microphone
Ensure that only one voice chat application is in use while in-game. Be sure you hear a click when the microphone is flipped down. The microphone will only function when it is flipped down fully. If you see a red LED on the microphone, it is muted.

How to check your PC settings for the correct recording device
1. Go to Control Panel

2. Select Hardware and Sound

3. Click on Sound

3 Select Recording

4. Make sure to select the proper recording device.
1. Right-click on it Quantum headset.
2. Now select "Set Default Device" or Select "Default Communication Device"
5. Check the microphone levels by right-click on your Quantum headset. Then click on Properties

6. Choose Levels.

7. Adjust accordingly.

Please also make sure the volume control on the headset is turned up. Rotate the volume wheel on your headset to increase the volume.
Check that your headset's Game-Chat balance dial and ensure that the balance is correct, you might refer to the screenshot below from the QuantumEngine PC software.

If you still cannot hear the game or music audio, or if the volume is still very low, check if the TalkThrough is activated via the QuantumEngine software.

Finally, you can also do a short press on the Smart Ambient button on the headset (if your headset, has this feature)
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How to switch between Game and Chat balance

Yes, you can adjust the game and chat audio balance by rotating the dial-up and down. When you rotate the dial, you'll feel a notch that indicates the balance is 50% game and 50% chat. The slider on Quantum ONE is different and has no notch but instead a visual indicator.

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JBL QUANTUM ENGINE: Software Update Release Notes
JBL QUANTUM ENGINE
Software Update Release Notes

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Version: 2.0.20
Release Media: Via QuantumENGINE
Release Date: June 11th, 2025

What’s New
1. Improved calibration experience
2. Bug fixes
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Version: 2.0.5
Release Media: Via QuantumENGINE
Release Date: April 4th, 2025

What’s New
1. Improved ’QuantumENGINE window always getting maximized’ issue.
2. Fixed ’mic always occupied’ issue.
3. Fixed bugs in our EQ presets.
4. Fixed battery indicator issues
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Version: 2.0.2
Release Media: Via QuantumENGINE
Release Date: January 25th, 2025

What’s New
1. Improved positional sound and immersion
2. Powerful game centric design for EQ
3. Streamlined and intuitive user interface
4. AI-powered game centric design for microphone
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Version: 1.19.0.2025
Release Media: Via QuantumENGINE
Release Date: June 20, 2024

What’s New
1. Add support for Quantum 50C & Quantum 360 Wireless
2. Add max volume indicator for Quantum Stream Wireless
3. UI improvements for better user experience
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Version: 1.17.0.1950
Release Media: Via QuantumENGINE
Release Date: November 21, 2023

What’s New
1. Add product support for Quantum Stream Talk
2. Add EQ store feature for Quantum 350 & Quantum 360 P/ X
3. Firmware update stability improvement for Quantum 810
4. UI improvements for better user experience
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Version: 1.6.0.1053
Release Media: Via QuantumENGINE
Release Date: January 21, 2021

What’s New
1. Add welcome feature
2. Add surround mode feature
3. ANC/TT toggle has been implemented
4. Sidetone setting has been turned off by default
5. QuantumSURROUND/QuantumSPHERE quality and performance improvement
6. Quantum 300 mic gain improvement
7. Quantum 800 firmware update stability improvement
8. Bugs fixed
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JBL QuantumENGINE Features

You can adjust Equalizer, Spatial Sound, RGB LED effects, change microphone settings and update the headset's firmware

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JBL Quantum ONE and Quantum TWS: How do I clean my headset?

You can clean it by wiping it gently with a damp cloth. Take extra care not to let water leak into the speaker chamber, as it will damage the speaker drivers.

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