Introduction
Congratulations on your purchase! This manual includes information on the JBL QUANTUM400 gaming headset. We encourage you to take a few minutes to read this manual, which describes the product and includes step-by-step instructions to help you to set up and get started. Read and understand all the safety instructions before using your product.
If you have any questions about this product or its operation, please contact your retailer or customer service, or visit us at www.JBLQuantum.com
What's in the Box
Illustration showing the contents of the JBL Quantum 400 headset box: 1. The JBL Quantum 400 headset. 2. A USB cable (USB-A to USB-C). 3. A 3.5mm audio cable. 4. A bundle of documents including the Quick Start Guide (QSG), warranty card, and safety sheet. 5. A foam windshield for the boom microphone.
- 01 JBL QUANTUM400 headset
- 02 USB cable (USB-A to USB-C)
- 03 3.5mm audio cable
- 04 QSG, warranty card and safety sheet
- 05 Windshield foam for boom microphone
Product Overview
Controls on Headset
Diagram of the JBL Quantum 400 headset with numbered controls: 1. Chat/Game volume dial. 2. Master volume dial (+/-). 3. Attachment point for detachable windshield foam. 4. LED indicator for microphone mute status. 5. RGB-lit JBL logo. 6. 3.5mm audio jack. 7. Voice focus boom microphone. 8. Ear cup designed for flat folding. 9. Microphone mute button. 10. USB-C port.
- 01 ?️ Chat/Game volume dial: Balances the chat volume in relation to the game audio volume.
- 02 ? Volume +/- dial: Adjusts headset volume.
- 03 Detachable windshield foam
- 04 ? Mic mute / unmute LED: Lights up when the microphone is muted.
- 05 ✨ RGB-lit JBL logo
- 06 3.5mm audio jack
- 07 ? Voice focus boom microphone: Flip up to mute, or flip down to unmute the microphone.
- 08 Flat-fold ear cup
- 09 ?️ Mute button: Press to mute or unmute the microphone. Hold for more than 5 seconds to turn the RGB light on or off.
- 10 USB-C port
Getting Started
Wearing Your Headset
Illustration showing how to wear the JBL Quantum 400 headset. It depicts a head with the headset positioned, indicating adjustable earpads and headband for a comfortable fit. The boom microphone is shown extended. A small icon illustrates microphone mute status: ❌ [muted], ✔️ [unmuted].
- Put the side marked L onto your left ear and the side marked R onto your right ear.
- Adjust the earpads and headband for a comfortable fit.
- Adjust the microphone as necessary.
First-time Setup (for PC only)
Download JBL QuantumENGINE from jblquantum.com/engine to gain full access to features on your JBL Quantum headset - from headset calibration to adjusting 3D audio to suit your hearing, from creating customized RGB lighting effects to determining how the boom microphone side-tone works.
Software Requirements
Platform: Windows 7 / Windows 10 (64 bit) only
500MB of free hard drive space for installation
TIP:
- QuantumSURROUND and DTS Headphone:X V2.0 available on Windows only. Software installation required.
- Connect the headset to your PC via USB connection (See "With USB connection").
- Go to "Sound Settings" -> "Sound Control Panel".
- Under "Playback” highlight "JBL QUANTUM400 GAME" and select "Set Default" -> "Default Device".
- Highlight "JBL QUANTUM400 CHAT" and select "Set Default" -> "Default Communication Device".
- Under "Recording” highlight “JBL QUANTUM400 CHAT“ and select "Set Default" -> "Default Device".
- Follow the onscreen instructions to personalize your sound settings.
Screenshots of Windows sound settings for the JBL Quantum 400 headset. One window displays 'JBL QUANTUM400 GAME' and the other displays 'JBL QUANTUM400 CHAT', used for setting default audio devices.
Using Your Headset
With USB Connection
Illustration demonstrating the USB connection for the JBL Quantum 400 headset. It shows the USB cable connecting from a USB-A port (labeled with icons for PC, Mac, PS4) to the USB-C port on the headset.
| Controls | Operation |
|---|---|
| Volume dial | Adjust master volume. |
| ?️ | Rotate towards ? to increase game volume. Rotate towards ? to increase chat volume. |
| ?️ Mute button | Press to mute or unmute the microphone. Hold for more than 5 seconds to turn on or off the RGB light. |
TIP:
Depending on your device configuration, you can also use a USB-C to USB-C cable (not supplied). USB-C connectivity with all devices is not guaranteed.
With 3.5mm Audio Connection
Illustration demonstrating the 3.5mm audio connection for the JBL Quantum 400 headset. It shows the 3.5mm audio cable connecting from a device (labeled with icons for PC, Mac, mobile, gaming console) to the 3.5mm audio jack on the headset.
| Controls | Operation |
|---|---|
| Volume dial | Adjust master volume. |
NOTE:
The mic mute / unmute LED, ?️ button and RGB-lit JBL logo on the headset do not work in 3.5mm audio connection.
Product Specifications
- Driver size: 50 mm Dynamic drivers
- Frequency response: 20 Hz - 20 kHz
- Microphone frequency response: 100 Hz - 10 kHz
- Max input power: 30 mW
- Sensitivity: 98 dB SPL @1 kHz / 1 mW
- Microphone sensitivity: -40 dBV @1 kHz / Pa
- Impedance: 32 ohm
- Cable length: 3.5 mm audio cable (1.2 m) + Type-C to Type-A Cable (3 m)
- Microphone pickup pattern: Directional
- Microphone size: 4 mm x 1.5 mm
- Weight: 274 g
NOTE:
Technical specifications are subject to change without prior notice.
Troubleshooting
If you have problems using this product, check the following points before you request service.
No Sound or Poor Sound
- Make sure you have chosen JBL QUANTUM400 GAME as the default device in the game sound settings of your PC, Mac or gaming console device.
- Adjust volume on your PC, Mac or gaming console device.
- Check game chat balance on PC if you are only playing game or chat audio.
In USB connection:
- Make sure the USB cable is connected securely.
- The USB ports on some gaming console devices may be incompatible with JBL QUANTUM400. This is not a malfunction.
In 3.5mm audio connection:
- Make sure the 3.5mm audio cable is connected securely.
My Voice Cannot Be Heard by My Teammates
- Make sure you have chosen JBL QUANTUM400 CHAT as the default device in the chat sound settings of your PC, Mac or gaming console device.
- Make sure the microphone is not muted.
I Can't Hear Myself When I'm Talking
- Enable sidetone via JBL QuantumENGINE to hear yourself clearly over game audio.
