1. Introduction
This manual provides essential instructions for the safe and effective use of your JVC HAS91NB Wireless Noise Cancelling Headphones. Please read this manual thoroughly before using the product and retain it for future reference.
2. Package Contents
Verify that all items are present in the package:
- JVC HAS91NB Wireless Noise Cancelling Headphones
- USB-C Charging Cable
- 3.5mm Audio Cable
- Protective Carrying Pouch
- User Manual (this document)
Image: Included accessories with the JVC HAS91NB headphones.
3. Setup
3.1. Charging the Headphones
Before initial use, fully charge the headphones. Connect the supplied USB-C charging cable to the headphone's charging port and the other end to a USB power adapter (not included) or a computer's USB port. The charging indicator light will show the charging status.
3.2. Powering On/Off
- To Power On: Press and hold the Power button until the indicator light illuminates.
- To Power Off: Press and hold the Power button until the indicator light turns off.
3.3. Bluetooth Pairing
- Ensure the headphones are powered off.
- Press and hold the Power button for approximately 5 seconds until the indicator light flashes rapidly (usually blue and red), indicating pairing mode.
- On your Bluetooth-enabled device (smartphone, tablet, computer), navigate to the Bluetooth settings and enable Bluetooth.
- Select "JVC HAS91NB" from the list of available devices.
- Once connected, the indicator light on the headphones will typically flash slowly or remain solid blue.
If prompted for a passcode, enter "0000".
4. Operating Instructions
Image: Control buttons on the JVC HAS91NB headphones.
4.1. Basic Controls
- Volume Up/Down: Use the dedicated volume buttons (+/-).
- Play/Pause: Press the multi-function button once.
- Next Track: Double-press the multi-function button.
- Previous Track: Triple-press the multi-function button.
- 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 during an incoming call.
4.2. Noise Cancelling (NC) Function
The Active Noise Cancelling feature reduces ambient noise for an immersive listening experience.
- Activate/Deactivate NC: Press the NC button. An indicator light will confirm activation.
Image: Headphones in use, demonstrating noise cancellation for focused listening.
4.3. Ambient Sound Mode
Ambient Sound Mode allows you to hear surrounding sounds while wearing the headphones, enhancing situational awareness.
- Activate/Deactivate Ambient Sound: Press the Ambient Sound button.
Image: Headphones in use, demonstrating ambient sound mode for environmental awareness.
4.4. Voice Assistant Compatibility
These headphones are compatible with voice assistants on your connected device.
- Activate Voice Assistant: Press and hold the multi-function button for approximately 2 seconds.
4.5. Wired Connection
You can use the headphones with the supplied 3.5mm audio cable when the battery is depleted or for devices without Bluetooth connectivity.
- Connect one end of the 3.5mm audio cable to the headphone's audio input jack and the other end to your audio source.
4.6. Foldable Design
The headphones feature a two-way foldable design for compact storage and portability.
Image: The foldable design of the JVC HAS91NB headphones for easy transport.
5. Maintenance
5.1. Cleaning
- Wipe the headphones with a soft, dry cloth.
- Do not use abrasive cleaners, solvents, or chemical agents.
- Avoid getting moisture into any openings.
5.2. Storage
- Store the headphones in the provided protective pouch when not in use.
- Avoid storing in extreme temperatures or high humidity.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Headphones do not power on. | Battery is depleted. | Charge the headphones using the USB-C cable. |
| Cannot pair via Bluetooth. | Headphones not in pairing mode; device Bluetooth off; too far from device. | Ensure headphones are in pairing mode (flashing blue/red). Turn on Bluetooth on your device. Move headphones closer to the device (within 10 meters). |
| No sound or low volume. | Volume too low; headphones not connected; audio source issue. | Increase volume on headphones and connected device. Re-establish Bluetooth connection or check wired connection. Verify audio source is playing. |
| Noise cancelling not effective. | NC function not activated; improper fit. | Press the NC button to activate. Adjust headphones for a proper seal around your ears. |
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | HAS91NB |
| Noise Control | Active Noise Cancellation |
| Connectivity | Bluetooth 5.0, 3.5 mm Jack |
| Bluetooth Range | Up to 10 meters (33 feet) |
| Audio Driver Size | 40 mm Dynamic Driver |
| Impedance | 32 Ohms |
| Battery Life | Up to 42 hours (Bluetooth only), 37 hours (Bluetooth + NC) |
| Charging Port | USB-C |
| Weight | Approximately 13 ounces |
| Material | Plastic (housing), Fabric (carrying case) |
| Water Resistance | Not Water Resistant |
| Special Features | Fast Charging, Microphone Included, Voice Assistant Compatible, Foldable Design |
8. Safety Information
- Do not expose the headphones to extreme temperatures, direct sunlight, or high humidity.
- Avoid listening at high volume levels for extended periods to prevent hearing damage.
- Do not use the headphones while driving, cycling, or in situations where you need to hear surrounding sounds for safety, unless using Ambient Sound Mode appropriately.
- Keep out of reach of children.
- Do not attempt to disassemble or modify the headphones. This will void the warranty.
9. Warranty and Support
JVC products are designed for reliability and performance. For warranty information, please refer to the warranty card included with your product or visit the official JVC website. For technical support or service inquiries, please contact JVC customer service through their official channels.
You can find more information and support resources on the JVC Store on Amazon.
