Sennheiser D 10 USB ML Wireless DECT Headset User Manual

1. Introduction

The Sennheiser D 10 USB ML is a single-sided wireless DECT headset designed for professionals requiring direct softphone connection. It offers a natural listening experience with wideband sound and features a noise-cancelling microphone for clear speech. Digital Signal Processing (DSP) enhances audio clarity by reducing echo and equalizing sound. This headset is certified for Skype for Business and provides wireless freedom within an office environment.

2. What's in the Box

Verify that all components are present in the package:

• Headset
• Base station
• USB cable
• Headband (detachable)
• 1 bendable ear hook (mounted on headset)
• Printed Quick guide
• Printed Safety guide

Image 1: Sennheiser D 10 USB ML Headset and Base Station. The image displays the black headset with a silver headband and a black charging base station. The headset is docked on the base station.

3. Setup Instructions

1. Connect the Base Station: Plug the provided USB cable into the base station and connect the other end to an available USB port on your PC. The base station will power on automatically.
2. Charge the Headset: Place the headset onto the magnetic charging interface of the base station. Ensure it is securely seated. The status indicators on the base station will show the charging progress. A full charge takes approximately 40 minutes, with a fast charge providing up to 50% in 20 minutes.
3. Initial Pairing: The headset and base station are typically pre-paired. If re-pairing is necessary, refer to the Quick Guide for specific instructions.
4. Software Recognition: Your PC should automatically recognize the D 10 USB ML as an audio device. For Skype for Business, ensure it is selected as the default communication device in your software settings.

4. Wearing Styles

The D 10 USB ML headset offers three wearing styles for user comfort and preference:

• Headband: Attach the headset to the provided headband for a traditional over-the-head fit.
• Ear Hook: Use the bendable ear hook for an on-ear wearing style. This is pre-mounted on the headset.
• Neckband: A neckband option is available (may require separate purchase) for an alternative fit.

Adjust the microphone boom for optimal voice pickup, positioning it approximately two finger-widths from your mouth.

5. Operating Instructions

5.1. Call Management

• Answering/Ending Calls: Use the dedicated call control button on the headset or your softphone application.
• Volume Control: Adjust the listening volume using the controls on the headset.
• Mute Function: Press the mute button on the headset to temporarily disable your microphone. Note that some software configurations may produce an audible beep when muted.

5.2. Wireless Range

The DECT wireless technology provides a range of up to 180 meters (590 feet) with line of sight. In a typical office environment, the effective range is approximately 55 meters (180 feet). This allows for mobility during calls.

5.3. Conferencing

Up to four D 10 headsets can be paired to a single base station for conference calls. This feature simplifies multi-user communication from a shared base.

6. Battery and Charging

The headset is equipped with a Lithium Polymer battery. It provides up to 12 hours of talk time on a full charge. Charging is performed by placing the headset on its base station. A full charge takes approximately 40 minutes, with a fast charge providing up to 50% battery in just 20 minutes.

Status indicators on the base station show the available talk time and charging status.

7. Maintenance

• Cleaning: Use a soft, dry cloth to clean the headset and base station. Avoid using liquid cleaners or solvents.
• Storage: When not in use, store the headset on its charging base to ensure it is always ready for use and to prolong battery life.
• Battery Care: While the headset has a robust battery, extreme temperatures can affect its lifespan. Store and operate within recommended temperature ranges.

8. Troubleshooting

• No Sound/Poor Sound Quality:
  • Ensure the USB cable is securely connected to both the base station and your PC.
  • Verify that the headset is properly seated on the base station and charged.
  • Check your PC's audio settings to confirm the Sennheiser D 10 USB ML is selected as the default playback and recording device.
  • Restart your softphone application or PC.
• Mute Beep: Some users may experience an incessant beeping sound when the headset is muted. This is often a software-related notification. Check your softphone application's settings for options to disable mute notifications. If using proprietary software, consult the software's documentation or support.
• Headset Not Pairing: If the headset does not connect to the base station, try re-pairing according to the instructions in the Quick Guide. Ensure no other DECT devices are causing interference.
• Limited Wireless Range: Ensure there are no major obstructions (e.g., thick walls, large metal objects) between the headset and the base station. Reduce potential interference from other wireless devices.

9. Specifications

10. Safety Information

The Sennheiser D 10 USB ML incorporates ActiveGard Technology. This patented feature provides hearing protection against acoustic shock, safeguarding your ears from sudden loud sound bursts during calls.

Always follow general safety guidelines for electronic devices. Avoid exposing the device to extreme temperatures, moisture, or direct sunlight.

11. Warranty and Support

Sennheiser offers a 2-year warranty on all headsets, including the battery. For warranty claims or technical support, please refer to the contact information provided in your product's Quick Guide or visit the official Sennheiser support website.

For additional resources, you may visit the Sennheiser Store.