Sennheiser MOMENTUM 4 Wireless Headphones with BTD 700 Bluetooth USB Dongle User Manual

1. Introduction

The Sennheiser MOMENTUM 4 Wireless Headphones, paired with the BTD 700 Bluetooth USB Dongle, offer a premium audio experience with advanced features. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal performance and longevity of your device.

The MOMENTUM 4 Wireless headphones deliver best-in-class sound quality, adaptive noise cancellation, and extended battery life. The BTD 700 dongle enhances connectivity, providing stable, high-resolution audio with low latency, making it suitable for various applications including music, calls, gaming, and video streaming.

2. What's in the Box

Upon unboxing your Sennheiser MOMENTUM 4 Wireless Headphones + BTD 700 Bluetooth USB Dongle, you should find the following components:

• Sennheiser MOMENTUM 4 Wireless Headphones (White)
• Sennheiser BTD 700 Bluetooth USB Dongle (USB-C and USB-A compatible)
• Charging Cable (USB-C)
• Audio Cable (3.5mm)
• Carrying Case
• Quick Guide and Safety Instructions

Image: Sennheiser MOMENTUM 4 Wireless Headphones and BTD 700 Bluetooth USB Dongle. The headphones are white with grey earcups and headband padding. The dongle is shown in both USB-C and USB-A formats.

3. Setup

3.1 Initial Charging

Before first use, fully charge your MOMENTUM 4 Wireless Headphones. Connect the supplied USB-C charging cable to the headphone's charging port and to a USB power source. The LED indicator will show charging status.

3.2 Pairing with BTD 700 Bluetooth USB Dongle

1. Plug the BTD 700 Bluetooth USB Dongle into a compatible USB-C or USB-A port on your computer or device. The dongle is plug-and-play and does not require driver installation.
2. Ensure your MOMENTUM 4 headphones are in pairing mode. Typically, this involves pressing and holding the power button until the LED flashes a specific color (refer to the headphone's quick guide for exact instructions).
3. The dongle and headphones will automatically pair. A successful connection is usually indicated by a steady LED light on both devices.
4. Once paired, your computer or device should recognize the Sennheiser MOMENTUM 4 as an audio output and input device.

Note: The BTD 700 dongle supports aptX Adaptive and aptX Lossless codecs for high-resolution audio and low latency.

3.3 Pairing with Other Bluetooth Devices

To pair your MOMENTUM 4 headphones with a smartphone or other Bluetooth-enabled device:

1. Put the headphones into pairing mode.
2. On your device, go to Bluetooth settings and select "Sennheiser MOMENTUM 4" from the list of available devices.
3. Confirm pairing if prompted.

3.4 Sennheiser Smart Control App

Download the Sennheiser Smart Control App on your smartphone to personalize your listening experience. The app allows you to:

• Adjust the equalizer and sound modes.
• Customize touch controls.
• Manage active noise cancellation and transparency mode settings.
• Update headphone firmware.

4. Operating Your Headphones

4.1 Power On/Off

Press and hold the power button for approximately 2 seconds to power the headphones on or off.

4.2 Audio Playback and Calls

The MOMENTUM 4 headphones feature intuitive touch controls on the right earcup for managing audio and calls:

• Play/Pause: Single tap.
• Next Track: Swipe forward.
• Previous Track: Swipe backward.
• Volume Up: Swipe up.
• Volume Down: Swipe down.
• Answer/End Call: Single tap.
• Reject Call: Double tap.

Note: Specific gestures can be customized via the Sennheiser Smart Control App.

4.3 Adaptive Noise Cancellation (ANC) and Transparency Mode

The headphones feature adaptive noise cancellation to block out ambient sounds and a transparency mode to allow you to hear your surroundings without removing the headphones. These modes can be toggled or adjusted via the touch controls or the Smart Control App.

4.4 Multi-Device Connectivity

The MOMENTUM 4 headphones can connect to multiple devices simultaneously. They intelligently switch between devices based on active audio playback, ensuring seamless transitions between your phone and computer.

4.5 Auracast Multistreaming (with BTD 700)

When using the BTD 700 dongle, you can utilize Auracast multistreaming to broadcast audio to multiple compatible headphones or speakers simultaneously. This feature allows shared listening experiences.

5. Maintenance

5.1 Cleaning

• Gently wipe the earcups and headband with a soft, dry, lint-free cloth.
• Do not use liquid cleaners, solvents, or abrasive materials.
• Avoid getting moisture into any openings.

5.2 Storage

When not in use, store your headphones in the provided carrying case to protect them from dust, scratches, and impacts. Store in a cool, dry place away from direct sunlight and extreme temperatures.

5.3 Battery Care

To prolong battery life, avoid fully discharging the headphones frequently. If storing for an extended period, charge the battery to approximately 50% before storage.

6. Troubleshooting

6.1 No Sound or Intermittent Audio

• Check Connection: Ensure the headphones are properly paired with your device or the BTD 700 dongle. Re-pair if necessary.
• Device Output: Verify that the correct audio output device (Sennheiser MOMENTUM 4) is selected on your computer or smartphone.
• Dongle Connection: If using the BTD 700, ensure it is securely plugged into the USB port. Try a different USB port if issues persist.
• Interference: Move away from other wireless devices or sources of electromagnetic interference.
• Restart: Power the headphones off and on again. Restart your connected device.

6.2 Low Volume

• Headphone Volume: Increase the volume using the touch controls on the earcup.
• Device Volume: Increase the volume on your connected device.
• App Settings: Check the Sennheiser Smart Control App for any volume limits or equalizer settings that might be affecting output.

6.3 Pairing Issues

• Pairing Mode: Ensure headphones are in pairing mode (LED flashing).
• Device Bluetooth: Turn Bluetooth off and on again on your device.
• Forget Device: On your device, "forget" or "unpair" the headphones and attempt to pair again.
• Dongle Reset: If using the BTD 700, unplug and replug it.

6.4 Unstable Connection with Laptop

Some users have reported occasional stuttering or unstable connections when paired with certain laptops. If this occurs:

• Ensure your laptop's Bluetooth drivers are up to date.
• Try using the BTD 700 USB Dongle for a more stable and optimized connection, especially if your laptop's built-in Bluetooth is older or prone to issues.
• Minimize other Bluetooth devices connected to the laptop simultaneously.

7. Specifications

8. Warranty and Support

Sennheiser products are designed for durability and performance. For information regarding warranty coverage, please refer to the warranty card included with your product or visit the official Sennheiser website.

For technical support, troubleshooting assistance beyond this manual, or service inquiries, please contact Sennheiser customer support through their official website or authorized service centers. Keep your proof of purchase for warranty claims.

Online Resources:

• Sennheiser Support Website
• Sennheiser Amazon Store