1. Product Overview
The Philips B8405 Soundbar with Wireless Subwoofer delivers a powerful 2.1 channel audio experience. Featuring Dolby Atmos for immersive 3D sound and DTS Play-Fi compatibility for multi-room audio, this soundbar enhances your home entertainment. It supports various connectivity options including Bluetooth, Wi-Fi, HDMI eARC, and optical input, and can be controlled via remote or voice assistants.

Image 1.1: Philips B8405 Soundbar and Wireless Subwoofer.

Image 1.2: The soundbar features a distinctive geometric design for easy placement.
2. Setup
2.1 Unpacking and Contents
Carefully remove all components from the packaging. The box should contain:
- Philips B8405 Soundbar
- Wireless Subwoofer
- Remote control (with battery)
- Power cord
- Wall mount bracket
- Quick start guide
- World Wide Warranty leaflet
2.2 Placement
The soundbar can be placed on a table, discreetly under your TV, or mounted on the wall using the included brackets. Ensure the wireless subwoofer is placed in a location that allows for optimal bass distribution and wireless connection to the soundbar.
2.3 Connections
Connect the soundbar to your TV or other audio sources using one of the following methods:
- HDMI eARC: For the best audio quality and control, connect an HDMI cable from the soundbar's HDMI eARC port to your TV's HDMI ARC/eARC port. This allows for advanced audio formats like Dolby Atmos and TV remote control of the soundbar volume.
- Optical Input: Connect an optical cable from the soundbar to your TV's optical audio output. Note that optical connections have limitations compared to HDMI eARC.
- AUX: Use an AUX cable for analog audio connections.

Image 2.1: Rear view of the soundbar illustrating various connectivity options including Bluetooth, Wi-Fi, AUX, and HDMI.
2.4 Wireless Subwoofer Pairing
The wireless subwoofer should automatically pair with the soundbar upon powering on both devices. If pairing does not occur automatically, refer to the quick start guide for manual pairing instructions.
2.5 Play-Fi Setup
For multi-room audio or to create a true surround sound system with additional Play-Fi speakers, download the DTS Play-Fi app on your mobile device. Follow the in-app instructions to sync and group your devices.
Video 2.1: Detailed setup instructions for Philips Play-Fi functionality.
3. Operating Instructions
3.1 Power On/Off
Press the power button on the soundbar or the remote control to turn the device on or off.
3.2 Input Selection
Use the 'Source' button on the remote control to cycle through available input sources (HDMI, Optical, AUX, Bluetooth, Wi-Fi).
3.3 Volume Control
Adjust the volume using the '+' and '-' buttons on the remote control. If connected via HDMI eARC, your TV remote may also control the soundbar volume.
3.4 Sound Modes
The soundbar features various sound modes to optimize your listening experience:
- Dolby Atmos: Provides a three-dimensional, immersive sound experience, projecting sound from all directions.
- Stadium EQ Mode: Recreates the atmosphere of a live sports stadium, enhancing crowd intensity while maintaining clear commentary.
- Custom Settings: Adjust frequencies and subwoofer levels for personalized audio.

Image 3.1: The soundbar and subwoofer create a three-dimensional sound experience, compatible with Play-Fi and Dolby Atmos.
3.5 Wireless Streaming
Stream high-quality music wirelessly from your mobile devices:
- Bluetooth: Pair your device via Bluetooth for direct audio streaming.
- Wi-Fi: Utilize Spotify Connect, Chromecast, or Apple AirPlay 2 for streaming over Wi-Fi.
- DTS Play-Fi: Sync with other Play-Fi compatible devices for multi-room audio or surround sound.
Video 3.1: Demonstration of Philips B8405 soundbar with Play-Fi multiroom audio capabilities.

Image 3.2: The soundbar supports Play-Fi for multi-room audio and connects with voice assistant-enabled devices.
3.6 Voice Assistant Integration
Connect the soundbar with Amazon Echo devices or any speaker that works with Google Assistant. iPhone users can also stream music via Apple AirPlay 2. This allows for hands-free control of music playback and other functions.

Image 3.3: Enjoy hands-free control of your entertainment with voice commands.
4. Maintenance
4.1 Cleaning
To clean the soundbar and subwoofer, use a soft, dry cloth. Do not use liquid cleaners, abrasive materials, or solvents, as these can damage the finish. Ensure the device is powered off and unplugged before cleaning.
4.2 Storage
When not in use for extended periods, store the soundbar and subwoofer in a cool, dry place, away from direct sunlight and extreme temperatures. It is recommended to keep the original packaging for storage or transport.
5. Troubleshooting
If you encounter issues with your Philips B8405 Soundbar, refer to the following common solutions:
- No Sound:
- Ensure the soundbar is powered on and the correct input source is selected.
- Check all cable connections (HDMI, Optical, AUX) are secure.
- Verify the TV's audio output settings are configured to send audio to the soundbar.
- Increase the volume on both the soundbar and the TV.
- Subwoofer Not Connecting:
- Ensure the subwoofer is powered on and within range of the soundbar.
- If automatic pairing fails, consult the quick start guide for manual pairing instructions.
- Connectivity Issues (Bluetooth/Wi-Fi):
- Restart the soundbar and your mobile device.
- Ensure your device is within range and there are no obstructions interfering with the signal.
- For Wi-Fi, check your router and internet connection.
- Ensure the Play-Fi app is updated to the latest version.
- Automatic Shutdown After 15 Minutes:
- This model may have an automatic power-off feature after 15 minutes of inactivity. This feature cannot be disabled. If this causes issues with continuous video playback without sound, consider alternative audio routing or ensure audio is consistently playing.
- Volume Control Behavior:
- If volume changes are too drastic per button press, this is a characteristic of the device. Adjust volume incrementally or use custom sound settings to fine-tune audio output.
6. Specifications

Image 6.1: Product dimensions for the Philips B8405 Soundbar and Wireless Subwoofer.
| Feature | Specification |
|---|---|
| Brand | PHILIPS |
| Model Number | B8405 |
| Speaker Maximum Output Power | 240 watts |
| Audio Output Mode | Surround |
| Speaker Type | Soundbar, Subwoofer |
| Number of Audio Channels | 2.1 |
| Connectivity Technology | Bluetooth, Wi-Fi |
| Wireless Technology | Airplay, Bluetooth |
| Additional Features | Connects with voice assistants, DTS Play-Fi compatible, Dolby Atmos® |
| Control Method | Remote Control, Voice Control |
| Item Dimensions (D x W x H) | 16.8"D x 40.6"W x 6"H |
| Item Weight | 9.3 kg |
| Color | Black |
| Power Source | Corded Electric |
7. Warranty Information
This Philips B8405 Soundbar comes with a 1-year manufacturer's warranty. Please refer to the 'World Wide Warranty leaflet' included in your product packaging for detailed terms and conditions, including coverage, limitations, and how to make a claim. Keep your proof of purchase for warranty service.
8. Support
For further assistance, technical support, or service inquiries, please:
- Visit the official Philips support website for your region.
- Consult the comprehensive user manual available for download on the Philips website.
- Contact Philips customer service directly using the contact information provided in your warranty leaflet or on their website.