Introduction
This user manual provides comprehensive instructions for setting up, operating, and maintaining your Sonos Arc Ultra soundbar, Sonos Sub 4 subwoofer, and Sonos Era 100 Speakers (Pair). Please read this manual carefully before using your system to ensure optimal performance and safety.

Image: The complete Sonos home theater system, including the Sonos Arc Ultra soundbar, Sonos Sub 4 subwoofer, and two Sonos Era 100 speakers, all in black finish.
Safety Information
Always follow basic safety precautions when using this product to reduce the risk of fire, electric shock, or injury. Keep these instructions for future reference.
- Do not expose the product to dripping or splashing liquids.
- Do not place objects filled with liquids, such as vases, on the product.
- Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
- Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
- Only use attachments/accessories specified by the manufacturer.
- Unplug this apparatus during lightning storms or when unused for long periods of time.
Setup Guide
1. Unpacking and Placement
Carefully remove all components from their packaging. Ensure all parts are present: Sonos Arc Ultra soundbar, Sonos Sub 4 subwoofer, and two Sonos Era 100 speakers.
- Sonos Arc Ultra: Place the soundbar horizontally below your TV. Ensure it has clear line of sight to your listening area for optimal Dolby Atmos performance.
- Sonos Sub 4: The Sub 4 can be placed anywhere in the room, even under your sofa, as it connects wirelessly. It can be oriented vertically or horizontally.
- Sonos Era 100 Speakers: Position the Era 100 speakers behind your main listening area, ideally equidistant from the listener and from each other, to create an immersive surround sound experience.

Image: The Sonos Sub 4 subwoofer positioned upright next to a sofa, highlighting its flexible placement options and wireless connectivity.

Image: An example living room setup showing the Sonos Arc soundbar under the TV, the Sub 4 subwoofer, and two rear speakers (Era 100s in this system) for a complete surround sound experience.
2. Connecting to Power and TV
- Connect the power cable to each Sonos component (Arc Ultra, Sub 4, Era 100s) and plug them into a power outlet.
- Connect the Sonos Arc Ultra to your TV's HDMI eARC/ARC port using the provided HDMI cable.

Image: A user interacting with the Sonos app on a smartphone, illustrating the ease of setup and configuration.
3. Sonos App Setup
- Download the Sonos app from your device's app store (iOS or Android).
- Open the Sonos app and follow the on-screen instructions to set up your new system. The app will guide you through connecting to your Wi-Fi network and adding each speaker.
- The app will also assist in syncing your TV remote for streamlined control of the Arc Ultra.
Operating Your Sonos System
Audio Experience
- Dolby Atmos: The Arc Ultra provides an immersive spatial audio soundstage with lateral and overhead channels, enhancing movies and music.
- Deep Bass with Sub 4: The Sub 4 handles the lowest frequencies, allowing the Arc Ultra and Era 100s to deliver clearer midrange and high frequencies.
- Trueplay Tuning: Use the Sonos app (iOS devices only) to utilize Trueplay tuning technology. This feature analyzes your room's acoustics and optimizes the EQ for the best sound.

Image: A visual representation of Trueplay tuning, showing how sound is optimized to fit the unique acoustics of a room.
Control Methods
Your Sonos system offers multiple ways to control your audio playback:
- Sonos App: The primary control interface for streaming music, adjusting settings, and managing your system.
- Touch Controls: Each Sonos component has integrated touch controls for basic functions like play/pause, volume, and track skipping.
- Voice Control: Utilize Sonos Voice Control or Amazon Alexa for hands-free operation.
- Apple AirPlay 2: Stream audio directly from Apple devices.
- TV Remote: Control the Arc Ultra's volume using your existing TV remote after initial setup.

Image: An illustration detailing the diverse control options available for the Sonos system, including the Sonos App, touch controls, voice assistants, and AirPlay 2.
Streaming Services
Access a wide range of music, podcasts, and audiobooks from your favorite services over Wi-Fi using the Sonos app. The system also supports Apple AirPlay 2 for direct streaming from compatible devices.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the surfaces of your Sonos components. Do not use abrasive cleaners or solvents.
- Software Updates: Ensure your Sonos app and speakers are updated to the latest software version for optimal performance and new features. Updates are managed through the Sonos app.
- Ventilation: Ensure proper ventilation around all components. Do not block any vents.
Troubleshooting
Common Issues and Solutions
| Issue | Possible Cause | Solution |
|---|---|---|
| No sound from Arc Ultra | Incorrect HDMI connection, TV audio settings, power issue. | Ensure HDMI cable is securely connected to TV's eARC/ARC port. Check TV audio output settings (PCM, Passthrough, or Auto). Verify Arc Ultra is powered on. |
| Sub 4 or Era 100s not connecting | Wi-Fi interference, distance from router, setup error. | Restart your router and Sonos components. Ensure speakers are within Wi-Fi range. Re-add speakers through the Sonos app. |
| Voice control not responding | Microphone muted, internet connectivity, voice assistant setup incomplete. | Check if the microphone is enabled on the speaker. Verify internet connection. Reconfigure voice assistant in the Sonos app. |
| Audio dropouts or lag | Network congestion, Wi-Fi interference. | Reduce network traffic. Move speakers closer to the router or consider a Sonos Boost for a dedicated SonosNet. |
For more detailed troubleshooting, refer to the Sonos support website or the Sonos app's help section.
Specifications
| Feature | Detail |
|---|---|
| Brand | Sonos |
| Model | Arc Ultra, Sub 4, Era 100 Speakers (Pair) |
| Connectivity Technology | Wi-Fi |
| Audio Output Mode | Dolby Atmos |
| Control Method | App, Remote, Voice |
| Color | Black |
| Date First Available | October 15, 2024 |
Warranty and Support
Warranty Type: Full
For warranty claims, technical support, or further assistance, please visit the official Sonos support website or contact Sonos customer service. Keep your proof of purchase for warranty validation.
Sonos Support: www.sonos.com/support







