Welcome to the VIZIO SB3821-C6 Sound Bar user guide. This manual provides detailed instructions for setting up and operating your sound bar, ensuring optimal performance and enhanced audio experience for your home entertainment.

Features
The VIZIO SB3821-C6 Sound Bar offers a wireless subwoofer, 2.1 channel system, and built-in Bluetooth for enhanced connectivity. It delivers premium audio quality with deep bass and crystal-clear sound, featuring a sleek, modern design.
2.1 Key Features

The VIZIO SB3821-C6 Sound Bar is designed to elevate your home audio experience with its robust set of features. It includes a wireless subwoofer for deep, immersive bass and a 2.1 channel system that ensures balanced and clear sound. The sound bar supports Bluetooth connectivity, allowing seamless pairing with smartphones, tablets, and other devices. Additionally, it features optical and auxiliary input options, providing flexibility for connecting various audio sources. The sleek and compact design makes it easy to integrate into any living space without compromising on style. With its intuitive remote control, you can effortlessly adjust volume, switch inputs, and customize sound settings. The SB3821-C6 also offers Dolby Digital decoding, enhancing your audio experience with rich, cinematic sound. These features collectively make the VIZIO SB3821-C6 a versatile and high-performance sound bar for everyday use.
2.2 Design and Build
The VIZIO SB3821-C6 Sound Bar boasts a sleek and modern design, crafted to complement any home decor. Its compact dimensions (38 inches wide, 2.1 inches tall, and 3.1 inches deep) allow for easy placement under or alongside your TV. The sound bar is constructed with high-quality materials, ensuring durability while maintaining a lightweight profile. The wireless subwoofer, measuring 7.9 inches tall and 8.1 inches wide, is designed to blend seamlessly into your living space. Both components feature a premium finish, offering a sophisticated look. The sound bar’s grille is made of sturdy metal, protecting the internal speakers while maintaining acoustic clarity. The remote control is ergonomically designed for easy navigation, with intuitive buttons for volume control, input selection, and sound customization. The overall build emphasizes both functionality and aesthetics, making the SB3821-C6 a stylish addition to your entertainment system. Its compact design ensures minimal space occupation without compromising on performance.

2.3 Technical Specifications
The VIZIO SB3821-C6 Sound Bar is equipped with advanced features to deliver high-quality audio. It supports 2.1-channel surround sound, with a total power output of 100 watts. The sound bar measures 38 inches in width, 2.1 inches in height, and 3.1 inches in depth, making it a perfect fit for most TVs. The wireless subwoofer, measuring 7.9 inches tall and 8.1 inches wide, adds deep bass to enhance your listening experience. The system supports Bluetooth connectivity, allowing seamless pairing with smartphones, tablets, and other devices. It also features multiple input options, including HDMI, optical, and auxiliary inputs, ensuring compatibility with various audio sources. The sound bar operates at a frequency response of 50 Hz to 20 kHz, providing clear and balanced sound across the audio spectrum. With a weight of 4.5 pounds for the sound bar and 8.5 pounds for the subwoofer, the system is both portable and powerful. For detailed specifications, refer to the user manual.
Installation and Setup
Unbox and place the sound bar and subwoofer in your desired location. Connect the subwoofer wirelessly and link external devices via HDMI, optical, or auxiliary inputs for seamless audio integration. Refer to the manual for detailed setup instructions.
3.1 Unboxing
Begin by carefully unboxing the VIZIO SB3821-C6 sound bar system. Inside the box, you will find the sound bar, wireless subwoofer, remote control, power cord, and an optical cable. Additionally, there may be a quick start guide and warranty information. Inspect all components for any visible damage. If you notice any issues, contact VIZIO customer support immediately. Place the sound bar on a flat, stable surface, ensuring it is positioned for optimal audio dispersion. The wireless subwoofer should be placed in a corner or against a wall to enhance bass performance. Keep the remote control handy for easy operation. Before proceeding with setup, ensure all cables are securely connected to their respective ports. If you have any questions about the contents or condition of your system, refer to the user manual or contact VIZIO support for assistance.
3.2 Placement Tips
Proper placement of the VIZIO SB3821-C6 sound bar and wireless subwoofer is crucial for achieving optimal audio performance. Position the sound bar centrally under your TV, ensuring it is level and stable. Avoid placing it in enclosed spaces, as this may muffle the sound. For the wireless subwoofer, place it in a corner or against a wall to enhance bass response. Keep the subwoofer at least 6 inches away from any walls to prevent resonance issues. Ensure the sound bar is not blocked by furniture or obstructions, as this can disrupt the sound field. If placing the sound bar on a shelf, ensure it is secure and vibration-free. Experiment with different positions to find the setup that delivers the best audio quality for your room. Always refer to the user manual for specific placement recommendations tailored to your system.
3.3 Connecting the Wireless Subwoofer
To connect the wireless subwoofer to your VIZIO SB3821-C6 sound bar, follow these steps. First, ensure both the sound bar and subwoofer are powered off. Unbox the subwoofer and place it in your desired location. Plug in the power cord to both the sound bar and subwoofer, then turn them on. The subwoofer should automatically pair with the sound bar within a few minutes. If pairing does not occur automatically, press and hold the Volume Down button on the sound bar and the Pair button on the subwoofer simultaneously for 3-5 seconds. Once connected, you will hear a confirmation tone. Ensure the subwoofer is placed on a flat surface and away from obstacles for optimal performance. If you encounter any issues, refer to the troubleshooting section of the manual. Proper connection ensures a seamless audio experience with deep bass enhancement.
Operating the Sound Bar
Use the remote control to adjust volume, switch inputs, and access sound modes. Press Volume Up/Down for audio levels and Input to select sources. Customize settings via the Menu button for enhanced listening experiences.
4.1 Using the Remote Control
The remote control for the VIZIO SB3821-C6 sound bar offers intuitive navigation and control over your audio experience. Key buttons include Volume Up/Down for adjusting sound levels, Input to switch between connected devices, and Menu to access settings. Use the Power button to turn the sound bar on or off. The remote also features preset sound modes, such as Movie or Music, which can be selected using dedicated buttons. For optimal performance, ensure the remote has fresh batteries and is pointed directly at the sound bar. If the remote is unresponsive, check for obstructions or interference from other devices. Regularly clean the remote’s surface to maintain functionality. Refer to the Quick Start Guide for additional details on remote control operations and troubleshooting tips to ensure seamless control of your sound bar.
4.2 Adjusting Sound Settings
Customize your audio experience by adjusting the sound settings on the VIZIO SB3821-C6 sound bar. Use the remote control or on-screen menu to access the Equalizer and fine-tune bass, treble, and mid-range levels. Select from preset sound modes like Movie, Music, or Game to enhance your listening experience. Adjust the Bass Volume to balance low-frequency sounds, ensuring optimal performance from the wireless subwoofer. The Dialogue Enhance feature can be enabled to improve vocal clarity in movies and TV shows. For a more immersive experience, enable Surround Sound or Virtual:X technology. Save your custom settings for quick access or reset to default settings if needed. Use the LED Display on the sound bar to monitor adjustments in real time. Experiment with these settings to achieve your preferred audio balance and enjoy a tailored sound experience for every occasion.
4.3 Connecting External Devices

To enhance your audio experience, the VIZIO SB3821-C6 sound bar supports various connection options for external devices. Use the HDMI ports to connect Blu-ray players, gaming consoles, or TVs, ensuring high-quality digital audio transmission. The Optical Input is ideal for connecting older devices without HDMI capability. For wired audio sources, utilize the AUX (3.5mm) or RCA inputs. Additionally, the sound bar features Bluetooth connectivity, allowing you to stream music wirelessly from smartphones, tablets, or laptops. To connect via Bluetooth, press the Bluetooth button on the remote or sound bar until the LED flashes, then pair your device. For HDMI connections, ensure your device is set to output audio via HDMI. Use the remote to select the correct input mode. This versatility ensures seamless integration with your home entertainment system, providing a comprehensive audio solution for all your needs.

Troubleshooting Common Issues

Troubleshoot Common Issues
Troubleshoot common issues with your VIZIO SB3821-C6 sound bar, such as no sound, distorted audio, or connectivity problems. Refer to the manual for solutions like resetting the device or checking connections.
5.1 No Sound or Distorted Audio
If your VIZIO SB3821-C6 sound bar produces no sound or distorted audio, start by checking the volume levels and ensuring the mute function is off. Verify that the correct input is selected on both the sound bar and your connected device. Loose or faulty connections can cause audio issues, so inspect all cables and ensure they are securely plugged in. If using HDMI, check for damage or try a different port. For distorted audio, ensure the sound bar is placed on a stable surface away from obstructions. Resetting the device by unplugging it for 30 seconds may resolve software glitches. If issues persist, refer to the manual for advanced troubleshooting steps or contact customer support for assistance. Proper maintenance and regular updates can help prevent such problems. Always follow the guidelines provided in the user manual for optimal performance.
5.2 Connectivity Problems
If you encounter connectivity issues with your VIZIO SB3821-C6 sound bar, start by ensuring all cables are securely connected to the correct ports. Check for loose connections, damage, or dirt on the cables, as these can disrupt the signal. Restart both the sound bar and the connected device, as this often resolves temporary glitches. If using wireless connectivity, ensure the subwoofer is paired correctly and within range. Interference from other electronic devices can also cause unstable connections. Resetting the sound bar to its factory settings may resolve persistent issues. For detailed steps, refer to the user manual or visit the VIZIO support website. If problems persist, contact customer support for further assistance. Proper connectivity is essential for optimal performance, so addressing these issues promptly will enhance your audio experience.
5.3 Resetting the Sound Bar
Resetting the VIZIO SB3821-C6 sound bar can resolve various software-related issues. To perform a factory reset, press and hold the Volume Down and Bluetooth buttons on the sound bar simultaneously for 10-15 seconds. Release the buttons when the LED indicator flashes red. This process will restore the sound bar to its default settings, erasing all custom configurations. After resetting, the sound bar will automatically restart. Note that you will need to reconnect the wireless subwoofer and reconfigure any custom settings. If the issue persists, ensure the sound bar is updated to the latest firmware. For detailed instructions, refer to the user manual or visit the VIZIO support website. Resetting should be a last resort, as it will erase all personalized settings. Always attempt troubleshooting steps before resetting. If problems continue, contact VIZIO customer support for further assistance.

Maintenance and Care
Regular maintenance ensures optimal performance and longevity of your VIZIO SB3821-C6 sound bar. Clean the exterior with a soft, dry cloth to remove dust and fingerprints. Avoid using harsh chemicals or abrasive materials, as they may damage the finish. For stubborn stains, lightly dampen the cloth with water, but ensure no moisture enters the ports or openings. Check for firmware updates periodically to ensure you have the latest features and improvements. Store the sound bar in a cool, dry place when not in use for extended periods. Avoid exposing it to direct sunlight or extreme temperatures, as this can affect sound quality and component longevity. Properly manage cables to prevent tangles and damage. If the sound bar is not in use for an extended time, unplug it to prevent power degradation. Regularly inspect the wireless subwoofer and sound bar for dust buildup, especially in the speaker grilles. By following these care tips, you can maintain your sound bar’s performance and ensure years of reliable service.
Legal Information
This manual is for informational purposes only and is subject to change without notice. VIZIO reserves the right to modify or update the information contained herein at any time. The information provided is believed to be accurate at the time of publication. However, VIZIO makes no warranty, express or implied, regarding the accuracy or completeness of this information. VIZIO shall not be liable for any damages arising from the use of this manual or the product it describes.
The VIZIO SB3821-C6 sound bar complies with applicable regulations, including FCC Part 15 and CE standards. This device is designed to operate on a 120V AC power supply. Any modifications to the product not authorized by VIZIO may void the warranty and violate regulations.
For environmental protection, properly dispose of the product at the end of its life cycle. Do not dispose of electronic waste in regular household trash. Refer to local e-waste regulations for proper disposal methods. All rights reserved. No part of this manual may be reproduced without written consent from VIZIO.
Conclusion
Thank you for reading the VIZIO SB3821-C6 Sound Bar manual. This guide has provided you with essential information to set up, operate, and maintain your sound bar for an enhanced audio experience. By following the instructions, you can enjoy high-quality sound tailored to your preferences. The SB3821-C6 is designed to be user-friendly, with features like a wireless subwoofer and sleek design to complement your home entertainment system. If you encounter any issues, refer to the troubleshooting section for quick solutions. Proper care and maintenance will ensure your sound bar performs optimally for years to come. For additional support, visit the VIZIO website or download the user manual and quick start guide. We hope this manual has been helpful in maximizing your enjoyment of the SB3821-C6. Happy listening!

Additional Resources
For further assistance, download the SB3821-C6 User Manual and Quick Start Guide in PDF format from the official VIZIO website. These resources provide detailed instructions and troubleshooting tips for optimal performance.
9.1 Downloading the User Manual

To access the VIZIO SB3821-C6 user manual, visit the official VIZIO website. Navigate to the support section and search for your sound bar model. Click on the SB3821-C6 to view available resources. Select the PDF User Manual or Quick Start Guide to download. Ensure you have Adobe Acrobat or a compatible PDF reader installed to open the file. Save the manual for future reference or print it for convenience. The manual includes detailed setup instructions, troubleshooting tips, and technical specifications. Refer to it for guidance on connecting devices, adjusting settings, and resolving common issues. This resource is essential for maximizing your sound bar’s performance and addressing any operational questions you may have.
9.2 Quick Start Guide
The Quick Start Guide for the VIZIO SB3821-C6 provides a concise overview to help you quickly set up and begin using your sound bar. Start by carefully unboxing the unit, ensuring all components, including the sound bar, wireless subwoofer, remote control, and power cables, are included. Place the sound bar near your TV, ideally at ear level, and position the subwoofer in a corner for optimal bass performance. Connect the sound bar to your TV using an HDMI or optical cable, depending on your preference. Power on the sound bar and subwoofer, ensuring they pair automatically. Use the remote control to adjust volume, select input sources, and customize sound settings. For more detailed instructions, refer to the full user manual. This guide is designed to get you up and running quickly, allowing you to enjoy enhanced audio quality right away.