Introduction
This manual provides essential information for the setup, operation, and maintenance of your VIZIO S3820W-C0 38-inch 2.0 Home Theater Sound Bar. This sound bar is designed to enhance your television's audio with clear sound and integrated deep bass, offering a superior listening experience for movies, music, and more.
Safety Information
- Read all instructions before operating the sound bar.
- Keep the sound bar away from heat sources, direct sunlight, and moisture.
- Do not block any ventilation openings.
- Use only attachments/accessories specified by the manufacturer.
- Unplug the sound bar during lightning storms or when unused for long periods.
- Refer all servicing to qualified service personnel.
Package Contents
Please check to ensure all items are present:
- VIZIO S3820W-C0 38-inch 2.0 Home Theater Sound Bar
- Remote Control (requires 2 AAA batteries, included)
- Power Cable
- Optical Audio Cable
- RCA to 3.5mm Audio Cable
- Wall Mount Brackets and Template (if included)
Controls and Connections
Sound Bar Controls
The sound bar features integrated controls, typically located on the top or side, for basic functions such as Power, Input, Volume Up, and Volume Down.
Rear Panel Connections

This image displays the rear panel of the VIZIO S3820W-C0 sound bar, highlighting the available input ports for connecting to your television or other audio sources. These typically include Optical (Digital In), Digital Coaxial, and Analog (RCA or 3.5mm Aux In) inputs.
- Optical (Digital In): For connecting to your TV's optical audio output. Provides high-quality digital audio.
- Digital Coaxial: Another digital audio input option for compatible devices.
- Analog (AUX In): For connecting devices using RCA or 3.5mm stereo cables.
- USB: For firmware updates only. Not for audio playback.
- Power Input: Connect the included power cable here.
Remote Control

The remote control provides full functionality for your sound bar, including power, input selection, volume control, bass/treble adjustments, and sound mode selection. Ensure the included AAA batteries are correctly inserted.
Setup
Placement
Place the sound bar centrally below your TV. Ensure it is on a stable, flat surface or securely wall-mounted. For optimal sound, avoid placing objects directly in front of the sound bar's speakers.

This image shows the slim profile of the VIZIO S3820W-C0 sound bar, illustrating how it can be discreetly placed in front of a television without obstructing the screen.
Connecting to Your TV
- Optical Connection (Recommended):
a. Connect one end of the Optical Audio Cable to the OPTICAL (DIGITAL IN) port on the sound bar.
b. Connect the other end to the Optical Digital Audio Out port on your TV.
c. On your TV's audio settings, select 'External Speakers' or 'Optical Out' and ensure the audio format is set to 'PCM' or 'Stereo' if you experience no sound. - RCA / 3.5mm AUX Connection:
a. Connect the RCA to 3.5mm Audio Cable to the AUX IN ports on the sound bar.
b. Connect the 3.5mm end to your TV's 3.5mm Audio Out (headphone) jack, or the RCA ends to your TV's RCA Audio Out ports (red and white).
Power Connection
- Connect the power cable to the POWER port on the sound bar.
- Plug the other end of the power cable into a working electrical outlet.
Operating Instructions
Power On/Off
Press the Power button on the sound bar or the remote control to turn the unit on or off.
Volume Control
Use the Volume Up (+) and Volume Down (-) buttons on the sound bar or remote to adjust the volume level.
Input Selection
Press the Input button on the sound bar or remote to cycle through available audio inputs (Optical, Coaxial, AUX, Bluetooth).
Bluetooth Pairing
To stream audio wirelessly from a Bluetooth-enabled device:
- Press the Bluetooth button on the remote or the Input button on the sound bar until the Bluetooth input is selected. The Bluetooth indicator light on the sound bar will begin to flash.
- Enable Bluetooth on your mobile device (smartphone, tablet, etc.) and search for new devices.
- Select "VIZIO S3820W-C0" from the list of available devices.
- Once paired, the Bluetooth indicator light on the sound bar will stop flashing and glow solid. You can now play audio from your device through the sound bar.
Audio Enhancements
- Dolby Digital Decoding: The sound bar supports Dolby Digital, providing a true cinematic audio experience with rich, clear sound.
- DTS TruSurround: This technology creates a virtual surround sound experience from stereo content, enhancing immersion without additional speakers.
- DTS TruVolume: Helps to maintain a consistent volume level, preventing sudden increases in loudness during commercials or scene changes.
- Bass Boost: Use the remote control to adjust the bass level to your preference for deeper low-frequency response.
Mounting Options
The VIZIO S3820W-C0 sound bar can be placed on a flat surface or wall-mounted. If wall-mounting, use the included wall mount brackets and template. Ensure the wall can support the weight of the sound bar and follow all instructions carefully to prevent damage or injury.

This image provides the physical dimensions of the VIZIO S3820W-C0 sound bar, which are 38 inches in width, 3.7 inches in height, and 2.9 inches in depth. These measurements are crucial for planning placement or wall mounting.
Troubleshooting
No Power
- Ensure the power cable is securely connected to both the sound bar and a working electrical outlet.
- Check if the outlet is receiving power by plugging in another device.
No Sound
- Verify the correct input is selected on the sound bar (e.g., Optical, AUX, Bluetooth).
- Check the volume level on both the sound bar and your TV.
- If using an optical connection, ensure your TV's audio output is set to 'PCM' or 'Stereo'.
- Ensure audio cables are securely connected.
Bluetooth Connection Issues
- Ensure the sound bar is in Bluetooth pairing mode (flashing indicator light).
- Move your Bluetooth device closer to the sound bar (within 10 meters).
- Try unpairing and re-pairing the device.
- Ensure no other Bluetooth devices are actively connected to the sound bar.
Specifications
- Model Number: S3820W-C0
- Channels: 2.0 Stereo with Integrated Deep Bass Modules
- Sound Pressure Level (SPL): 98 dB
- Total Harmonic Distortion: Less than 1%
- Speaker Maximum Output Power: 200 Watts
- Connectivity: Bluetooth, Optical Digital, Digital Coaxial, Analog (RCA/3.5mm)
- Bluetooth Range: Up to 10 meters (33 feet)
- Dimensions (W x H x D): 38.0" x 3.7" x 2.9"
- Weight: 5.2 Pounds
- Power Source: Corded Electric
- Included Accessories: Remote control, power cable, optical cable, RCA to 3.5mm cable, wall mount hardware.
Care and Maintenance
- To clean the sound bar, unplug it from the power outlet.
- Use a soft, dry cloth to wipe the surfaces.
- Do not use liquid cleaners or aerosol sprays.
- Avoid exposing the sound bar to extreme temperatures or humidity.
Warranty and Support
Your VIZIO S3820W-C0 Sound Bar is covered by a limited warranty. For specific warranty terms, duration, and conditions, please refer to the warranty card included with your product or visit the official VIZIO website. For technical support, product registration, or to access additional resources, please visit www.vizio.com/support or contact VIZIO customer service directly.