Vizio SB3651-E6 Manual: Comprehensive Guide
This comprehensive guide details the Vizio SmartCast SB3651-E6 5.1 system, covering setup, operation, troubleshooting, and safety precautions.
It includes information from quick start guides, manuals, and user resources.
The Vizio SB3651-E6 is a 5.1-channel wireless sound bar system designed to deliver immersive, true surround sound at an accessible price point. This SmartCast enabled system streamlines home audio, offering a significant upgrade over standard television speakers.
This manual provides a detailed walkthrough of the SB3651-E6, from initial unboxing and setup to advanced customization of sound settings. It covers both wired (Optical, AUX) and wireless (Bluetooth) connectivity options for seamless integration with your TV and other devices.
Users will find guidance on remote control operation, troubleshooting common issues like sound output problems and Bluetooth pairing difficulties, and essential safety information. The system includes a sound bar, wireless subwoofer, and two satellite speakers, all working in harmony to create a dynamic audio experience. This guide aims to empower users to fully utilize the features of their Vizio SB3651-E6.
Unboxing and Package Contents
Upon unboxing your Vizio SB3651-E6 5.1 system, carefully inspect the contents to ensure all components are present and undamaged. The package should include the main SmartCast sound bar unit, a wireless subwoofer for deep bass, and two satellite speakers to create a true surround sound experience.
Additionally, you’ll find the XRS551-D remote control for convenient operation, along with the necessary power cables for the sound bar and subwoofer. A quick start guide is included to assist with initial setup, though this comprehensive manual provides more detailed instructions.
Locate the included documentation, including safety instructions and warranty information. Verify the presence of the S/N label for future reference. If any items are missing or appear damaged, contact Vizio customer support immediately for assistance. Proper inventory ensures a smooth setup process.
System Overview: Components & Features
The Vizio SB3651-E6 is a 5.1-channel wireless sound bar system designed to deliver immersive audio. The system comprises a central sound bar, a dedicated wireless subwoofer, and two rear satellite speakers, creating a true surround sound environment. It features Vizio’s SmartCast technology, enabling seamless integration with compatible smart home ecosystems.
Key features include Dolby Digital decoding for enhanced audio quality and Bluetooth connectivity for wireless music streaming from your smartphone or tablet. The system supports both optical and AUX inputs for wired connections to your TV.
The included remote allows for easy control of volume, sound modes, and other settings. This streamlined design offers powerful sound in a compact footprint, providing a significant upgrade over standard TV speakers. It’s a cost-effective solution for a cinematic home theater experience.

Setting Up Your Vizio SB3651-E6
Proper setup is crucial for optimal performance. This section guides you through initial placement, wired and wireless connections, and system synchronization for the best audio experience.
Initial Placement of Sound Bar, Subwoofer & Satellites
Strategic placement enhances the 5.1 surround sound experience. Position the sound bar centrally, facing the TV, ensuring it isn’t obstructed. The wireless subwoofer should be placed for optimal bass response – experiment with locations, avoiding corners initially, as this can sometimes overemphasize bass.
Satellite speakers are key to immersive audio. Place them to the sides and slightly behind the listening position, creating a wider soundstage. Ensure all speakers are on stable surfaces. Avoid placing components near direct heat sources or in areas with high humidity.
Consider cable management for a clean setup. Proper speaker positioning significantly impacts the overall sound quality, so take time to find the ideal arrangement for your room.
Connecting to Your TV: Wired Options (Optical, AUX)
For a stable connection, utilize the optical (Toslink) or AUX (3.5mm) ports. Optical is preferred for superior audio quality and supports Dolby Digital Plus. Connect one end of an optical cable to the TV’s optical output and the other to the sound bar’s optical input. Select “Optical” as the audio output on your TV.
If your TV lacks an optical output, use the AUX cable. Connect one end to the TV’s headphone or audio-out jack and the other to the sound bar’s AUX input. Choose “AUX” as the audio output on your TV.
Ensure cables are securely connected. Wired connections generally offer lower latency than wireless options. Remember to adjust TV audio settings to disable internal speakers after connecting the sound bar.
Connecting to Your TV: Wireless Options (Bluetooth)

Pairing via Bluetooth offers a convenient, cable-free connection. First, put the Vizio SB3651-E6 sound bar into Bluetooth pairing mode – typically by pressing and holding the Bluetooth button on the remote. On your TV, navigate to the Bluetooth settings menu and initiate a device search.
Select “SB3651-E6” from the list of available devices. You may be prompted for a pairing code; if so, enter “0000”. Once connected, your TV’s audio will route wirelessly to the sound bar.
Bluetooth range is limited, so ensure the sound bar remains within close proximity to the TV. Note that Bluetooth may introduce slight audio latency. If experiencing issues, try re-pairing the devices or consider a wired connection for optimal performance.
Powering On and Initial System Synchronization
To begin, connect the power cables to the sound bar and subwoofer. The sound bar typically powers on automatically when connected to power, but you may need to press the power button on the unit or remote. The subwoofer and satellite speakers should synchronize wirelessly with the sound bar.
If synchronization doesn’t occur automatically, press the “Subwoofer” button on the remote. The sound bar will then search for and connect to the subwoofer. Allow a few moments for the process to complete; a successful connection is usually indicated by a solid blue light on the subwoofer.
Ensure all components are within range for optimal wireless communication. If issues persist, consult the troubleshooting section of this manual for further assistance.

Remote Control Operation
The XRS551-D remote controls all SB3651-E6 functions, including power, volume, input selection, and sound settings. Battery replacement is occasionally needed for optimal performance.
Remote Control Layout and Button Functions
The Vizio SB3651-E6 remote features a straightforward layout designed for intuitive control of your sound system. The power button, prominently located, turns the entire system on or off. Volume up and down buttons adjust the overall sound level, while the mute button silences the audio completely.
Input selection buttons allow you to switch between connected devices, such as your TV via Optical or AUX, or a Bluetooth enabled source. Dedicated sound mode buttons cycle through preset equalizer settings like Movie, Music, and Direct. The menu button accesses the on-screen display for advanced settings customization.
Navigation buttons (up, down, left, right) and an OK button are used to navigate the menu. A back button returns to the previous menu screen. Finally, the subwoofer level button allows for independent adjustment of the subwoofer’s volume, ensuring balanced bass output. Understanding these functions unlocks the full potential of your Vizio soundbar.
Replacing the Remote Control Batteries
Maintaining your Vizio SB3651-E6 remote’s functionality requires periodic battery replacement. When the remote becomes unresponsive or exhibits reduced range, it’s time for fresh batteries. Gently slide the battery cover away from the remote control – avoid excessive force. Typically, the remote requires two AAA batteries, though always verify the correct type indicated inside the battery compartment.
Insert the new batteries, ensuring correct polarity (+ and -) as marked. Incorrect insertion can damage the remote and void any warranty. Once the batteries are securely in place, carefully slide the battery cover back onto the remote until it clicks into position.

VIZIO recommends using quality alkaline batteries for optimal performance and longevity. Dispose of used batteries responsibly, following local regulations for battery recycling. A fresh set of batteries will restore full control of your sound system.
Remote Control Pairing and Troubleshooting
If your Vizio SB3651-E6 remote isn’t responding, pairing may be necessary or troubleshooting required. Initially, ensure the remote has fresh batteries and is within a reasonable range of the sound bar. For initial pairing, consult the system’s setup instructions – some models pair automatically, while others require a manual process involving specific button combinations.
If pairing fails, try resetting both the remote and the sound bar. Unplug the sound bar for 60 seconds, then plug it back in. Simultaneously, remove the batteries from the remote for 15 seconds, then reinsert them. Attempt pairing again.
Obstructions between the remote and sound bar can also cause issues. Ensure a clear line of sight. If problems persist, consult the Vizio support website for further assistance or consider contacting customer service.

Sound Settings and Customization
Customize your audio experience with Vizio’s SB3651-E6, adjusting volume, equalizer settings, and sound modes. Explore the 5.1 channel surround sound configuration options for optimal listening.
Adjusting Volume Levels
Controlling the volume on your Vizio SB3651-E6 sound bar is straightforward, offering multiple methods for convenient adjustment. You can utilize the physical volume buttons located directly on the sound bar itself, providing immediate control. Alternatively, the included remote control features dedicated volume up and down buttons for effortless adjustments from across the room.
Furthermore, many modern TVs support HDMI-CEC (Consumer Electronics Control), allowing you to control the sound bar’s volume using your TV’s remote. Ensure HDMI-CEC is enabled in both your TV and sound bar settings for this functionality.
Pay attention to the volume level indicators displayed on the sound bar’s front panel. Avoid excessively high volumes to prevent distortion and potential hearing damage. Experiment with different volume settings to find the optimal level for your listening environment and content. The system also features a mute function, accessible via both the sound bar and remote, for instant silence.
Equalizer Settings and Sound Modes
The Vizio SB3651-E6 offers several preset sound modes designed to enhance your listening experience for various content types. These typically include options like ‘Movie’, ‘Music’, ‘Direct’, and ‘Standard’, each optimizing audio frequencies for specific scenarios. Access these modes through the sound bar’s settings menu, navigable via the remote control.
While a fully customizable equalizer isn’t standard, the preset modes provide effective adjustments. ‘Movie’ mode often emphasizes dialogue clarity and dynamic range, while ‘Music’ prioritizes balanced audio for musical enjoyment. ‘Direct’ delivers a more raw, unprocessed sound, and ‘Standard’ offers a balanced default setting.
Experiment with each mode to determine which best suits your preferences and the content you’re enjoying. Consider the room acoustics and speaker placement when selecting a sound mode. Fine-tuning the sound to your liking is key to maximizing the SB3651-E6’s audio performance.
Surround Sound Configuration (5.1 Channel)
The Vizio SB3651-E6 is designed to deliver a true 5.1 channel surround sound experience, utilizing the sound bar, a dedicated subwoofer, and two satellite speakers. Proper placement of these components is crucial for optimal performance. The satellite speakers should be positioned to the sides and slightly behind the listening area, creating a wider soundstage.
Ensure the subwoofer is placed in a location that maximizes bass response, typically along a wall. The system automatically calibrates the speaker levels, but manual adjustments may be necessary based on room acoustics. The sound bar acts as the center channel, anchoring dialogue and front-stage effects.
To verify correct configuration, use test tones available within the sound bar’s settings. Confirm sound is emanating from each speaker, and adjust individual speaker levels as needed to achieve a balanced and immersive surround sound field. Enjoy a cinematic audio experience!

Troubleshooting Common Issues
This section addresses frequent problems with the Vizio SB3651-E6, including no sound, Bluetooth connectivity, subwoofer sync, and remote control malfunctions. Solutions are provided.
No Sound Output Troubleshooting
If you experience no sound with your Vizio SB3651-E6, begin by verifying the power connections to both the sound bar and the subwoofer. Ensure the TV audio output is correctly set to Optical or AUX, matching your connection method. Confirm the optical cable is securely plugged into both the TV and sound bar.
Next, check the sound bar’s volume level and mute status using the remote. Cycle through the sound modes (Movie, Music, Direct) to see if one resolves the issue. If using Bluetooth, disconnect and reconnect the device. Verify the TV’s volume is also turned up and not muted.
For Optical connections, try a different HDMI ARC port on your TV. If problems persist, a power cycle – unplugging the sound bar and TV for 60 seconds – can often resolve the issue. Finally, consult the Vizio support website for further assistance and firmware updates.
Bluetooth Connection Problems
Experiencing Bluetooth connectivity issues with your Vizio SB3651-E6? First, ensure Bluetooth is enabled on both your TV or device and the sound bar. Confirm the sound bar is in pairing mode – typically activated by pressing and holding the Bluetooth button on the remote. Bring the device closer to the sound bar during the initial pairing process.
If pairing fails, try removing the SB3651-E6 from your device’s Bluetooth list and re-initiating the pairing sequence. Check for interference from other wireless devices, which can disrupt the connection. Power cycling both the sound bar and the source device can often resolve temporary glitches.
Ensure only one device is actively connected to the sound bar via Bluetooth at a time. If the connection is unstable, update your device’s operating system. Refer to the Vizio support website for specific troubleshooting steps and firmware updates for optimal Bluetooth performance.
Subwoofer Synchronization Issues
Is your Vizio SB3651-E6 subwoofer failing to connect or experiencing audio delays? Begin by verifying the subwoofer is powered on and within range of the sound bar – ideally within 20 feet with a clear line of sight. Initiate the synchronization process by pressing the subwoofer’s pairing button, usually located on the rear panel.
Simultaneously, on the sound bar, navigate to the settings menu (often through the “System” or “Audio” options) and select “Subwoofer Sync” or a similar function. Allow the system a few moments to establish a connection. If synchronization repeatedly fails, ensure there are no obstructions or sources of interference between the sound bar and subwoofer.
Power cycling both units can often resolve synchronization problems. Check the Vizio support website for specific instructions and potential firmware updates that address subwoofer connectivity issues. A weak subwoofer signal may indicate a power supply problem.
Remote Control Not Working
If your Vizio SB3651-E6 remote isn’t responding, start with the basics: ensure fresh batteries are correctly installed, paying attention to polarity. Gently slide off the battery cover to access the battery compartment. Confirm there’s no obstruction between the remote and the sound bar’s IR sensor.
Attempt to pair the remote, if applicable – consult the manual for specific pairing instructions. If pairing fails, try resetting the sound bar by unplugging it for 60 seconds, then plugging it back in. A malfunctioning remote may require replacement; Vizio offers replacement remotes for purchase.
Check for interference from other devices emitting IR signals. Test the remote’s functionality using a camera phone – if you see a flashing light when pressing buttons, the remote is transmitting. Refer to the troubleshooting section of the Vizio support website for further assistance.

Safety Information and Precautions
Always follow important safety instructions to prevent electrical shock and ensure proper operation. Do not open the device, and heed all warnings printed on the unit.
Important Safety Instructions
Read and keep these safety instructions for future reference. To reduce the risk of fire, electrical shock, or injury, follow these guidelines. Do not use the sound bar near water or expose it to excessive moisture. Ensure adequate ventilation around the unit; do not block ventilation openings.
Avoid placing the sound bar on unstable surfaces, and keep it away from direct sunlight or heat sources. Do not disassemble or modify the sound bar; refer servicing to qualified personnel. Use only the specified power supply and ensure the voltage is correct.
Unplug the sound bar during lightning storms or prolonged periods of non-use. Clean the sound bar with a soft, dry cloth; do not use abrasive cleaners. Be cautious of power cord damage, and replace it immediately if necessary. Follow all warnings and precautions printed on the device itself.
Cleaning and Maintenance

To ensure optimal performance and longevity, regular cleaning and maintenance are recommended for your Vizio SB3651-E6. Always unplug the sound bar and all its components – subwoofer and satellites – from the power outlet before cleaning. Use a soft, dry cloth to gently wipe the exterior surfaces of the sound bar, subwoofer, and satellites.
Avoid using liquid cleaners, abrasive detergents, or solvents, as these can damage the finish. For stubborn stains, lightly dampen the cloth with water and wipe gently, then dry immediately. Do not attempt to clean the speaker drivers directly; simply dust around them carefully.
Periodically check the power cords for damage and replace them if necessary. Ensure the ventilation openings are free from dust and debris. Store the sound bar in a cool, dry place when not in use, protected from direct sunlight and extreme temperatures.

Technical Specifications
The Vizio SB3651-E6 is a 5.1 channel wireless sound bar system designed for immersive audio. Sound Bar dimensions are approximately 40.2″ (W) x 2.8″ (H) x 2.8″ (D), while the Subwoofer measures around 8.3″ (W) x 12.9″ (H) x 8.3″ (D). Satellite speakers are roughly 7.7″ (H) x 4.5″ (W) x 3.5″ (D).
Total System Power is 1000 Watts (peak), delivering robust sound. Connectivity options include HDMI ARC, Optical Audio Input, and Bluetooth. The system supports Dolby Digital and DTS decoding for enhanced audio quality. Frequency Response is 50Hz – 20kHz.
The sound bar features built-in Vizio SmartCast for seamless streaming. Power consumption varies depending on usage. Weight of the sound bar is approximately 6.6 lbs, subwoofer 13.2 lbs, and satellites 2.2 lbs each. Model Number: SB3651-E6.