Vizio M51a-H6 User manual

USER MANUAL
Model: M51a-H6
VIZIO 5.1 Sound Bar with Dolby Atmos®
Please read this guide before using the product.

ENG - 2 ENG - 3
IMPORTANT SAFETY INSTRUCTIONS IMPORTANT SAFETY INSTRUCTIONS
Your Unit is designed and manufactured to operate within dened design limits, and misuse may result in electric shock or re. To prevent your Unit from being damaged,
the following rules should be observed for its installation, use, and maintenance. Please read the following safety instructions before operating your Unit. Keep these
instructions in a safe place for future reference.
• Read these instructions.
• Keep these instructions.
• Heed all warnings.
• Follow all instructions.
• Do not use this apparatus near water.
• Clean only with a dry cloth.
• 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 ampliers) that produce heat.
• Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has
two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not t into your outlet, consult an
electrician for replacement of the obsolete outlet.
• 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 specied by the manufacturer.
• Use only with the cart, stand, tripod, bracket, or table specied by the manufacturer, or sold with the apparatus. When a cart is used, use caution when
moving the cart/apparatus combination to avoid injury from tip-over.
• Unplug this apparatus during lightning storms or when unused for long periods of time.
• Refer all servicing to qualied service personnel. Servicing is required when the apparatus has been damaged in any way, such as when the power supply cord or plug is
damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been
dropped.
• To reduce the risk of electric shock or component damage, switch o the power before connecting other components to your Unit.
• Unplug the power cord before cleaning your Unit. A damp cloth is sucient for cleaning. Do not use a liquid or a spray cleaner on your Unit. Do not use abrasive
cleaners.
• Always use the accessories recommended by the manufacturer to insure compatibility.
• When moving your Unit from an area of low temperature to an area of high temperature, condensation may form in the housing. Wait before turning on your Unit to
avoid causing re, electric shock, or component damage.
• Slots and openings in the back and bottom of the cabinet are provided for ventilation. To ensure reliable operation of your Unit and to protect it from overheating, be
sure these openings are not blocked or covered. Do not place your Unit in a bookcase or cabinet unless proper ventilation is provided.
• Never push any object into the slots and openings on your Unit enclosure. Do not place any objects on the top of your Unit. Doing so could short circuit parts causing a
re or electric shock. Never spill liquids on your Unit.
• Do not block the subwoofer ports. Allow for 1-2 inches of space around all sides for ventilation.
• WARNING: Exposure to loud sounds can damage your hearing causing hearing loss and tinnitus (ringing or buzzing in the ears). With continued exposure to loud
noises, ears may become accustomed to the sound level, which may result in permanent damage to hearing without any noticeable discomfort.
• When connected to a power outlet, power is always owing into your Unit. To totally disconnect power, unplug the power cord.
• Do not overload power strips and extension cords. Overloading can result in re or electric shock.
• The wall socket should be located near your Unit and be easily accessible
• Keep your Unit away from moisture. Do not expose your Unit to rain or moisture. If water penetrates into your Unit, unplug the power cord and contact your dealer.
Continuous use in this case may result in re or electric shock.
• Do not use your Unit if any abnormality occurs. If any smoke or odor becomes apparent, unplug the power cord and contact your dealer immediately. Do not try to
repair your unit yourself.
• Avoid using dropped or damaged appliances. If your Unit is dropped and the housing is damaged, the internal components may function abnormally. Unplug the power
cord immediately and contact your dealer for repair. Continued use of your Unit may cause re or electric shock.
• Do not install your Unit in an area with heavy dust or high humidity. Operating your Unit in environments with heavy dust or high humidity may cause re or electric
shock.
• Ensure that the power cord and any other cables are unplugged before moving your Unit.
• When unplugging your Unit, hold the power plug, not the cord. Pulling on the power cord may damage the wires inside the cord and cause re or electric shock. When
your Unit will not be used for an extended period of time, unplug the power cord.
• To reduce risk of electric shock, do not touch the connector with wet hands.
• Insert the remote control batteries in accordance with instructions. Incorrect polarity may cause the battery to leak which can damage the remote control or injure the
operator.
• See the important note and rating located on the back of the unit.
• WARNING: This equipment is not waterproof. To prevent a re or shock hazard, do not place any container lled with liquid near the equipment (such as a vase or
ower pot) or expose it to dripping, splashing, rain, or moisture.
• CAUTION: Danger of explosion or re if batteries are mistreated. Replace only with the same or specied type.
• Do not leave the batteries exposed to direct sunlight for a long period of time with doors and windows closed. Do not disassemble the batteries or dispose of it in re.
• Where the MAINS plug or appliance coupler is used as the disconnect device, the disconnect device shall remain readily operable.
• No naked ame sources,such as lighted candles,should be placed on the apparatus.
• The ventilation should not be impeded by covering the ventilation openings with items,such as newspapers, table-cloths, curtains, etc.
• The equipment shall be used at maximum 35 degree C ambient temperature.
WARNING: To reduce the risk of re or electric shock, do not expose this apparatus to rain or moisture.
CAUTION
RISK OF ELECTRIC
SHOCK DO NOT OPEN
The lighting ash with arrowhead symbol
within an equilateral triangle is intended
to alert the user to the presence of not
isolated dangerous voltage within the
product that may be sucient magnitude
to constitute a risk of shock to persons.
The exclamation point within an
equilateral triangle is intended to alert
the user to the presence of important
operating and servicing instructions in the
literature accompanying the appliance.
Warning: This equipment is a Class II or
double insulated electrical appliance. It
has been designed in such a way that it
does not require a safety connection to
electrical earth.

ENG - 4 ENG - 5
TABLE OF CONTENTS Package Contents
4 x Wall
Mount Screws
Digital Optical
Cable
2 x Power Cables
VIZIO
Sound Bar
Remote Control
with 2x AAA Batteries
2 x Surround
Speakers
Stereo RCA to
3.5mm Audio Cable
3.5mm to 3.5mm
Audio Cable
2 x Surround Speaker
Audio Cables
HDMI Cable
4 x Cable
Ties
Wall Mount Template
Optical
Standard
RCA
RCA To 3
5mm
HDMI
Satellite
Cable
Optical
Standard
RCA
RCA To 3
5mm
HDMI
Satellite
Cable
2 x Wall
Mount Brackets
(Surround Speakers)
Wireless Subwoofer
User Manual Quick Start
Guide
Package Contents......................................................................................................................................5
Controls & Connections ............................................................................................................................6
First-time Setup.........................................................................................................................................10
Using the Remote ......................................................................................................................................16
Proper Placement ......................................................................................................................................17
Mode & Level Settings...............................................................................................................................19
Using Button Combinations......................................................................................................................23
Programming the Sound Bar ....................................................................................................................24
Bluetooth Pairing.......................................................................................................................................25
Using Bluetooth Mode...............................................................................................................................26
Connecting to a Voice Assistant ..............................................................................................................27
Advanced Setup.........................................................................................................................................29
Connecting with HDMI ARC ......................................................................................................................30
Connecting a Subwoofer...........................................................................................................................32
Wall-mounting............................................................................................................................................33
Register Your Product................................................................................................................................36
Customer Service ......................................................................................................................................37
Help & Troubleshooting.............................................................................................................................38
Limited Warranty .......................................................................................................................................39
Legal & Compliance ...................................................................................................................................42
Specications ............................................................................................................................................43
2 x Wall
Mount Brackets
(Sound Bar)
Scan the QR code for an easy setup,
or visit the link below to access information on how
to connect to your other devices.
vizio.com/QR/M51a-H6
More questions?
Contact our VIZIO
Customer Service team:
Phone:
[phone]
Text Message:
[phone]
(Message and data rates may apply. U.S. only.)
Website:
support.vizio.com
Quick Setup Guide
Connect.
Place subwoofer and surround speakers
in the rear of the room.
• Plug in power cables to power on your
sound bar and subwoofer.
• Use the included cables to connect the
surround speakers to the subwoofer.
1
2
HDMI OUT
(eARC)
HOMETHEATERDISPLAY|QUICKSTARTGUIDE
InstallationGuide|Models:
HDMI (ARC or eARC)
• Then use the included HDMI
cable to connect to your TV.
3

ENG - 6 ENG - 7
Controls & Connections Controls & Connections
Back of Sound Bar
**Supports .WAV and .MP3 le format playback only. *Only use this port to connect a Voice Assistant device. See Connecting to a Voice Assistant on page 27 for more information.
AUX VA*
Analog Audio In
(Stereo 3.5mm)
Power Port AUX In
Analog Audio In
(Stereo 3.5mm)
USB** In
Digital Optical
Audio In
HDMI In
HDMI Out (eARC)
to TV

ENG - 8 ENG - 9
Controls & ConnectionsControls & Connections
Top of Sound Bar Back of Subwoofer
AC IN ON / OFF Surrounds
LR
Surround Speaker Ports
Connects to surround speakers
Left: blue cable / Right: grey cable
Power Port
LED Indicator
Power Button
Back of Surround Speaker
Surround Speaker Port
Connects to subwoofer
Volume
Increase or decrease the
loudness of the audio.
Bluetooth Input
Hold to pair.
(See ‘Bluetooth Pairing’ for more information.)
Input
Press to change the audio source.
Power
Press to turn on or o.

ENG - 10 ENG - 11
First-time Setup
1Choose the best possible connection cable type and connect it to your TV.*
3.5mm to
RCA cable
GOOD
OROR
BETTER
Digital Optical
Cable**
BEST
HDMI ARC
Cable
First-time Setup
HOME THEATER DISPLAY | QUICK START GUIDE
Installation Guide | Models:
Be sure the TV port is an audio
output, not an audio input.
Back of Sound Bar
**Some TVs do not pass through digital audio:
When using the digital input, if there is no audio, try:
• setting the TV output to PCM, or
• connecting directly to your Blu-ray or other source.
*Not all TVs have the audio outputs shown.
To connect the sound bar directly to your other devices
(Blu-ray player, game system, etc.) see your device’s user manual.
Do not use HDMI In for rst-time setup.
See “Advanced Setup” on page 30 to
connect other devices to your sound bar.

ENG - 12 ENG - 13
2Connect the power cable to the sound bar AC IN as shown.
Plug the power cable into an electrical outlet.
Connect the surround speakers to the subwoofer using the included surround speaker
audio cables. Cable ties are included to wrap unused cable length.
3
Match the color-coded speaker cable to the matching speaker port color.
Blue for left surround and grey is for right surround.
First-time Setup First-time Setup
HOME THEATER DISPLAY | QUICK START GUIDE
Installation Guide | Models:
Back of Sound Bar
AC IN ON / OFF Surrounds
LR

ENG - 14 ENG - 15
7Remove the battery cover by gently
sliding it away from the remote. 8Insert the included batteries and gently slide the battery cover back into place.
9After turning on both your TV and sound bar, it will automatically begin searching for an active input.*
The LED indicator on the front of the sound bar will begin cycling in different colors through inputs
until an audio source is detected.**
You can press the INPUT button to switch between audio sources.
For example, if you connected your TV to HDMI (ARC), set the
sound bar to HDMI-ARC.
To p To p
Input Power
*Occurs only during rst-time set up.
**Auto detect function only occurs once when the sound bar is rst powered on. To enable this feature
again, you must do a Factory Reset (see the Using Button Combinations on page 23 for more
information) or press and hold the INPUT button for 3 seconds.
When needed, VIZIO recommends replacing the batteries that came with
this remote with two, new Duracell ‘AAA’ alkaline batteries.
HOME THEATER DISPLAY | QUICK START GUIDE
Installation Guide | Models:
5
Plug the power cable into a
power outlet.
Connect the power cable to
the subwoofer.
AC IN ON / OFF
Surrounds
LR
4
The subwoofer should
automatically power on and
link to the sound bar when
plugged in. The LED will glow
to solid to confirm.
AC IN ON / OFF
Surrounds
LR
6
First-time Setup First-time Setup
Tip: Pressing the INPUT button will stop the auto
detect function.
Back of Subwoofer
AC IN ON / OFF Surrounds
LR

ENG - 16 ENG - 17
Proper PlacementUsing the Remote
Volume +/-
Increase and decrease volume
Setup Settings
Change setup settings
Eect Settings
Change audio eect settings
Previous
Return to previous track.
(Changes audio settings in menu)
Mute
Mute/unmute.
(Long press to turn LED power indicator on/o)
Power
Turn on or o
OK
Select an option, play or pause.
(Long press for info)
Next
Skip to the next track.
(Changes audio settings in Menu)
Display
Displays Sound Bar Settings
Input
Change the input source.*
(Long press for Auto Input Search.)
Bluetooth
Press to go to Bluetooth Mode
(Long press for Pairing Mode)
Up/Down
Cycle through settings and options
EQ Settings
Change equalizer settings
Level Settings
Change audio leveling settings
For the best surround sound experience, position the sound bar, subwoofer, and surround sound
speakers as shown. The sound bar should be close to ear level.
Note: Do not block the subwoofer port.
Sound bar should be centered below the TV.
Subwoofer
Left surround
speaker
Right surround
speaker
*Press INPUT then Previous to select previous input.
Specic inputs will show a dierent LED color:
• AUX In: Green
• AUX VA: Violet
• Digital Optical: Red
• HDMI (eARC): Magenta
• HDMI In: Yellow
• Bluetooth: Blue
• USB: Orange

ENG - 18 ENG - 19
Mode & Level Settings
Press each setting button and use the Up/Down buttons to access the
different settings. Each setting will be displayed on the remote control’s
LCD display. The LED indicators will behave differently with each function. LED Indicators are located here.
Function LED Behavior Description
Equalizer Mode Press the EQ button and use the Up/Down buttons to toggle between preset equalizer
settings: Movie, Music, Direct, and Game.
Note: Movie mode is on by default.
Bass Level Two center LEDs
indicate bass level 0.
LEVEL > Bass > Use the Next/Previous buttons to increase/decrease the bass level.
The LED indicators will move to the top with increasing level and to the bottom with
decreasing level.
Treble Level Two center LEDs
indicate treble level 0.
LEVEL > Treble > Use the Next/Previous buttons to increase/decrease the treble level.
The LED indicators will move to the top with increasing level and to the bottom with
decreasing level.
Dialogue Level LED at the bottom
indicates dialogue
level 0.
LEVEL > Dialogue > Use the Next/Previous buttons to increase/decrease the dialogue
level. The LED indicators will move to the top with increasing level and to the bottom with
decreasing level.
Center Level Two center LEDs
indicate center level 0.
LEVEL > Center > Use the Next/Previous buttons to increase/decrease the presence
of dialog in the center channel. The LED indicators will move to the top when the dialogue
presence is increased and to the bottom when the dialog presence is decreased.
Subwoofer Level Two center LEDs
indicate subwoofer
level is 0.
LEVEL > Subwoofer > Use the Next/Previous buttons to increase/decrease the level
of the subwoofer. The LED indicators will move to the top with increasing level and to the
bottom with decreasing level.
Note: Decreasing the level to the minimum turns o the subwoofer.
EQ
Bass
Center
Subwoofer
Treble
Dialogue
Direct
Game
Music
Movie
Proper Placement—Front Surround Mode
In rooms where ideal placement of the surround sound speakers is not practical, you can also place the sound
bar, subwoofer, and surround sound speakers as shown below. Front Surround Mode will utilize DTS Virtual:X to
produce a virtual surround sound experience.
To use this placement, please refer to the Surround Sound mode setting on page 22.
Sound bar should be centered below the TV.
Note: Do not block the subwoofer port.
Subwoofer
Left surround
speaker
Right surround
speaker

ENG - 20 ENG - 21
Mode & Level Settings Mode & Level Settings
Function LED Behavior Description
Program Remote
Learn
Waiting to learn:
Flash from bottom
to top and back
continuously.
SETUP > PrgRemote > Use the Next/Previous buttons and OK button to toggle and
select and program your TV remote to control the Volume Down, Volume Up, and Mute
functions on your sound bar. See the Programing the Sound Bar on page 24 section for
more information.
Power LED
Power LED On
SETUP > PwrLED > Use the Next/Previous buttons and OK button to enable/disable the
Power LED.
Power LED O
AV Delay
LED at the
bottom indicates
no delay.
SETUP > AV Delay > Use the Next/Previous buttons to increase/decrease the amount of
audio delay. The LED indicators will move to the top with increasing audio delay level.
Reset Audio or
Reset All
All LEDs will ash
3 times when
settings are reset.
SETUP > Reset Audio or Reset All > Use the Next/Previous buttons to reset either Audio
or All settings. Press the OK button to select.
Audio - Only audio settings, such as bass and treble levels, will be reset.
All - All paired Bluetooth devices will be unpaired and all settings will be lost. All
programmed IR remotes will also be removed. See the Factory Reset on page 23 for
more information.
Speaker Test
—
SETUP > Spkr Test > OK to activate the speaker test function. A voice will begin calling out
each speaker beginning with left front (Left Front, Center, Right Front, Right Rear, Left Rear,
and subwoofer-white noise). If any of these are missing, check the connection and run the
speaker test function again.
PwrLED
AV Delay
Reset All
Prg Remote
Spkr Test
Function LED Behavior Description
Surround Level Two center LEDs indicate
surround level 0.
LEVEL > Surr Lvl > Use the Next/Previous buttons to increase/decrease the surround
sound level. The LED indicators will move to the top with increasing level and to the bottom
with decreasing level.
Note: Surround must be ON to adjust the surround level.
Surround Balance Two center LEDs indicate
surround balance is
centered.
LEVEL > Surr Bal > Use the Next/Previous buttons to increase/decrease the surround
balance level on each side. The LED indicators will move to the top with balance levels to the
right and down with balance levels to the left.
Info —SETUP > Info > OK to have the sound bar verbally announce the current sound bar input
and audio type being played with corresponding LED indicators.
Auto VA
SETUP > Auto VA > Use the Next/Previous buttons to toggle between connecting the
sound bar to a Voice Assistant through both, Bluetooth (BT), AUX or o. Refer to Connecting
to a Voice Assistant on page 27 for more information.
Note: Default setting is Both.
Eco Power Mode
Eco Power Mode
On
SETUP > EcoPwr > Use the Next/Previous buttons to enable/disable Eco Power Mode.
When ON, the sound bar will go into standby after a period of inactivity. The sound bar will
automatically turn o when no audio signal is detected. O disables this feature.
Note: Default setting is O
Eco Power Mode
O
Input Search The LED indicator
color will change
per specic input.
SETUP > Input Search > OK to initiate an automatic input detection sequence. This is the
same as a long key press of the INPUT button on the remote. Specic inputs will show a
dierent LED color:
• AUX In: Green
• AUX VA: Violet
• Digital Optical: Red
• HDMI In: Yellow
• HDMI (eARC): Magenta
Surr Lvl
Surr Bal
Info
Auto VA
Eco Pwr
BT
AUX
O
Both
Input Srch

ENG - 22 ENG - 23
Function LED Behavior Description
VIZIO Remote Remote On SETUP > VZtvRmt > Use the Next/Previous buttons to enable/disable VIZIO TV
Remotes. When enabled (On), you can use a VIZIO TV remote control to turn on the sound
bar (using the TV Volume Up button) and control volume.
Remote O
Surround Sound
EFFECT > Surnd > Use the Next/Previous buttons to enable/disable surround sound and
front or dual modes. When enabled (On), Dolby and DTS Surround content will produce full
5.1 sound. With stereo content, EQ Music will produce DTS Virtual:X enhanced sound and
EQ Movie will produce realistic 5.1 eect sound. When disabled (O), the surround speakers
will be disabled and the sound bar will only produce DTS Virtual sound eect.
Front - Use when placing surround speakers next to the sound bar. Refer to Proper
Placement - Front Surround Mode on page 18.
Dual - Both surround speakers will play the same left and right channel content as the
sound bar.
Note: With stereo content, if EQ mode is set to Direct and Surround is set to O, the sound
bar will output 2.1 audio without center or surround.
TruVolume
TruVolume On EFFECT > TruVol > Use the Next/Previous buttons to enable/disable TruVolume. When
enabled (On), TruVolume provides a consistent and comfortable volume level for a more
enjoyable listening experience.
Note: Default setting is O
TruVolume O
Virtual:X
Virtual:X On EFFECT > VRT:X > Use the Next/Previous buttons to enable/disable Virtual:X. When
enabled (On), all inputs will produce a virtual sound technology that simulates the eect of
having overhead sound. When disabled (O), all sources will playback without virtualization.
Virtual:X O
Night Mode
Night Mode On EFFECT > Night > Use the Next/Previous buttons to enable/disable Night Mode. When
enabled (On), the sound bar will lower bass frequency levels to provide a more quiet
environment (ideal for apartment living and homes with sleeping children).
Note: Night mode will set to O after a power cycle.
Night Mode O
Mode & Level Settings
VZtvRmt
VRT :X
TruVol
Night
Surnd
Using Button Combinations
There are other functions that are triggered by different button combinations on the sound bar.
Function LED Behavior Description
Factory
Reset
All LEDs will
ash 3 times
Reset the sound bar to the factory default settings. To perform a Factory Reset,
Press and Hold the Bluetooth( ) and Volume Down (—) buttons for 5 seconds.
Note: This will erase all settings and preferences that you have set.
VIZIO TV Remote
Control
Enable VIZIO
TV remote Enable/disable the use of a VIZIO TV remote control to power on and adjust the volume
of the sound bar. To enable/disable this function, Press and Hold the Power ( ) and
Volume Up ( + ) buttons for 5 seconds.
Disable VIZIO
TV remote
Eco Power Mode
Enable
Eco Power
When the Eco Power mode setting is enabled, the sound bar will automatically
power down after a period of inactivity. When disabled, the sound bar will remain
powered on until you turn it o. To enable/disable this function, Press and Hold the
Power ( ) and Volume Down (—) buttons for 5 seconds.
Note: Eco Power Mode setting is OFF by default.
Disable
Eco Power
Buttons are located here.
Frnt
Dual
O
On

ENG - 24 ENG - 25
Programming the Sound Bar
You can program your sound bar to accept TV remote IR commands.
• Press the SETUP button on the remote, then use the Up/Down buttons to navigate to Prg Remote.
• Use the Next/Previous buttons to toggle through Learn Vol -, Learn Vol +, and Learn Mute.
HOME THEATER DISPLAY | QUICK START GUIDE
Installation Guide | Models:
Turn o your TV speakers when
programming your sound bar.
Function LED Behavior Description
Learn Volume Down
Waiting to learn:
Flash from bottom
to top and back
continuously.
Press the OK button to put the sound bar into learning mode. While the sound bar is in
learning mode, press the Volume Down button on the TV remote control.
Learn Volume Up Press the OK button to put the sound bar into learning mode. While the sound bar is in
learning mode, press the Volume Up button on the TV remote control.
Learning conrmed:
All of the LEDs will
blink twice.
Learn Mute Press the OK button to put the sound bar into learning mode. While the sound bar is in
learning mode, press the Mute button on the TV remote control.
Learn Vol-
Learn Vol+
Learn Mute
Point both the sound bar and TV
remotes towards the front of the
sound bar when programming.
Bluetooth Pairing
To pair the sound bar with a Bluetooth device:
1. Press and hold the Bluetooth button on the sound bar or remote control for ve (5) seconds.
2. Search for the sound bar (VIZIO M51a) using your Bluetooth device. For more information, refer to the user
documentation that came with the device.
3. Now you can play audio from your Bluetooth device. Volume can be controlled on both your source device and
the sound bar.
The LED indicators on the display panel on the front of the sound
bar will light up sequentially from bottom to top and back again.
Once the device is paired, the LED indicators will stop flashing.
Bluetooth Device Button Located at the Top of Sound Bar

ENG - 26 ENG - 27
Using Bluetooth Mode
1. Your sound bar supports music streaming from devices with Bluetooth capability.
(Device compatibility will vary, see your device’s documentation for more information.)
2. Once you have paired your source device to the sound bar your device should remain paired (within range).
3. If the source is changed back to Bluetooth, any paired Bluetooth device will reconnect automatically.
4. If the input is changed, the Bluetooth device will disconnect.
Reduce the volume levels on your device and
on the sound bar before pressing Play. High
volume levels can damage your hearing.
Your sound bar is not equipped with a
microphone, so it cannot operate as a
hands-free device for a smartphone.
A Bluetooth signal has a range of up to 30 feet. Keep in mind that Bluetooth is a compressed audio
format, so streamed music may lose some integrity when compared to a wired connection. Try the following
if your sound quality is less than optimal:
• If you hear any break-up or disconnect while streaming music from your device, move the source device closer
to the sound bar.
• Be sure that there are no solid obstructions in the line-of-sight between the sound bar and the source device.
• Other wireless devices can affect Bluetooth range, including wireless security cameras, wireless video
baby monitors, cordless phones, and microwave ovens. Turning off or moving these devices may improve
Bluetooth range.
Maximizing Signal
Connecting to a Voice Assistant
Make sure your sound bar is turned ON and Eco Power setting is
turned OFF. Refer to Eco Power mode on page 20 to disable.
Your sound bar can connect to a Voice Assistant (VA) device through an AUX VA or Bluetooth connection.
Once connected, your sound bar will now act as the VA speaker.
Features and Benets:
• Voice Assistant Dedicated Input: VA can be active on the sound bar even if the sound bar is set to a different
input with audio playing.
• Auto Muting: If playing audio from the sound bar, the VA will play over the original source audio for 10
seconds. If continued after the 10 seconds, the VA audio will mute the original source audio. Once the VA audio
is stopped the original source audio will resume.
Setup Tips:
• If the VA audio is too low, adjust the volume from the VA device.
• If the start of the response from the VA is cut off, enable “Start of Request” from your VA app settings.
• To disable the VA function, use the display remote to turn the Auto VA feature to OFF. Refer to Auto VA on
page 20 for more information.

ENG - 28 ENG - 29
Use a 3.5mm audio cable to connect the AUX VA port on the sound bar to an AUX port on your voice assistant device.
If there is no AUX port on the VA device, use a Bluetooth connection instead.
Benets of this type of connection:
• Simple and easy connection setup.
Using the AUX VA Port to Connect
Connecting to a Voice Assistant
Using Bluetooth to Connect
Press and hold the Bluetooth button on the sound bar or remote for ve (5) seconds. Search for the sound bar (VIZIO
M51a) using your VA device app. For more information, refer to the user documentation that came with the device.
Benets of this type of connection:
• Ability to position the VA device in other locations other than physically connected to the sound bar.
• Ability to place the VA device closer to you so that it can hear commands better.
Connect to the AUX VA port only
OR
Advanced Setup
HOME THEATER DISPLAY | QUICK START GUIDE
Installation Guide | Models:
Game Console
HOME THEATER DISPLAY | QUICK START GUIDE
Installation Guide | Models:
Media Player
HOME THEATER DISPLAY | QUICK START GUIDE
Installation Guide | Models:
Tablet/MP3 Player/Laptop
HDMI Cable Digital Optical
Cable
3.5mm to
RCA Cable USB Drive*
*Supports .WAV and .MP3 le format playback only.
3.5mm Audio Cable

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Connecting with HDMI ARC
HDMI (ARC) port on your TV*
*HDMI ARC port location may dier by TV manufacturer. See your TV’s user manual for more information.
HOME THEATER DISPLAY | QUICK START GUIDE
Installation Guide | Models:
HOME THEATER DISPLAY | QUICK START GUIDE
Installation Guide | Models:
HDMI (ARC)
Connecting with HDMI ARC
* The following steps are for use with a VIZIO TV, steps may dier by TV manufacturer. See your TV’s user manual for more information.
† CEC Function naming may dier by TV manufacturer. See your TV’s user manual for more information.
To connect using HDMI*:
What is HDMI Audio Return Channel (ARC)?
If you want to use the TV remote to control the sound bar volume:
Enable System Audio Control from the CEC menu.
• Using HDMI ARC, your TV can send audio to the sound bar using an HDMI cable.
• Connect your sound bar to your TV’s HDMI ARC port using an HDMI cable that is ARC compatible.
1. Connect one end of the HDMI cable to the HDMI 1 (ARC) port on the back of your TV.
2. Connect the other end to the HDMI (ARC) port on your sound bar.
3. From the AUDIO menu on your TV, change the Digital Audio Setting to Dolby Digital or Bitstream.
4. From the SYSTEM menu, enable CEC and ARC (SAC)†functions.
5. From the CEC menu, select Device Discovery to register the sound bar with the TV.

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AC IN ON / OFF Surrounds
LR
Connecting a Subwoofer
1
First confirm that the power LED is illuminated.
Press and hold the ON/OFF button on the back of
the subwoofer for 5 seconds. The LED on the back
of the subwoofer will begin to blink.
2
Press and hold the Power button on the top of the
sound bar for 5 seconds. The LED indicators on the
front will flash 3 times. The subwoofer is now linked
with the sound bar.
Back of subwoofer
AC IN ON / OFF
Surrounds
LR
The subwoofer has already been paired with the sound bar by VIZIO. However, the subwoofer may need to be
re-linked to the sound bar if there is no sound coming from the subwoofer.
What does pairing mean?
Pairing means to wirelessly connect.
Button Located at the Top of Sound Bar
Wall-mounting
Place the included wall mounting template against the wall under your TV.
Mark the two bracket holes using a pencil.
Center Line
8.58"/ 21,80 cm
WALL MOUNTING TEMPLATE
MARK HERE
LEAVE THIS SPACE BETWEEN THE SOUND BAR AND YOUR TV
Refer to the "Wall-mounting" section in the User Manual for additional information
940±2mm
145±2mm
Wall Mount Screw
Screw Size: M4 x 12L (Includedwith sound bar)
*Bracket Screw
NOT INCLUDED WITH SOUND BAR
MARK HERE
1
2Then place the shorter end of the bracket on the two holes you just marked and screw into
the wall. Be sure your screws are attached to wood studs, drywall anchors (for drywall), or
concrete anchors (for brick/concrete walls).
Screws for attaching the bracket to the wall are
not included. Choose the screw type and length
appropriate to your home’s construction. If in doubt,
consult a professional installer.
Suggested screw size: 3.5 mm diameter,
1.63" minimum length
Bracket Screw*
(Not included with sound bar)
* Do not use any of the included screws for the wall mount installation. These are not intended for mounting.

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Screw size: M4 x 8L
Wall-mount Screw
(Included with sound bar)
Place sound bar onto the L-shaped bracket and use the included bracket screws to attach.
3
* Do not use any of the included screws for the wall mount installation. These are not intended for mounting.
Wall-mounting
Bottom of Sound Bar
Wall-mount Screw Holes
* Do not use any of the included screws for the wall mount installation. These are not intended for mounting.
Wall-mounting
If you are unfamiliar with power tools or the layout
of electrical wiring in the walls of your home, consult
a professional installer.
Be sure your screws are attached to wood studs,
drywall anchors (for drywall), or concrete anchors
(for brick/concrete walls).
Wall mounting hardware is not included.
Wall-mounting the Surround Speakers
To wall-mount the surround speakers:
1. Attach the wall mount screw to the back of the surround
speaker.
2. Secure the wall mount bracket to the wall. (Bracket screw
is not included.)
3. Slide the speaker on to the wall bracket. Ensure the wall
mount screw is secured within the bracket grooves.
Suggested screw size: 3.5 mm diameter,
1.63" minimum length
Bracket Screw*
(Not included with sound bar)
Screw size: M4 x 8L
Wall-mount Screw
(Included with sound bar)

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Register Your Product
VIZIO.COM/PRODUCTREGISTRATION
Why register?
Customized Support
Get assistance quickly with your information on hand.
News and Oers
Take advantage of the latest news and special oers from VIZIO.
Safety and Satisfaction
Stay up-to-date with important product updates and notications.
Customer Service
SUPPORT.VIZIO.COM
Find help with:
• New product setup
• Connecting your devices
• Replacement remotes
• Technical problems
• Bluetooth and streaming
• Product updates and more
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*This number accepts SMS/MMS messages only. No voice calls are accepted. Message and data rates may apply. (U.S. only).
Phone
[phone]
Live Chat Available
Online
Text Message*
[phone]

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Help & Troubleshooting
There is no power.
• Press the POWER button on the remote control or on the top of your sound bar.
• Ensure the power cord is securely connected.
• Plug a different device into the electrical outlet to verify that the outlet is working correctly.
There is no sound.
• Increase the volume. Press VOLUME UP on the remote control or on the top of your sound bar.
• Press MUTE on the remote to ensure the sound bar is not muted.
• Press INPUT on the remote or on the top of your sound bar to select a different input source.
• When using the Digital Optical input, if there is no audio: (A) try setting the TV output to PCM or (B) connect
directly to your Blu-ray/other source, some TVs do not pass through digital audio.
• On digital inputs, the input LEDs will flash rapidly if an unsupported format is present.
Set the source to output PCM.
• Your TV may be set to variable audio output. Confirm that the audio output setting is set to FIXED or
STANDARD, not VARIABLE. Consult your TV’s user manual for more detailed information.
• If using Bluetooth, ensure that the volume on your source device is turned up and that the device is not muted.
I hear buzzing or
humming.
• Ensure all cables and wires are securely connected.
• Connect a different source device (TV, Blu-ray player, etc) to see if the buzzing persists. If it does not, the
problem may be with the original device.
• Connect your device to a different input on the sound bar.
The remote isn’t
working.
• Replace the remote batteries with new ones.
• Point the remote directly at the center of the sound bar when pressing a button.
• If using a Bluetooth connection, some of the buttons on the remote may not be supported by the streaming
application.
Limited Warranty
UNITED STATES AND CANADA
BY USING YOUR VIZIO PRODUCT YOU AGREE TO BE BOUND BY ALL THE TERMS OF THIS WARRANTY. BEFORE USING YOUR VIZIO PRODUCT, PLEASE READ THIS
WARRANTY CAREFULLY. IF YOU DO NOT AGREE TO THE TERMS OF THIS WARRANTY, DO NOT USE THE VIZIO PRODUCT AND, WITHIN THIRTY (30) DAYS OF THE
DATE OF PURCHASE, RETURN IT FOR A REFUND TO THE AUTHORIZED RETAILER WHERE YOU PURCHASED IT.
This warranty contains a binding arbitration agreement and a class action waiver for United States residents. If you live in the United States, the binding arbitration
agreement and class action waiver aect your rights under this warranty. Please read the text under the section titled “Binding Arbitration Agreement; Class Action
Waiver (U.S. Residents Only)” carefully.
How Long This Warranty Lasts
For non-commercial use, VIZIO warrants the product on the terms set forth below for one (1) year from the date of original purchase. For commercial use, VIZIO warrants
this product on the terms set forth below for ninety (90) days from the date of original purchase.
What This Warranty Covers
VIZIO warrants the product against defects in materials and workmanship when the product is used normally in accordance with VIZIO’s user guides and manuals.
Except where restricted by law, this warranty applies only to the original purchaser of a new product. The purchase must have been made from an authorized retailer in
the United States (including Puerto Rico) or Canada. The product must also be located in the country where it was purchased at the time of warranty service.
How to Get Service
Before obtaining warranty service, you may visit www.vizio.com for additional help and troubleshooting.To obtain warranty service, contact VIZIO Customer Support by
going to support. vizio.com and selecting Contact Us.You can also call Customer Support: (US) 877-698-4946;(Canada) 877-878-4946.
Your Obligations Before Service
You must obtain pre-authorization before sending your product to a VIZIO service center. You may be required to supply a purchase receipt (or copy) to show that the
product is within the warranty period.
When you return a product to a VIZIO service center, you must ship the product in its original packaging or in packaging that aords an equal degree of protection. VIZIO
Technical Support will provide instructions for packing and shipping the product to the VIZIO service center.
ALL USER DATAAND DOWNLOADEDAPPLICATIONS STORED ON APRODUCT WILL BE DELETED IN THE COURSE OF SOME IN-HOME AND ALLSHIP-IN WARRANTY
SERVICE. If this occurs, your product will be restored to its original state. You will be responsible for restoring all applicable user data and downloaded applications.
Recovery and reinstallation of user data and downloaded applications is not covered under this warranty. In order to protect your personal information, VIZIO
recommends that you always clear all personal information from the product before it is serviced, regardless of the servicer.
VIZIO’s Responsibilities
If VIZIO determines that a product is covered by this warranty, VIZIO will (at its option) repair or replace it, or refund the purchase price to you. There will be no charge for
parts or labor during the warranty period. Replacement parts may be new or recertied at VIZIO’s option and sole discretion. Replacement parts and VIZIO’s labor are
warranted for the remaining portion of the original warranty or for ninety (90) days from warranty service, whichever is longer.
Types of Service
Products must be sent to a VIZIO service center to obtain warranty service. VIZIO is not responsible for transportation costs to the service center, but VIZIO will cover
return shipping to the customer.