1.
(Standby)
- Switches the unit ON or OFF
F (Function)
- Select the function and input source by pressing F repeatedly.
+ /— (Volume)
- Adjusts volume level.
- Starts playback. / Pauses playback.
(Mic mute)
- Disables the detect voice recognition by pressing . All the Google Assistant LED turns amber and "The mic is muted” is heard.
To cancel it, press again. Google Assistant LED turns off and "The mic is back on" is heard.
- Enables Google Assistant to receive your voice commands. To cancel it, press again.
2. Microphone
3. Remote sensor
4. Google Assistant LED
- Changes LED status according to Google Assistant performance.
5. Display Window
- Display window will be darkened automatically if there is no key input for 15 seconds. When you press any button, the display window will brighten.
This unit will turn itself off to save electric consumption when the main unit is not connected to an external device and is not used for 15 minutes.
Remove foreign materials between the grill and the case by using a cotton swab.
1. DC IN
- Connect to the AC adapter.
2. HDMI OUT (TV ARC)
- Connect the HDMI OUT (TV ARC) jack on the back of the unit to ARC jack on the TV.
3. HDMI IN
- Connect HDMI IN jack on the back of the unit to HDMI OUT jack on the external device. You can enjoy the sound and picture from HDMI connection on an external device.
4. OPTICAL IN
- Connect the OPTICAL IN jack on the back of the unit to OPTICAL OUT jack on the TV.
5. USB Port
- Connect USB memory device to the USB port on the back of the unit
1.
(Standby)
- Switches the unit ON or OFF
• Networked standby: It allows the unit to switch to standby mode.
To turn on Networked standby function, Press .
To turn off Networked standby function, press for about 3 seconds.
2. VOL (Volume) +/ —
- Adjusts speaker volume.
3. SOUND EFFECT
- Selects a sound effect mode by using SOUND EFFECT.
On Display | Description |
ASC (Adaptive Sound Control) | Analyzes the property of the input sound and provides the sound optimized for the content in real time. |
BASS BLAST or BASS BLAST+ | Reinforces the bass and powerful sound. |
STANDARD | You can enjoy premium sound with MERIDIAN technology |
MOVIE | You can enjoy more immersive and cinematic surround sound. |
MUSIC | You can enjoy more good sound for music source. |
To turn on or off the TV Remote function, press and hold SOUND EFFECT for about 3 seconds and press it again.
4. 
(Skip)
- Press to go to next or previous file.
5.
(Play/Pause)
- Starts playback. / Pauses playback.
6. 
(Sound tuning)
- Adjusts sound level of each speaker
Select the speaker you want to adjust by using and adjust the sound level by using VOL + /—.
To turn on or off the surround sound, press and hold for about 3 seconds and press it again.
7. 
(Night time)
- It is useful when you want to watch movies at low volume late at night. It makes to reduce the sound intensity and improve fineness and softness.
Press to activate Night time mode. To cancel it, press again.
8. F (Function)
- Select the function and input source by pressing F repeatedly.
9. 
(Mute)
- Press to mute your unit. To cancel it, press again.
10. 
- Enables Google Assistant to receive your voice commands while watching TV (not necessary when listening to music through Wi-Fi or Bluetooth, you can just say "Hey Google").
To cancel it, press again.
11. 
(Mic mute)
- Disables the detect voice recognition by pressing . All the Google Assistant LED turns amber and "The mic is muted” is heard.
To cancel it, press again. Google Assistant LED turns off and "The mic is back on" is heard.
12. 
(Information)
- You can display various information of the input source by pressing .
• Auto Power ON/OFF: It allows the unit to turn on and off automatically by input signals: Optical
To turn on or off AUTO POWER function, press and hold for about 3 seconds and press it again.
13. REPEAT
- Press REPEAT to select desired repeat or random mode.
14. FOLDER 
- Searches a folder on USB device.
Replacement of Battery
Remove the battery cover on the rear of the remote control, and insert the battery with 
matched correctly
You can hear the sound by connecting the unit to the other device: TV, Blu-ray disc player, DVD player, etc. Place the unit in front of the TV and connect it to the device you want.
You can place the wireless subwoofer anywhere in your room. But it is better to place the subwoofer near the main unit. Turn it slightly toward the center of the room to reduce the wall reflections. For the best surround sound, place the speakers as shown below
Installing the additional foot
You can extend the height of the unit by using additional foot (height: 14 mm (0.55 inches)).
1. Turn the unit upside down.
2. Peel off a sticker attached to the additional foot. Then place it on the existing foot of the unit.
3. Press the additional foot with adequate force to get it firmly fixed.
You can mount the main unit on a wall
Preparation materials
1. Match the TV’s BOTTOM EDGE of Wall bracket install guide with the bottom of TV and attach to the position.
2. When you mount it on a wall (concrete), use the wall plugs. You should drill some holes. A guide sheet (Wall bracket install guide) is supplied to drill. Use the sheet to check the point to drill.
3. Remove the Wall bracket install guide.
4. Fix the brackets with screws (A) as shown in the illustration below.
5. Put the unit on the brackets to match screw holes on the bottom of the unit.
6. Fix the unit with the screws firmly
You can enjoy various functions of this sound bar by connecting to network and your smart device with “Google Home” app.
The “Google Home” app is required to connect the sound bar wirelessly to the network.
Installing “Google Home” App
The “Google Home” app allows you to use various functions of this speaker through your smart device.
Requirements before setup
Through “Google Play” or “App Store”
You can organize the cable with cable ties.
Connect the sound bar to the power supply with the supplied AC adapter.
Wireless subwoofer connection
LED indicator of wireless subwoofer
Setting up the wireless subwoofer for the first time
Manually pairing wireless subwoofer
When your connection is not completed, you can check red LED on the wireless subwoofer and the wireless subwoofer does not make sound. To solve the problem, follow the steps below.
1. Press Pairing on the rear of the wireless subwoofer
2. Turn on the sound bar.
Rear speakers connection (Sold Separately)
Connecting the rear speakers
1. Connect the black stripe wire to the terminal marked - (minus) and the other end to the terminal marked + (plus)
2. Connect the wireless receiver and the rear speakers (right, left) with the speaker cables
LED indicator of wireless receiver
Setting up the wireless receiver for the first time
1. Connect the power cord to the wireless receiver to the outlet.
2. Turn on the main unit: The sound bar and wireless receiver will be automatically connected.
Manually pairing wireless receiver
When your connection is not completed, you can see the red LED on the wireless receiver and rear speakers do not make sound. To solve the problem, follow the below steps.
1. Press PAIRING on the rear of the wireless receiver
2. Turn on the main unit
Please connect with this unit and TV using the optical digital cable or HDMI cable considering the state of the TV.
Using an OPTICAL cable
1. Connect the OPTICAL IN jack on the back of the unit to OPTICAL OUT jack on the TV using an OPTICAL cable
2. Select the input source to OPT/HDMI ARC by pressing F repeatedly.
You can see “OPT” on the display window if connecting normally between this unit and your TV.
Using an HDMI cable
If you connect this unit to a TV that supports HDMI CEC and ARC (Audio Return Channel), you can enjoy the TV audio through the speakers of this unit without connecting the optical cable.
1. Connect the HDMI OUT (TV ARC) jack on the back of the unit to ARC jack on the TV using an HDMI cable.
2. Select the input source to OPT/HDMI ARC by pressing F repeatedly.
You can see “ARC” on the display window if connecting normally between this unit and your TV
1. Connect the USB device to the USB port.
2. Select the USB function by pressing F repeatedly.
1. Connect your Sound Bar to Wi-Fi by using Google Home app.
2. Connect your Sound Bar and TV by using an HDMI cable.
3. Say a voice command. See the following tables.
The “LG Wi-Fi Speaker”app is provided by LG
Electronics. This app allows you to use various functions of this speaker through your smart device:
Requirements before using
You should connect to Wi-Fi by using “Google Home” app prior using this app. (Page 17)
Enjoying music on your device and home network server
You can listen to the music on your smart device and home network server.
Using Chromecast built-in
You can enjoy music contents through this sound bar with Chromecast enabled apps.
Setting and controlling the sound bar
You can manage the sound bar settings and control the sound bar even without remote control.
Requirements
About Bluetooth
Bluetooth is wireless communication technology for short range connection.
The sound may be interrupted when the connection interfered by the other electronic wave or you connect the Bluetooth in the other rooms.
Connecting individual devices under Bluetooth wireless technology does not incur any charges. A mobile phone with Bluetooth wireless technology can be operated via the Cascade if the connection was made via Bluetooth wireless technology.
Bluetooth Profiles
In order to use Bluetooth wireless technology, devices must be able to interpret certain profiles.
This unit is compatible with following profile.
A2DP (Advanced Audio Distribution Profile)
Listening to music stored on the Bluetooth devices
Before you start the pairing procedure, make sure the Bluetooth feature is activated on your
Bluetooth device. Refer to your Bluetooth device’s user guide. Once a pairing operation is performed, it does not need to be performed again.
Using your TV remote control
You can control some functions of this unit by your TV remote control even by other company’s product.Controllable functions are volume up/down and mute.
Press and hold SOUND EFFECT on the remote control for about 3 seconds. “ON - TV REMOTE” appears and you can control this unit by your TV remote control.
To check the status of this function, press and hold SOUND EFFECT on the remote control.
To turn off this function, press and hold SOUND EFFECT on the remote control and press it once again while “ON - TV REMOTE” is scrolled.
AUTO POWER On/Off
This sound bar automatically turns on and off by an input source: Optical
To turn on this function, press and hold 
on the remote control for about 3 seconds and press it once again while “OFF - AUTO POWER” is scrolled.
To check the status of this function, press and hold on the remote control.
To turn off this function, press and hold on the remote control for about 3 seconds and press it once again while “ON - AUTO POWER” is scrolled.
Turning on
When you turn on your TV or an external device connected to this unit, this unit recognizes the input signal and selects the suitable function. You can hear the sound from your device.
Turning off
When the TV is off, this sound bar switches to the Networked standby mode.
Auto function change
This sound bar recognizes input signals such as Optical, HDMI ARC, Bluetooth, and “LG Wi-Fi Speaker” app and then changes suitable function automatically.
When you turn on your TV or an external device
When you turn on your TV or an external device connected by the one among Optical, LG Sound Sync (Optical), or HDMI ARC, this sound bar will change to a suitable function so you can listen to the sound through it.
When you try to connect a Bluetooth device
When you try to connect your Bluetooth device to this unit, Bluetooth function is selected. Play your music on the Bluetooth device.
When you play music by “LG Wi-Fi Speaker” app
When you play music by “LG Wi-Fi Speaker” app on your smart device, this sound bar changes the function to WI-FI and you can listen to the music through it
The speaker switches to the standby mode if there is no music playback or no button operation.
Standby mode
If you press and hold 
for about 3 seconds, the speaker switches to the standby mode. Then “GOODBYE” appears on the display window. And all wireless network ports are deactivated.
Networked standby mode
Option 1.
When music is not played and buttons are not pressed for 15 minutes, the speaker switches to the Networked standby mode. Then “GOOD-BYE” appears on the display window.
Option 2.
If you press 1, the speaker switches to the Networked standby mode. Then “GOOD-BYE” appears on the display window.
If the speaker doesn’t respond, reset the speaker.Press and hold the 
until you hear the beep sound once. You can see “RESET” on the display window. Then all the stored wireless network information is deleted.
| Symptoms | Cause & Solution |
|---|---|
| The unit does not work properly. |
|
| The power does not turn on | Is the power cord plugged into the outlet?
|
| Sound is not produced | Is the volume set to minimum?
Is the mute function activated?
Is the function selected properly?
|
| No woofer sound | Is the subwoofer plugged in?
Is pairing between the unit and the subwoofer disconnected?
|
| The remote control does not work properly. | Is the remote control too far from the unit?
Is there an obstacle in the path of the remote control and the unit?
Are the batteries in the remote control exhausted?
|
| The AUTO POWER function does not work. |
|
| LG Sound Sync does not work. |
|
| When you feel the output sound of the unit is low | Check the details below and adjust the unit according to them.
|
| USB is not recognized |
|
| Bluetooth pairing does not work well. |
|
| The unit does not connect with Bluetooth device. | Make sure the speaker connects to Wi-Fi by using “Google Home” app |
| Voice recognition does not work well. |
|
| Symptoms | Cause & Solution |
|---|---|
| Cannot connect the speaker to your home network. |
|
| Wi-Fi connection does not work well | If you restart the router?
If you install new router.
|
| Symptoms | Cause & Solution |
|---|---|
| The application doesn’t work properly. | Does an error occur when accessing the app?
|
| Symptoms | Cause & Solution |
|---|---|
| This device may have wireless interference |
|
| Bluetooth device may malfunction or make noise in the following cases |
|
| Symptoms | Cause & Solution |
|---|---|
| Can not change input source with F such as BT (Bluetooth), HDMI etc. and only [DEMO] indication is showing in the front display | Unplug the power cord and plug it in again. If that doesn’t work, press and hold F (About 5 seconds) on the main unit until the display indicates current selected function. |
| Remote Control does not work. (No response) |
Reference file: LG SL8YG 3.1.2 Channel 440W Sound Bar
Additionally, the document applies to other LG Electronics models: SPL8-W
or adjust the volume level to cancel the mute function.
.
button.
