LG SL4Y User Manual

OWNER’S MANUAL

Wireless
Sound Bar

Please read this manual carefully before operating your set and retain it for future
reference.

MODEL

SL4Y (SL4Y, SPH4B-W)

1904_Rev02

Copyright © 2019 LG Electronics Inc. All Rights Reserved.

www.lg.com

Getting Started2

Safety Information

1

Getting Started

CAUTION: TO REDUCE THE RISK OF ELECTRIC

SHOCK DO NOT REMOVE COVER (OR BACK)

NO USER-SERVICEABLE PARTS INSIDE REFER

SERVICING TO QUALIFIED SERVICE PERSONNEL.

enclosure that may be of sufcient magnitude to
constitute a risk of electric shock to persons.

in the literature accompanying the product.

WARNING: TO PREVENT FIRE OR ELECTRIC SHOCK
HAZARD, DO NOT EXPOSE THIS PRODUCT TO RAIN
OR MOISTURE.

WARNING: Do not install this equipment in a
conned space such as a book case or similar unit.

CAUTION: Do not use high voltage products around
this product. (ex. Electrical swatter) This product may
malfunction due to electrical shock.

CAUTION: The apparatus should not be exposed to
water (dripping or splashing) and no objects lled
with liquids, such as vases, should be placed on the
apparatus.

CAUTION: Do not block any ventilation openings.
Install in accordance with the manufacturer’s
instructions.
Slots and openings in the cabinet are provided
for ventilation and to ensure reliable operation of
the product and to protect it from over heating.
The openings should never be blocked by placing
the product on a bed, sofa, rug or other similar
surface. This product shall not be placed in a built­in installation such as a bookcase or rack unless
proper ventilation is provided or the manufacturer’s
instruction has been adhered to.

CAUTION: No naked ame sources, such as lighted
candles, should be placed on the apparatus.

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

This lightning ash with arrowhead
symbol within an equilateral triangle
is intended to alert the user to the
presence of uninsulated dangerous
voltage within the product’s

The exclamation point within an
equilateral triangle is intended
to alert the user to the presence
of important operating and
maintenance (servicing) instructions

NOTICE: For safety marking information including
product identication and supply ratings, please refer
to the main label on the bottom or the other surface
of the product.

CAUTION concerning the Power Cord

The Power Plug is the disconnecting device. In case
of an emergency, the Power Plug must remain readily

accessible.

Check the specication page of this owner’s manual
to be certain of the current requirements.

Do not overload wall outlets. Overloaded wall outlets,
loose or damaged wall outlets, extension cords, frayed
power cords, or damaged or cracked wire insulation
are dangerous. Any of these conditions could result
in electric shock or re. Periodically examine the
cord of your device, and if its appearance indicates
damage or deterioration, unplug it, discontinue use of
the device, and have the cord replaced with an exact
replacement part by an authorized service center.
Protect the power cord from physical or mechanical
abuse, such as being twisted, kinked, pinched, closed
in a door, or walked upon. Pay particular attention to
plugs, wall outlets, and the point where the cord exits

the device.

CAUTION: Only use the AC adapter supplied with
this device. Do not use a power supply from another
device or another manufacturer. Using any other
power cable or power supply may cause damage to
the device and void your warranty.

Symbols

Refers to alternating current (AC).

~

0

Refers to direct current (DC).

Refers to class II equipment.

1

Refers to stand-by.

!

Refers to “ON” (power).

Refers to dangerous voltage.

Getting Started 3

1

Getting Started

Table of Contents4

Table of Contents

1 Getting Started

2 Safety Information
6 Introduction
7 Front panel
8 Rear panel
9 Remote control
12 Installing the sound bar
13 Mounting the main unit on a wall

2 Connecting

15 Organizing cables (Optional)
15 Connecting the AC Adapter
16 Wireless subwoofer and rear speaker (Sold

Separately) connection
16 – Wireless subwoofer connection
17 – Rear speakers connection (Sold

Separately)
18 – Surround sound
20 – How to Affix the Ferrite Core
21 Connecting to your TV
21 – Using an OPTICAL cable
21 – LG Sound Sync
23 Optional equipment connection
23 – OPTICAL IN connection
23 – USB connection
23 – Compatible USB devices
24 – USB device requirement
24 – Playable file

Table of Contents 5

3 Operating

26 Basic operations
26 – USB operation
27 Other operations
27 – Using your TV remote control
28 – AUTO POWER On/Off
29 – Auto function change
30 Using a Bluetooth Wireless Technology
30 – About Bluetooth
30 – Bluetooth profiles
30 – Listening to Music of a Bluetooth Device
32 – Controls connected Bluetooth device
32 – Bluetooth connection lock (BT LOCK)
32 Using BLUETOOTH App
32 – Install “Music Flow Bluetooth” App onto

Your BLUETOOTH Device

33 – Activate BLUETOOTH with “Music Flow

Bluetooth” App

4 Troubleshooting

34 Troubleshooting
34 – General
35 – NOTES to use wireless

5 Appendix

36 Trademarks and licenses
37 Specifications
39 Handling the Speaker

1

2

3

4

5

Getting Started6

Introduction

Symbol used in this manual

1

Getting Started

Note

,

Indicates special notes and operating features.

Caution

>

Indicates cautions for preventing possible damages
from abuse.

Front panel

Display Window

- Display window will be darkened automatically if there is no key input for 15 seconds.

A

When you press any button, the display window will brighten.

Remote sensor

B

(Standby)

1

- Switches the unit ON or OFF.

F (Function)

- Select the function and input source by pressing F repeatedly.

Input source / Function Display

C

Optical

LG Sound Sync (Wired)

Bluetooth BT

LG Sound Sync (Wireless) LG TV

USB USB

OPT

Getting Started 7

1

Getting Started

(Volume)

o/p

- Adjusts volume level.

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.

Rear panel

1

Getting Started

A

B

C

Getting Started8

DC IN

- Connect to the AC adapter.

OPTICAL IN

- Connect the OPTICAL IN jack on the back of the unit to OPTICAL OUT jack on the TV.

USB Port

- Connect USB memory device to the USB port on the back of the unit.

Remote control

Getting Started 9

Replacement of Battery

Remove the battery cover on the rear of the remote
control, and insert the battery with 4 and 5
matched correctly.

(Standby)

1

a

- Switches the unit ON or OFF.

VOL (Volume) o/

b

- Adjusts speaker volume.

(Skip/Search)

C/V

- Press C or V to go to next or previous le.

c

- Press and hold C or V during playback and release it at the point you want.

(Play/Pause)

N

- Starts playback. / Pauses playback.

yBT (Bluetooth) connection Lock: It allows you to connect a Bluetooth device only on Bluetooth

d

and LG TV functions. (Page 32)
To turn on or off the Bluetooth connection lock, press and hold N for about 3 seconds and press it
again in BT (Bluetooth) function.

p

1

Getting Started

Getting Started10

SOUND EFFECT

- Selects a sound effect mode by using SOUND EFFECT.

1

Getting Started

e

f

On Display Description

ASC (Adaptive Sound Control)

BASS BLAST or BASS BLAST+ Reinforces the bass and powerful sound.

STANDARD You can enjoy optimized sound.

CINEMA You can enjoy more immersive and cinematic surround sound.

yTV remote: It allows you to control the volume of this unit by your TV remote control even by other

company’s product. (Page 27)
To turn on or off the TV Remote function, press and hold SOUND EFFECT for about 3 seconds and

press it again.

Supported TV brands

,

LG Panasonic Philips Samsung Sharp Sony Toshiba Vizio

(Sound tuning)

- Adjusts sound level of each speaker.
Select the speaker you want to adjust by using

Adjusting rear speakers level is applied only when the rear speakers are connected.

,

Speaker Display Range

Sub Woofer WF -15 ~ 6

Treble TRE -5 ~ 5

Bass BAS -5 ~ 5

Rear R -6 ~ 6

ySurround sound: It allows you to enjoy surround sound with rear speakers. (Page 18)

To turn on or off the surround sound, press and hold

Analyzes the property of the input sound and provides the
sound optimized for the content in real time.

and adjust the sound level by using VOL o/p.

for about 3 seconds and press it again.

Getting Started 11

F (Function)

g

- Select the function and input source by pressing F repeatedly.

(Mute)

[

h

- Press [ to mute your unit. To cancel it, press [ again.

(Information)

J

- You can display various information of the input source by pressing J.

- OPT (Optical): Audio format

i

j

k

- BT (Bluetooth): Connected Bluetooth device name

- USB: File information contained on a USB.

yAuto Power ON/OFF: It allows the unit to turn on and off automatically by input signals: Optical, LG

TV or Bluetooth (Page 28)
To turn on or off AUTO POWER function, press and hold J for about 3 seconds and press it again.

REPEAT

- Press REPEAT to select desired repeat or random mode.

FOLDER W/

- Searches a folder on USB device.

S

1

Getting Started

Getting Started12

Installing the sound bar

You can hear the sound by connecting the unit to the
other device: TV, Blu-ray disc player, DVD player, etc.

1

Getting Started

Place the unit in front of the TV and connect it to the
device you want. (Pages 21 - 23)

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 reections.

For the best surround sound, place the speakers as
shown below.

Caution

>

yFor best performance of wireless connection

such as Bluetooth or wireless subwoofer,
do not install the unit on Metallic furniture
because wireless connection communicates
through a module positioned on the bottom
of the unit.

yBe careful not to make scratches on the

surface of the Unit /Subwoofer when
installing or moving them.

Installing the additional foot

You can extend the height of the unit by using
additional foot (height: 14 mm)

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.

Note

,

yIf the sound bar covers the remote sensor of

the TV, please separate distance between the
sound bar and TV by 10 ~ 15 cm or more.

yThe illustration above may differ from actual

units.

yYou can enjoy surround sound by using

Wireless Rear Speaker kit. Wireless Rear
Speakers Kit sold separately (SPK8-S).

Getting Started 13

Mounting the main unit on a wall

You can mount the main unit on a wall.

Caution

>

Because it is difcult to make a connection after
installing this unit, you should connect the cables
before installation.

Preparation materials

Unit

Wall bracket install guide

Wall bracket

Screws

(Not supplied)

Screws (A)

Wall plug

1. Match the TV’s BOTTOM EDGE of Wall bracket
install guide with the bottom of TV and attach to
the position.

1

Getting Started

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.

Note

,

Screws (A) and Wall Plugs are not supplied for
mounting the unit. We recommend the Hilti
(HUD-1 6 x 30) for the mounting.

Getting Started14

5. Put the unit on the brackets to match screw
holes on the bottom of the unit.

1

Getting Started

6. Fix the unit with the screws firmly.

Note

,

To detach the unit, perform it in reverse order.

Caution

>

yDo not install this unit upside down. It can

damage the parts of this unit or be the cause
of personal injury.

yDo not hang onto the installed unit and avoid

any impact to the unit.

ySecure the unit rmly to the wall so that it

does not fall off. If the unit falls off, it may
result in an injury or damage to the product.

yWhen the unit is installed on a wall, please

make sure that a child does not pull any of
connecting cables, as it may cause it to fall.

Connecting 15

Organizing cables (Optional)

You can organize the cable with cable ties.

1. Hold the cables together with cable ties as shown
below.

2. Tighten cable ties.

Note

,

yAfter all connections are completed, you can

arrange cables as needed.

yCable ties are not supported.

Connecting the AC Adapter

Connect the speaker to the power supply with the
supplied AC adapter.

1. Connect the supplied AC power cord to the AC

adapter.

2. Connect the AC adapter cable to DC IN adapter
input.

3. Plug the AC power cord into an AC outlet.

Caution

>

Only use the AC adapter supplied with this
device. Do not use a power supply from another
device or manufacturer. Using any other power
cable or power supply may cause damage to the
device and void your warranty.

2

Connecting

Connecting16

Wireless subwoofer and rear speaker (Sold Separately) connection

Wireless subwoofer connection

2

LED indicator of wireless subwoofer

Connecting

LED Color Status

Yellow - green
(Blink)

Yellow - green The connection is completed.

Red The wireless subwoofer is in

Off
(No display)

Setting up the wireless subwoofer for
the first time

1. Connect the power cord of the sound bar and the
wireless subwoofer to the outlet.

2. Turn on the sound bar. The sound bar and
the wireless subwoofer will be automatically
connected.

- Yellow - green LED on the front of wireless

subwoofer turns on.

The connection is trying.

standby mode or the connection
is failed.

The power cord of wireless
subwoofer is disconnected.

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.

- The yellow - green LED on the front of the

wireless subwoofer blinks quickly.
(If the yellow - green LED does not blink, press
and hold the PAIRING.)

2. Turn on the sound bar.

- Pairing is completed. The yellow - green LED on

the front of the wireless subwoofer turns on.

Note

,

yIt takes a few seconds (and may take longer)

for the main unit and the subwoofer to
communicate with each other and make
sounds.

yThe closer the main unit and the subwoofer,

the better sound quality. It is recommended
to install the main unit and the subwoofer as
close as possible and avoid the cases below.

- There is an obstacle between the main unit
and the subwoofer.

- There is a device using same frequency
with this wireless connection such as
a medical equipment, a microwave or a
wireless LAN device.

- Keep the sound bar and the subwoofer
away from the device (ex. wireless router,
microwave oven, etc.) over 1 m to prevent
wireless interference.

1 m

!

Connecting 17

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

Connecting

2. Connect the wireless receiver and the rear
speakers (right, left) with the speaker cables.

Color Position

Grey Rear right

Blue Rear left

Note

,

You need to purchase the wireless rear speakers
kit (SPK8-S) to enjoy surround sound.

Connecting18

Caution

>

yUse the speaker supplied with this unit

only. Using any other speaker may cause
malfunction.

yBe sure to match the speaker cable to the

appropriate terminal on the components: +
to + and – to –. If the cables are reversed, the
sound will be distorted and will lack bass.

2

LED indicator of wireless receiver

Connecting

LED Color Status

Yellow - green
(Blink)

Yellow - green

Red The wireless receiver is in standby

Off
(No display)

The connection is trying.

The connection is completed.

mode or the connection is failed.

The power cord of wireless
receiver is disconnected.

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.

- Yellow - green LED on the wireless receiver

turns on.

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.

- The yellow - green LED on the wireless receiver

blinks quickly.

2. Turn on the main unit

- Paring is completed. The yellow - green LED on

the wireless receiver turns on.

Surround sound

You can enjoy magnicent surround sound for all the
input sound source with rear speakers.

If you turn on the surround function, the whole
speaker outputs sound.
When you turn off the surround function, the
speakers output sound as an original input sound

channel.

To turn on surround function, press and hold on
the remote control for about 3 seconds and press it
once again while “OFF - SURROUND” is scrolled.

To turn off surround function, press and hold
the remote control for about 3 seconds and press it
once again while “ON - SURROUND” is scrolled.

on

Surround function ON

Connecting 19

Sound Effect Input

2.0 Ch

ASC

5.1 Ch

2.0 Ch

STANDARD

5.1 Ch

BASS BLAST

or

BASS BLAST +

CINEMA

2.0 Ch

5.1 Ch

2.0 Ch

5.1 Ch

Surround function OFF

Sound Effect Input

2.0 Ch

ASC

5.1 Ch

Output

No rear speakers Rear speakers connected

2

Connecting

Output

No rear speakers Rear speakers connected

STANDARD

BASS BLAST

or

BASS BLAST +

CINEMA

2.0 Ch

5.1 Ch

2.0 Ch

5.1 Ch

2.0 Ch

5.1 Ch

Connecting20

How to Affix the Ferrite Core

Ferrite core may not be provided depending on each
nation’s regulations.

Affix the Ferrite Core for speaker
cables

You must afx a ferrite core in order to reduce or
eliminate electrical interference.

2

1. Pull the stopper [a] of the ferrite core to open.

Connecting

2. Wind the speaker cables around the ferrite core
twice.

3. Close the ferrite core until it clicks.

Note

,

yIf there is a strong electromagnetic wave

product nearby, interference may occur. Put
the main unit and wireless receiver away from

there.

yThe wireless receiver will automatically switch

to standby mode in a few minutes after the
sound bar is turned off.
When the wireless receiver is in standby
mode, the LED will turn on in red.

yWhen you turn on the sound bar, the wireless

receiver will turn on and the LED will change
to yellow - green and then the rear speakers
makes sound within a few seconds.

yIt takes a few seconds (and may take longer)

for the main unit and Wireless Receiver to
communicate with each other.

yUse the rear speaker at least 30 cm away from

either TV screen or PC monitor.

yWhen the wireless receiver is being

connected or disconnected with the main
unit, output sound may be interrupted.

ySet the distance between the sound bar and

the wireless receiver as close as possible and
keep them away from the device (ex. wireless
router, microwave oven, etc.) over 1 m to
prevent wireless interference.

!

1 m

Connecting 21

Connecting to your TV

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.

Optical

cable

2. Select the input source to OPT by pressing F
repeatedly.

You can see “OPT” on the display window if

connecting normally between this unit and your

TV.

Note

,

yBefore connecting the optical cable, be sure

to remove the protection plug cover if your
cable has the cover.

yYou can enjoy the TV audio through the

speakers of this unit. In the case of some TV
models, you must select the external speaker
option from the TV menu. (For details,
reference your TV user manual.)

ySet up the sound output of TV to listen to the

sound through this unit:
TV setting menu [ [Sound] [ [TV Sound
output] [ [External speaker (Optical)]

yDetails of TV setting menu vary depending on

the manufacturers or models of your TV.

LG Sound Sync

You can control some functions of this unit by
your TV’s remote control with LG Sound Sync. It is
compatible with the LG TV that is supported LG
Sound Sync. Make sure of the LG Sound Sync logo on
your TV.

Controllable function by LG TV’s remote control:
Volume up/down, mute

Refer to the TV’s instruction manual for the details of
LG Sound Sync.

Make one of the following connections, depending on
the capabilities of your equipment.

Note

,

yYou can also use the remote control of this

unit while using LG Sound Sync. If you use TV’s
remote control again, the unit synchronizes
with the TV.
According to TV Specications, the volume
and mute of this unit synchronize with TV.

yWhen the connection fails, make sure of the

condition of the TV and power.

yMake sure of the condition of this unit and

the connection in the cases below when using
LG Sound Sync.

- The unit is turned off.

- Changing the function to the others.

- Disconnecting the optical cable.

- Disconnecting the wireless connection

caused by interference or a distance.

yThe amount of time to turn off this unit is

different depending on your TV when you set
AUTO POWER function to ON.

yDetails of TV setting menu vary depending on

the models of your TV.

2

Connecting

Connecting22

LG Sound Sync with wired connection

1. Connect your LG TV to the unit by using an
optical cable.

2

Connecting

2. Set up the sound output of TV to listen to the
sound through this unit:
TV setting menu [ [Sound] [ [TV Sound
output] [ [LG Sound Sync (Optical)]

3. Turn on the unit by pressing 1.

4. Select the input source to OPT by pressing F

repeatedly.

You can see “LGOPT” on the display window if

connecting normally between this unit and your

TV.

Note

,

Details of TV setting menu vary depending on
the models of your TV.

Optical

cable

LG Sound Sync with wireless
connection

1. Turn on the unit by pressing 1.

2. Select the LG TV function by pressing F

repeatedly.

3. Set up the sound output of TV to listen to the
sound through this unit:
TV setting menu [ [Sound] [ [TV Sound
output] [ [LG Sound Sync (Wireless)]

“PAIRED” appears on the display window for

about 3 seconds and then you can see “LG TV”
on the display window if connecting normally
between this unit and your TV.

Note

,

If you turned off the unit directly by pressing

(Power), LG Sound Sync (Wireless) will be

1

disconnected.

Connecting 23

Optional equipment connection

OPTICAL IN connection

Connect an optical output jack of external devices to
the OPTICAL IN jack.

Optical cable

To the optical output

jack of external device

1. Connect the OPTICAL IN jack on the back of the
unit to optical out jack of your external device.

2. Select the input source to OPT by pressing F

repeatedly.

You can see “OPT” on the display window if

connecting normally between this unit and your

device.

Note

,

Before connecting the optical cable, be sure to
remove the protection plug cover if your cable
has the cover.

USB connection

Connect USB memory device to the USB port on the
back of the unit.

For more information of playing les on a USB, refer
to the page 26.

Removing the USB Device from the unit.

Choose a different function/mode.

1.

2. Remove the USB device from the unit.

Compatible USB devices

yMP3 Player: Flash type MP3 player.

yUSB Flash Drive: Devices that support USB 1.1.

yThe USB function of this unit does not support

some USB devices.

2

Connecting

Caution

>

If the optical cable is not connected in the
correct direction, it may cause damage of optical
jack.

Optical jack Optical cable Optical jack Optical cable

<O> <X>

Connecting24

USB device requirement

yDevices which require additional program

installation connected to a computer, are not
supported.

yDo not extract the USB device while in operation.

yFor a large capacity USB, it may take longer than a

few minutes to be searched.

yTo prevent data loss, back up all data.

2

yThis unit is not supported when the total number

Connecting

of les is 999 or more.

yThe unit’s USB Port cannot be connected to PC.

The unit can not be used as a storage device.

yFAT16/FAT32 le system is supported on this unit.

yDepending on some devices, it may not available to

recognize the followings on this unit.

- External HDD

- Card readers

- Locked devices

- Hard type USB devices

- USB hub

- Using USB extension cable

- iPhone/iPod/iPad

- Android device

Playable file

Sampling Frequency

MP3: within 32 to 48 kHz
WMA: within 32 to 48 kHz

Bitrate resolution

MP3: within 80 to 320 kbps

WMA: within 56 to 128 kbps

yMaximum les: Under 999

yMaximum directories: Under 99

yA protected le by DRM (Digital rights

management) cannot be played on the unit.

yVideo les in the USB storage device can not be

played.

yDepending on the performance of your USB

device, playback may not work well.

Note

,

yFolders and les on the USB are recognized

as below.

: Folder

: File

Connecting 25

b

d

C

D

E

F

G

H

I

J

a

c

A

B

yIf there is no le in a folder, the folder will not

appear.

yFile will be played from le $A to le $J

one by one.

yFiles will be played in order recorded and it

may be different depending on the record
circumstances.

yThis unit can display le or folder names that

contain numbers or English characters only.

y*ROOT: The rst screen you can see when a

this unit recognize the USB is “ROOT”.

2

Connecting

Operating26

Basic operations

USB operation

1. Connect the USB device to the USB port.

2. Select the USB function by pressing F repeatedly.

To Do this

Playback

Pause

3

Operating

Skip to the next/

previous le

Press N on the remote

control.

During playback, press N on
the remote control.

During playback, press V on
the remote control to go to the
next le.

Playing less than 3 seconds,

press C on the remote

control to go to the previous
le.

Playing after 3 seconds, press

on the remote control to

C

go to the beginning of the le.

Note

,

yThe resume point may be cleared when you

pull out the power cord or removing the USB
device from the unit.

yRepeat/Random playback operates as follows.

On Display Description

OFF Plays songs on USB device

ONE Plays a same song

FOLDER Plays songs in a folder

ALL Plays all the songs on USB

SHUFFLE Plays all the songs once

in order.

repeatedly.

repeatedly.

device repeatedly.

randomly, and stops the
playback.

Search for a

section within a

le

Play repeatedly

or randomly

Search a folder

Resume

playback

Press and hold
remote control during playback
and release it at the point you
want to listen to.

Press REPEAT on the remote
control repeatedly. Refer to
the note for details about the

display change.

Press FOLDER W/S on the

remote control.

This unit memorizes a current
song which is played before
changing the function or
turning off the unit.

C/V

on the

Operating 27

Other operations

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.

Note

,

yMake sure that the sound output of your TV

is set to [External speaker].

yThis function does not operate on LG TV’s

magic remote control.

ySome remote control may not be supported.

How to disconnect the wireless
network connection or the wireless
device

Set up the AUTO POWER ON/OFF function to off
and turn off the unit.

3

Operating

Operating28

AUTO POWER On/Off

This unit automatically turns on by an input source:
Optical, LG TV or Bluetooth.

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.

If you try to connect your Bluetooth device, this
unit turns on and the unit will be connected to your

Bluetooth device.

To turn on this function, press and hold J 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

3

Operating

on the remote control.

J

To turn off this function, press and hold J on the
remote control for about 3 seconds and press it once
again while “ON - AUTO POWER” is scrolled.

Note

,

yAfter the unit is turned on by AUTO POWER

function, it will be automatically turned off if
there is no signal for a certain period of time
from the TV connected by LG Sound Sync
(Optical/Wireless).

yAfter the unit is turned on by AUTO POWER

function, it will be automatically turned off if
there is no signal for a certain period of time
from the external device.

yIf you turned off the unit directly, it cannot

be turned on automatically by AUTO POWER
function. However the unit can be turned on
by AUTO POWER function when optical signal
comes in after 5 seconds of no signal.

yDepending on the connected device, this

function may not operate.

yIf you disconnect Bluetooth connection by

this unit, some Bluetooth devices try to
connect to the unit continually. Therefore it is
recommended to disconnect the connection
before turning off the unit.

yWhen you turn on this unit for the rst time,

status of Auto Power function is turned on.

yTo use this function, the main unit must be

registered in paired devices list of Bluetooth
device.

yYou can set the AUTO POWER function only

when this unit is turned on.

Auto function change

This unit recognizes input signals such as Optical,
Bluetooth and LG TV and then changes suitable
function automatically.

When optical signal comes in

When you turn on the external device connected to
this unit by an optical cable, this unit changes the
function to optical. You can hear the sound from your

device.

When you try to connect 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 LG TV signal comes in

When you turn on your LG TV connected by LG
Sound Sync (Wireless connection), this unit changes
the function to LG TV. You can hear the sound from
your TV.

Note

,

If the Bluetooth connection lock function is set,
Bluetooth connection will be only available on
Bluetooth and LG TV function. (Page 32)

Operating 29

3

Operating

Operating30

Using a Bluetooth Wireless Technology

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

3

can be operated via the Cascade if the connection

Operating

was made via Bluetooth wireless technology.

yAvailable Devices: Smart phone, MP3, Notebook,

etc.

yVersion: 4.0

yCodec: SBC

Bluetooth profiles

In order to use Bluetooth wireless technology,
devices must be able to interpret certain proles. This
speaker is compatible with following prole.

A2DP (Advanced Audio Distribution Prole)

Listening to Music of a Bluetooth Device

Before you start the pairing procedure, make sure
that the Bluetooth feature on your smart device
is turned on. Refer to your Bluetooth device’s user
guide. Once a pairing operation is performed, it does
not need to be performed again.

1. Select the Bluetooth function by pressing F
repeatedly.

Appears “BT” and then “READY” in display
window.

2. Operate the Bluetooth device and perform
the pairing operation. When searching for this
speaker on your Bluetooth device, a list of the
devices found may appear in the Bluetooth
device display depending on the type of

Bluetooth device.

Your speaker appears as “LG SL4Y(XX)”

3. Select the “LG SL4Y(XX)”.

Note

,

yXX means the last four digits of address.

For example, if your unit has a MAC
address such as 9C:02:98:4A:F7:08, you
will see “LG SL4Y(08)” on your Bluetooth

device.

yDepending on the Bluetooth device type,

some devices have a different pairing way.
For details about Bluetooth pairing, refer
to your Bluetooth device manual.

Operating 31

4. When this unit is successfully connected with
your Bluetooth device,
“PAIRED” [ your device’s name [ “BT” appears
on the display window.

Note

,

yIf it is unavailable to display device name

on the unit, “-” will be displayed.

yTo check the connected device’s name,

press J on the remote control. The

connected Bluetooth device’s name is

displayed.

5. Listen to music.

To play music in your Bluetooth device, refer to

your Bluetooth device’s user guide.

Note

,

yWhen using Bluetooth technology, you have

to make a connection between the unit and
the Bluetooth device as close as possible and
keep the distance.
However it may not work well in the case
below:

- There is an obstacle between the unit and
the Bluetooth device.

- There is a device using same frequency

with Bluetooth technology such as a
medical equipment, a microwave or a
wireless LAN device.

Note

,

yIf Bluetooth connection does not work well,

try pairing it again.

yThe sound may be interrupted when the

connection has interference by the other
electronic waves.

yPairing is limited to one Bluetooth device per

unit and multi-pairing is not supported.

yDepending on the type of the device, you may

not be able to use the Bluetooth function.

yYou can enjoy Bluetooth function using

smart phone, MP3, Notebook, etc..

yThe more distance between the unit and the

Bluetooth device, the lower the sound quality
becomes.

yBluetooth connection will be disconnected

when the unit is turned off or the Bluetooth
device gets to far from the unit.

yWhen Bluetooth connection is disconnected,

connect the Bluetooth device to the unit

again.

yWhen the unit is not connected, “READY”

appears in the display window.

yWhen you connect Bluetooth device (iOS

device etc.) to this unit or operate the device,
the volume level can be synchronized with
each other.

yIf you change to another function after

connecting Bluetooth, Bluetooth connection
will be disconnected. And you return to
Bluetooth function, Bluetooth connection
will be connected automatically.

3

Operating

Operating32

Controls connected Bluetooth device

You can control the connected Bluetooth device
from the unit; play, pause, skip, volume.

Note

,

yOnly Android OS and iOS is available to use

this function.

yThis function may not be supported

depending on the Bluetooth device or some
of TV operated differently.

Bluetooth connection lock (BT

3

Operating

LOCK)

You can limit Bluetooth connection to only
BT (Bluetooth) and LG TV function to prevent
unintended Bluetooth connection.

To turn on this function, press and hold N on
the remote control for about 3 seconds in BT
(Bluetooth) function and press it once again while
“OFF - BT LOCK” is scrolled. Then you can limit
Bluetooth connection.

To turn off this function, press and hold N on
the remote control for about 3 seconds in BT
(Bluetooth) function and press it once again while
“ON - BT LOCK” is scrolled.

Note

,

Even if you set up BT LOCK function to On, this
sound bar turns on by Auto Power function. Turn
off Auto Power function to prevent it. (Page 28)

Using BLUETOOTH App

Note

,

yOnly Android OS is available to use “Music

Flow Bluetooth” app with this unit.

yAdditional data charges may occur if installed

over 3G/4G, according to your device plan.

About “Music Flow Bluetooth” App

“Music Flow Bluetooth” app brings a suite of new
features to this unit.

To enjoy more features, you are recommended to
download and install free “Music Flow Bluetooth”

app.

Install “Music Flow Bluetooth” App onto Your BLUETOOTH Device

There are two ways to install “Music Flow Bluetooth”
app onto your Bluetooth device.

Install “Music Flow Bluetooth” App
through QR code

1. Install “Music Flow Bluetooth” app through QR
code. Use the scanning software to scan the QR
code.

2. Tap an icon for installation.

Note

,

yMake sure that your Bluetooth device is

connected to the Internet.

yMake sure that your Bluetooth device

has a scanning software application. If you
don’t have one, download one from “Google
Android Market (Google Play Store)”.

yDepending on area, QR code may not work.

yYou can nd the available application of this

unit by using “LG Audio” app. Android OS: Ver

5.0 (or later)

Operating 33

Install “Music Flow Bluetooth” App
through “Google Android Market
(Google Play Store)”

1. Tap the “Google Android Market (Google Play
Store)” icon.

2. In the search bar, type in the “Music Flow
Bluetooth” and search it.

3. In the search result list, find and tap “Music Flow
Bluetooth” to start downloading Bluetooth app.

4. Tap an icon for installation.

Note

,

yMake sure that your Bluetooth device is

connected to the Internet.

yMake sure that your Bluetooth device is

equipped with “Google Android Market
(Google Play Store)”.

Activate BLUETOOTH with “Music Flow Bluetooth” App

“Music Flow Bluetooth” app helps to connect your
Bluetooth device to this unit.

1. Tap “Music Flow Bluetooth” app icon on the
home screen to open “Music Flow Bluetooth”
app, and go to the main menu.

2. If you want to get more information to operate,
tap [Setting] and tap [Help] menu.

Note

,

y“Music Flow Bluetooth” app will be available

in the software version as follow;

- Android O/S: Ver 4.0.3 (or later)

yIf you use “Music Flow Bluetooth” app for

operation, there would be some differences
between “Music Flow Bluetooth” app and
the supplied remote control. Use the supplied
remote control as necessary.

yDepending on the Bluetooth device, “Music

Flow Bluetooth” app may not work.

yAfter connection of “Music Flow Bluetooth”

app, music may be output from your device. In
this case, try connecting procedure again.

yIf you operate the other applications or

change the settings on your Bluetooth device
while using “Music Flow Bluetooth” app,
“Music Flow Bluetooth” app may operate
abnormally.

yWhen “Music Flow Bluetooth” app operates

abnormally, check your Bluetooth device and
the connection of “Music Flow Bluetooth”
app and then try to connect again.

yDepending on the smart phone's operating

system, you have some differences for “Music
Flow Bluetooth” operation.

yEven though Bluetooth connection will

be disconnected, you can use “Music Flow
Bluetooth” app when you change the
function.

yAdditional features offered by "Music Flow

Bluetooth" app may not work depending on
the distance between this unit and Bluetooth
device and wireless conditions.

3

Operating

Troubleshooting34

Troubleshooting

General

Symptoms Cause & Solution

yTurn off the power of this unit and the connected external device (TV, Woofer,

The unit does not work

properly.

No Power

DVD-player, Amplier, etc.) and turn them on again.

yDisconnect the power cord of this unit and the connected external device (TV,

Woofer, DVD-player, Amplier, etc.) and then try connecting again.

yPrevious setting may not be saved when device power is shut off.

yThe power cord is unplugged.

Plug in the power cord.

yCheck whether electricity failed.

Check the condition by operating other electronic devices.

4

Troubleshooting

No woofer sound

The remote control does

not work properly.

The AUTO POWER function

does not work.

LG Sound Sync does not

No sound

work.

yIncorrect input source is selected.

Check the input source and select the correct input source.

yThe mute function is activated.

Press [ (Mute) or adjust the volume level to cancel the mute function.

yWhen you are using connection with a external device (set top box, Bluetooth

device etc.), adjust volume level of the device.

yThe power cord of the subwoofer is not connected.

Plug the power cord into the wall outlet securely.

yPairing between the unit and the subwoofer gets disconnected.

Connect the unit and the subwoofer. (Page 16)

yThe remote control is too far from the unit.

Operate the remote control within about 7 m.

yThere is an obstacle in the path of the remote control and the unit.

Remove the obstacle.

yThe batteries in the remote control is exhausted.

Replace the batteries with new one.

yCheck connection of the external device such as TV, DVD/Blu-Ray player or

Bluetooth device.

yDepending on the connected device, this function may not operate.

yCheck whether your LG TV supports LG Sound Sync.

yCheck connection of LG Sound Sync (Optical or wireless).

yCheck sound setting of your TV and this unit.

Symptoms Cause & Solution

Troubleshooting 35

The unit does not connect

with Bluetooth device.

When you feel the output

sound of the unit is low.

yTurn off the Bluetooth connection lock function. (Page 32)

Check the details below and adjust the unit according to them.

yWith the sound bar connected with TV, change the AUDIO DIGITAL OUT

setting on TV Setup Menu from [PCM] to [AUTO] or [BITSTREAM].

yWith the sound bar connected with Player, change the AUDIO DIGITAL OUT

setting on Player Setup Menu from [PCM] to [PRIMARY PASS-THROUGH] or
[BITSTREAM].

yChange Audio DRC setting on connected device setup menu to [OFF] state.

yMake sure Night time mode is not On. Turn [OFF] Night time mode.

NOTES to use wireless

Symptoms Cause & Solution

This device may have

wireless interference.

Bluetooth device may

malfunction or make

noise in the following

cases.

yWireless may not operate normally in weak signal area.

yPlease install the device close enough to wireless subwoofer.

yDo not install the device on metal furniture for optimum performance.

yWhen any part of your body contact the transceiver of the Bluetooth device

or sound bar.

yWhen there is an obstacle or wall or the device is installed in a secluded spot.

yWhen there is a device (a wireless LAN, a medical equipment or a microwave)

using same frequency, make the distance between the products as far away
as possible each other.

yWhen connecting the device to the Bluetooth device, make the distance

between the products as close as possible each other.

yWhen the device gets too far from the Bluetooth device, the connection is

disconnected and also malfunction may occur.

4

Troubleshooting

Appendix36

Trademarks and licenses

All other trademarks are trademarks of their
respective owners.

Manufactured under license from Dolby
Laboratories. Dolby, Dolby Audio, and the double-D
symbol are trademarks of Dolby Laboratories.

For DTS patents, see http://patents.dts.com.
Manufactured under license from DTS Licensing
Limited. DTS, the Symbol, DTS and the Symbol
together, and Digital Surround are registered

5

trademarks and/or trademarks of DTS, Inc. in the

Appendix

United States and/or other countries. © DTS, Inc.

All Rights Reserved.

The Bluetooth® word mark and logos are

registered trademarks owned by the Bluetooth
SIG, Inc. and any use of such marks by LG
Electronics is under license.
Other trademarks and trade names are those of
their respective owners.

Specifications

General

Refer to the main label on the unit.

Power consumption

AC adapter

Dimensions (W x H x D) Approx. 890.0 mm X 57.0 mm X 85.0 mm With foot

Operating temperature 5 °C to 35 °C

Operating humidity 5 % to 90 %

Bus Power Supply (USB) 5 V 0 500 mA

Available Digital Input Audio
Sampling Frequency

Available Digital Input Audio format Dolby Audio, DTS Digital Surround, PCM

Input/Output

OPTICAL IN 3 V (p-p), Optical jack x 1

Amplier (RMS Output)

Total 300 W RMS

Front 50 W RMS x 2 (4 Ω at 1 kHz, THD 10 %)

Subwoofer 200 W RMS (3 Ω at 80 Hz, THD 10 %)

Networked standby: 0.5 W

(If all network ports are activated.)

yModel: DA-38A25

yManufacturer: Asian Power Devices Inc.

yInput: 100 - 240 V ~ 50 - 60 Hz

yOutput: 25 V 0 1.52 A

32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz

Appendix 37

5

Appendix

Appendix38

Wireless subwoofer

Power requirements Refer to the main label on the subwoofer.

Power consumption Refer to the main label on the subwoofer.

Type 1 Way 1 Speaker

Impedance 3

Rated Input Power 200 W RMS

Max. Input Power 400 W RMS

Dimensions (W x H x D) Approx. 171.0 mm x 390.0 mm x 261.0 mm

Ω

SPK8-S (SPK8-S, S78S1-S), Sold Separately

Wireless receiver

Power requirements Refer to the main label on the wireless receiver.

Power consumption Refer to the main label on the wireless receiver.

Rear 70 W RMS x 2 (3 Ω at 1 kHz, THD 10 %)

Dimensions (W x H x D) Approx. 60.0 mm x 220.0 mm x 175.0 mm

Rear speakers (Each)

Type 1 Way 1 Speaker

5

Appendix

Impedance 3

Rated Input Power 70 W RMS

Max. Input Power 140 W RMS

Dimensions (W x H x D) Approx. 100.0 mm x 140.0 mm x 100.0 mm

Ω

yDesigns and specications are subject to change without prior notice.

Handling the Speaker

When shipping the speaker

Please save the original shipping carton and packing
materials. If you need to ship the speaker, for
maximum protection, re-pack the speaker as it was
originally packed at the factory.

Keeping the exterior surfaces clean

yDo not use volatile liquids such as insecticide spray

near the speaker.

yWiping with strong pressure may damage the

surface.

yDo not leave rubber or plastic products in contact

with the speaker for a long period of time.

Cleaning the speaker

To clean the player, use a soft, dry cloth. If the
surfaces are extremely dirty, use a soft cloth lightly
moistened with a mild detergent solution. Do not use
strong solvents such as alcohol, benzine, or thinner,
as these might damage the surface of the speaker.

Appendix 39

5

Appendix