LG RK8 User manual

OWNER’S MANUAL
High Power
Speaker System
Please read this manual carefully before operating
your set and retain it for future reference.
MODEL
RK8
www.lg.com
Copyright © 2018 LG Electronics Inc. All Rights Reserved.

1 Getting Started
Getting Started
2
Getting Started
1
Safety Information
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
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.
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 enclosure that may be of
sufcient magnitude to constitute
a risk of electric shock to persons.
The exclamation point within an
equilateral triangle is intended
to alert the user to the presence
of important operating and
maintenance (servicing)
instructions in the literature
accompanying the product.
WARNING: TO PREVENT FIRE OR ELECTRIC SHOCK
HAZARD, DO NOT EXPOSE THIS PRODUCT TO RAIN
OR MOISTURE.
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.
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: 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 shall be never be blocked by placing
the product on a bed, sofa, rug or other similar
surface. This product should not be placed in a built-
in installation such as a bookcase or rack unless
proper ventilation is provided or the manufacturer’s
instruction has been adhered to.
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.

Getting Started
3
Getting Started
1
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.
This device is equipped with a portable battery or
accumulator.
How to Safely remove the batteries or the battery
pack from the equipment:
To Remove the old batteries or battery pack, follow
the assembly steps in reverse order. To prevent
contamination of the environment and bring on
possible threat to human and/or animal health, the
old batteries or the battery pack must be put in an
appropriate container at designated collection points.
Do not dispose of batteries or battery pack together
with other waste. It is recommended that you use
local, free reimbursement systems batteries or
battery packs, (may not be available in your area). The
batteries or the battery pack should not be exposed
to excessive heat such as sunshine, re or the like.
CAUTION: No naked ame sources, such as lighted
candles, should be placed on the apparatus.
Symbols
~Refers to alternating current (AC).
0Refers to direct current (DC).
Refers to class II equipment.
1Refers to stand-by.
!Refers to “ON” (power).
Refers to dangerous voltage.

Table of Contents
4
Table of Contents
1 Getting Started
2 Safety Information
6 Unique Features
7 Playable file Requirement
7 – Music file requirement
7 – Compatible USB Devices
7 – USB device requirement
8 Top panel
10 Rear panel
11 Carrying the unit
2 Connecting
12 Power Connection
13 Charging Battery
14 Optional Equipment Connection
14 – PORT. IN Connection
14 – Listening to music from your portable player
14 – USB Connection
3 Operating
15 Basic Operations
15 – USB Operations
16 – Auto Play
17 – Selecting a folder and an MP3/WMA file
18 Playback Effect
18 – DJ EFFECT
18 – SCRATCH
18 – DJ PRO
19 – DJ LOOP
19 – TEMPO
19 – MIX
20 – AUTO SYNC
21 Using BLUETOOTH® wireless technology
21 – Listening to music stored on the Bluetooth
devices
22 – Bluetooth connection lock
(BLUETOOTH LOCK)
24 Using the Music Flow Bluetooth App
24 – About “Music Flow Bluetooth” App
24 – Install “Music Flow Bluetooth” App onto
Your Bluetooth Device
25 – Activate Bluetooth with “Music Flow
Bluetooth” App

Table of Contents
5
1
2
3
4
5
26 Radio Operations
26 – Listening to the radio
26 – Improving poor FM reception
26 – Presetting the Radio Stations
26 – Deleting all the saved stations
27 Sound adjustment
27 – Setting the sound mode
27 – Setting the USER EQ
28 Advanced Operations
28 – Recording to USB1
30 Other Operations
30 – Displaying file information (ID3 TAG)
30 – DEMO
30 – Using HEADPHONE MODE
31 – Using Microphone
33 – LIGHTING
34 – Auto power down
34 – AUTO POWER On / Off
35 – Auto function change
36 LG Sound Sync
37 WIRELESS PARTY LINK Connection
4 Troubleshooting
38 Troubleshooting
5 Appendix
39 General specifications
40 Trademarks and Licenses
40 Maintenance
40 – Handling the Unit

Getting Started
6
Getting Started
1
Unique Features
BLUETOOTH®
Listens to music stored on your Bluetooth device.
Portable In
Listens to music from your portable device.
(MP3, Notebook, etc.)
Playback effects
Listens to music with various sound and playback
effects.
USB Direct Recording
Records music to your USB device.
Music Flow Bluetooth
Music Flow Bluetooth is an app designed to let you
take control of some of LG’s latest audio devices.
(page 24)
LG Sound Sync
Controls volume level of this unit by the remote
control of your LG TV that is compatible with LG
Sound Sync.

Getting Started
7
Getting Started
1
Playable file
Requirement
Music file requirement
MP3/WMA le compatibility with this unit is limited
as follows.
ySampling frequency: within 32 to 48 kHz (MP3),
within 32 to 48 kHz (WMA)
yBit rate: within 32 to 320 kbps (MP3),
40 to 192 kbps (WMA)
yMaximum les: 2,000
yMaximum folders: 200
yFile extensions: “.mp3”/ “.wma”
yCertain MP3/WMA les may not be played
depending on the type or format of the le.
Compatible USB Devices
yMP3 Player : Flash type MP3 player.
yUSB Flash Drive :
Devices that support USB2.0 or USB1.1.
yThe USB function of this unit does not support all
USB devices.
USB device requirement
yDevices which require additional program
installation when you have connected it 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 minute to be searched.
yTo prevent data loss, back up all data.
yIf you use a USB extension cable or USB hub, the
USB device is not recognized.
yUsing NTFS le system is not supported.
(Only FAT (16/ 32) le system is supported.)
yThis unit recognizes up to 2,000 les.
yExternal HDD, Card readers, Locked devices, or
hard type USB devices are not supported.
yUSB port of the unit cannot be connected to PC.
The unit cannot be used as a storage device.
ySome USB may not work with this unit.

Getting Started
8
Getting Started
1
Top panel
aSIDE A/1
USB 1 Port
You can play sound les by connecting the USB device.
DJ SCRATCH / SEARCH & MULTI knob (1)
- Turns clockwise or counterclockwise to make scratch
sound.
- Searches a le or folder.
- Selects lighting mode.
- Chooses a preset number.
C/ V (Skip/Search)
- Skips backward or forward.
- Searches for a section within a le.
- Selects the radio stations.
N(Play / Pause)
- Starts or pauses playback.
- Selects stereo/mono.
OK / INFO
- Selects a folder when searching a le.
- Press and hold the OK/INFO button to see
information about your music. An MP3 le often
come with ID3 tag. The tag gives the Title, Artist,
Album or Time information.
- Press and hold the OK/INFO button to see Bluetooth
device name of the unit in BLUETOOTH READY.
- Press and hold the OK/INFO button to see the name
of connected all Bluetooth device in Bluetooth mode.
SEARCH
Searches to the next/prevoius le or next/prevoius
folder by pressing SEARCH repeatedly. (USB 1 only)
DJ LOOP
Selects DJ LOOP mode (USB 1 only).
(DJ LOOP mode can use during USB playback.)
bPRESET
Press to store /search / delete radio stations.
(Chooses a preset number of a radio station with
DJ SCRATCH / SEARCH & MULTI knob.)
cH/P MODE
Press to select a headphone monitor mode.
dANTENNA (FM)
eH/P VOLUME
Adjusts headphone’s volume.
f<(Headphone) jack
PORT. (Portable) IN jack
g1(Standby)
Turns the power on or off.
hUSB REC / DEMO
- Records to USB.
- To stop Recording, press and hold for 3 seconds.
- In power off status, if you press USB REC / DEMO,
show DEMO mode.
iLIGHTING
- Selects the lighting effects.
- Press and hold to turn on / off the Flash Lighting.
j/ CLUB, / DRUM, / USER (DJ PRO)
Selects CLUB, DRUM or USER sound effect to mix.
(If you want to use USER, you have to register a source
with “Music Flow Bluetooth” app.)
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Getting Started
9
Getting Started
1
1, 2, 3, 4, 5, 6, 7, 8 (DJ PRO PAD)
Press a desired sound pad.
kDJ EFFECT LEVEL
Selects a desired DJ EFFECT LEVEL
BASS / MIDDLE / TREBLE (USER EQ)
Selects the sound effect created by your own.
l Display window
mAUTO DJ / REPEAT
Selects the AUTO DJ mode or listens to the les
repeatedly or randomly.
nF (Function)
Selects the function and input sources.
Input source / Function Display
USB USB 1 / USB 2
Portable input PORTABLE
Bluetooth BLUETOOTH
LG Sound Sync (Wireless) LG TV
Radio RADIO (FM)
o3WIRELESS LINK
- Selects MAIN or OTHER on WIRELESS PARTY LINK
mode.
- Enable or disable WIRELESS PARTY LINK mode.
pCHARGE
Battery charging indicator
qMIC (Microphone) 1 / 2 jack
rMIC (Microphone) VOLUME
Adjusts microphone volume.
sECHO
Selects ECHO mode.
tVOCAL EFFECTS
Selects VOCAL EFFECTS mode.
uVOICE CANCELLER
You can reduce the vocal tones during music playback
from various input sources.
vSIDE B/2
USB 2 Port
- You can play sound les by connecting the USB
device.
- You can charge the mobile device through this port.
yThe mobile device can be charged only in standby
mode.
ySome of the mobile devices may not be charged.
, Note
DJ SCRATCH / SEARCH & MULTI knob (1)
- Turns clockwise or counterclockwise to make scratch
sound.
- Searches a le or folder.
- Selects lighting mode.
- Chooses a preset number.
C/ V (Skip/Search)
- Skips backward or forward.
- Searches for a section within a le. (USB 2 only)
N(Play / Pause)
Starts or pauses playback. (USB 2 only)
OK / INFO
- Selects a folder when searching a le.
- Press and hold the OK/INFO button to see
information about your music. An MP3 le often
come with ID3 tag. The tag gives the Title, Artist,
Album or Time information.
- Press and hold the OK/INFO button to see Bluetooth
device name of the unit in BLUETOOTH READY.
- Press and hold the OK/INFO button to see the name
of connected all Bluetooth device in Bluetooth mode.
SEARCH
Searches to the next/prevoius le or next/prevoius
folder by pressing SEARCH repeatedly (USB 2 only).
DJ LOOP
Selects DJ LOOP mode (USB 2 only).
(DJ LOOP mode can use during USB playback.)
wMIX
Mixes audio sound.
xTEMPO A / B
Adjusts TEMPO in USB function.
MASTER VOL.
Adjusts speaker volume.
yCROSS FADER
Adjusts the sound volume of mixing les when using
MIX on by pressing the MIX.
zSOUND EFFECT / BASS BLAST
- Chooses sound impressions.
- Press and hold to select BASS effect directly.
DJ EFFECT
Selects a desired DJ EFFECT.
USER EQ
Selects the sound effect created by your own.
KEY CHANGER
Changes the key to suit your vocal range.
1AUTO SYNC
When using MIX, you can synchronize the tempo of
audio les being played in USB 1 and USB 2 by pressing
AUTO SYNC.

Getting Started
10
Getting Started
1
Rear panel
aAC in socket
Fully charge the device before using.
, Note
bBattery ON / OFF switch
Switches the battery ON or OFF
(Battery can be charged even when this unit is in
off (OFF) status.)
a b