LG RK4 Owner's Manual
OWNER’S MANUAL
MFL70041967
HIGH POWER
SPEAKER
SYSTEM
Please read this manual carefully before operating your set and
retain it for future reference.
MODEL
RK4
www.lg.com
Copyright © 2019 LG Electronics Inc. All Rights Reserved.
1905_Rev01
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.
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
conned 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: 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 enclosure that may be of
sufcient 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.
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 builtin 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 identication and supply ratings, please refer
to the main label on the bottom or the other surface
of the product.
Getting Started 3
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 specication 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.
Symbols
~
0
1
!
Refers to alternating current (AC).
Refers to direct current (DC).
Refers to class II equipment.
Refers to stand-by.
Refers to “ON” (power).
Refers to dangerous voltage.
1
Getting Started
Table of Contents4
Table of Contents
1 Getting Started
2 Safety Information
6 Unique Features
7 Playable file Requirement
7 – Music file requirement
7 – Compatible USB Devices / SD cards
7 – USB device / SD card requirement
8 Rear panel
10 Carrying the unit
2 Connecting
11 Connecting the AC Adapter
12 Use of Tripod
14 Optional Equipment Connection
14 – LINE IN Connection
14 – LINE OUT Connection
15 – USB Connection
15 – SD card Connection
3 Operating
16 Basic Operations
16 – USB/SD Operations
16 Using BLUETOOTH® wireless technology
16 – Listening to music stored on the Bluetooth
devices
18 Other Operations
18 – Using Microphone
18 – Adjusting the ECHO volume
18 – Setting the USER EQ
18 – LIGHTING
4 Troubleshooting
19 Troubleshooting
19 – General
5 Appendix
20 General specifications
21 Maintenance
21 – Handling the Unit
21 Trademarks and Licenses
Table of Contents 5
1
2
3
4
5
Getting Started6
Unique Features
Bluetooth®
1
Listens to music stored on your Bluetooth device.
Getting Started
Carrying the unit
This unit have wheels and handle for carrying. You
can easily carry the unit.
Getting Started 7
Playable file Requirement
Music file requirement
MP3 le compatibility with this unit is limited as
follows.
y Sampling frequency :
y Bit rate : within 32 to 320 kbps
y Maximum les : 999
y Maximum folders : 999
y File extension : “.mp3”
y Certain MP3 les may not be played depending on
the type or format of the le.
within 32 to 48 kHz
Compatible USB Devices / SD cards
yMP3 Player : Flash type MP3 player.
y USB Flash Drive :
Devices that support USB2.0 or USB1.1.
y SD card : SD, SDHC
y The USB / SD function of this unit does not
support all USB devices and SD cards.
USB device / SD card requirement
y Devices which require additional program
installation when you have connected it to a
computer, are not supported.
y Do not extract the USB device / SD card while in
operation.
y For a large capacity USB or SD card, it may take
longer than a few minute to be searched.
y To prevent data loss, back up all data.
y If you use a USB extension cable or USB hub, the
USB device is not recognized.
y Using NTFS le system is not supported.
(FAT(16 / 32) and ExFAT le systems are
supported.)
y External HDD, SDD, Card readers, Locked devices,
or hard type USB devices are not supported.
y USB port of the unit cannot be connected to PC.
The unit cannot be used as a storage device.
y Some USB / SD cards may not work with this unit.
1
Getting Started
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