background image

Resetting

In case that the unit freezes due to malfunction, remove the 
rubber sleeve and press the reset hole using an object like a 
thin pin. Then the unit is turned off completely.

Notice for using this Unit

Bluetooth

 

y

You can connect this unit with up to 3 bluetooth device simultaneously same 
method. 

 

y

The multi pairing connection is only supported on Android or iOS devices. 
(Multi pairing connection may not be supported depending on the connected 
device specifications.) 

 

y

Removable/detachable bluetooth device (Ex : Dongle etc..) does not supported 
multi pairing. 

 

y

Even if this unit connected up to 3 bluetooth devices, you can play and control 
music by using only one of the connected devices.

Dual Play

 

y

If you use a bluetooth device using dongle, you cannot use Dual Play.

 

y

In portable input mode, you cannot use Dual Play. 

 

y

When you enjoy Dual Play, the multi pairing connection is not supported.

 

y

When you enjoy Dual Play, the function cannot be changed. 

 

y

When Dual Play connection is on processing, you cannot search the units on 
other bluetooth devices. 

 

y

When you disconnect Dual Play connection, press and hold the buttons  

 speaker :

 / 

 speaker :

)

 again.

 

y

When you enjoy Dual Play, you can adjust the volume of both 

 and 

 

speakers at the same time.

 

y

When connecting Dual Play, bluetooth devices connected to 

 speaker are 

disconnected and those connected to 

 speaker are disconnected except for 

the last connected device.

 

y

Using Dual play is limited to only these units and is unavailable on other Music 
Flow series.

 

y

To change the bluetooth device in Dual Play mode, press and hold 

 for 

2 seconds to disconnect current bluetooth device and connect the desired 
bluetooth device.

 

y

In Dual Play mode, you can connect only the 

 speaker with the bluetooth 

device.

 

y

Dual Play is only supported on Android or iOS devices.

LG Sound Sync

 

y

When the connections failed, make sure of the conditions of this unit and your 
TV : power, function and etc.

 

y

If you turn off and on the TV, you must set LG Sound Sync connection again.

 

y

This unit recognizes input signals such as Bluetooth and LG Sound Sync and 
then changes suitable function automatically.

Notice for Auto Power Off

When the unit is in BT/LG Sound Sync mode without music playback for 20 minutes or 
in portable input mode without button operation for 6 hours, this unit is turned off 
automatically.

How to disconnect the wireless network 

connection or the wireless device.

Turn off the unit.

Specification

Power Supply:

 

 

-

5 V 

0

 2.0 A (AC Adapter)

 

-

Built-in rechargeable battery

Power consumption:

 

 

-

10 W 

AC Adapter:

 

 

-

Model: WB-10A05FU 

 

-

Manufacturer: Yang Ming Industrial

 

-

Input: AC 100 - 240 V, 50/60 Hz

 

-

Output: 5 V 

0

 2.0 A

Dimensions (W x H x D):

 

Approx.  

184 mm x 55 mm x 63 mm (7.2” x 2.2” x 2.5”)

Net Weight:

 

Approx. 0.7 kg (1.56 lb)

Operating Temperature:

 

5 °C to 35 °C (41 °F to 95 °F)

Operating Humidity:

 

5 % to 60 %

External Connector:

 

 

-

ø 3.5 mm mini jack

 

-

Micro USB port for charging battery

Communication:

 

Bluetooth

Amplifier:

 

 

-

10 W + 10 W (4 Ω at 1 kHz)

 

-

THD: 10%

Speaker: 

 

-

Type : Built-in

 

-

Impedance Rate : 4 Ω

 

-

Rated Input Power : 10 W

 

-

Max. Input Power : 20 W

Battery :

 

 

-

Battery capacity : 2600 mAh

 

-

Operating time is approx. 8 hours. (Based on 30% volume, 1kHz signal, 400 mV 
portable input and fully charged status) It may vary depending on the battery 
status and operational conditions.

 

y

Design and specifications are subject to change without notice.

Troubleshooting

No power

 

y

The battery is discharged. Recharge the battery.

 

y

Connect the unit to the power supply with the AC adapter.

No sound or sound distortion

 

y

The unit or your smart device’s volume is set to minimum. Check and adjust the 
volume of the unit or bluetooth device’s volume.

 

y

When you use an external device at high volume, the sound quality may be 
deteriorated. Lower the volume of the devices.

 

y

If you use the unit for purposes other than listening to music, the sound quality may 
be lowered or the unit may not work properly.

Bluetooth pairing does not work well.

 

y

Switch bluetooth off and on again on your bluetooth device, then try pairing again.

 

y

Be sure your bluetooth device is on.

 

y

Remove the obstacle in the path of the bluetooth device and the unit.

 

y

Depending on the type of the bluetooth device or surrounding environment, your 
device may not be paired with the unit.

 

y

While using Bluetooth, you may not be able to activate Music Flow Bluetooth 
app. Disconnect Bluetooth device you have connected before to use Music Flow 
Bluetooth app properly.

 

y

When your Bluetooth device have been already connected with other unit, 
disconnect the Bluetooth connection first. Then you can control your unit through 
Music Flow Bluetooth app.

 

y

Depending on the Bluetooth device, Music Flow Bluetooth app may work 
restrictively not work.

 

y

The connection you’ve made may be disconnected if you select other application 
or change the setting of the connected device via Music Flow Bluetooth app. In 
such case, please check the connection status.

The unit does not operate normally.

 

y

If the battery was fully discharged, the stored bluetooth information can be deleted.

 

y

Previous setting may not be saved when the unit’s power is shut off.

 

y

In case of malfunction, 

 LED indicator is lit in red and white alternately. Please 

use the unit in proper place where the temperature or humidity is not so high or 
low. If this problem is unsolved, contact LG Electronics customer care center.

 

y

In case of overload, all LED indicators stay white. Please turn the power off and then 
on again.

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 flash 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 sufficient 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: 

 

y

To prevent fire or electric shock hazard, do not expose this product to rain or 
moisture.

 

y

Do not install this equipment in a confined space such as a book case or similar 
unit.

 

y

This unit contains magnets which can be harmful to some kind of object ( Ex :

 

y

Magnetic card, Pacemaker etc..).

 

y

This product contains chemicals known to the State of California to cause 
cancer and birth defects or other reproductive harm. 

Wash hands after 

handling. 

CAUTION: 

 

y

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 shall 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.

 

y

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

 

y

No naked flame sources, such as lighted candles, should be placed on the 
apparatus. 

 

y

Internal lithium battery in the unit should not be replaced by user because of 
danger of explosion if battery is incorrectly replaced ,and must be replaced with the 
same type battery by expert.

 

y

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. If you do not use 
supplied adapter, charging is unavailable or charging time may differ.

 

y

To avoid fire or electric shock, do not open the unit. Contact to qualified personnel 
only.

 

y

Do not leave the unit in a place near the heating appliances or subject to direct 
sunlight, moisture, or mechanical shock.

 

y

To clean the unit, 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 unit.

 

y

Do not use volatile liquids such as insecticide spray near the unit. Wiping with 
strong pressure may damage the surface. Do not leave rubber or plastic products in 
contact with the unit for a long period of time.

 

y

Do not place the unit over the vehicle’s air bag. When the air bag deploys, it may 
result in injury. Before using in the car, fix the unit.

 

y

Do not use the handsfree function during driving a car.

 

y

Do not leave the unit on an unstable place such as high shelves. It may fall down 
because of the vibration of the sound.

 

y

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

CAUTION when using this product in environments of low humidity

 

y

It may cause static electricity in environments of low humidity.

 

y

It is recommended to use this product after touching any metal object which 
conducts electricity.

CAUTION concerning the Power Cord

Most appliances recommend they be placed upon a dedicated circuit; 
That is, a single outlet circuit which powers only that appliance and has no additional 
outlets or branch circuits. Check the specification page of this owner’s manual to be 
certain. 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 fire. Periodically 
examine the cord of your appliance, and if its appearance indicates damage or 
deterioration, unplug it, discontinue use of the appliance, 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 appliance. To disconnect power from the mains, pull out the 
mains cord plug. When installing the product, ensure that the plug is easily accessible.
This device is equipped with a portable battery or accumulator. 

Safety way to remove the battery or the battery from the equipment: 

Remove 

the old battery or battery pack, follow the steps in reverse order than the assembly. 
To prevent contamination of the environment and bring on possible threat to human 
and animal health, the old battery or the battery put it in the appropriate container at 
designated collection points. Do not dispose of batteries or battery together with other 
waste. It is recommended that you use local, free reimbursement systems batteries and 
accumulators. The battery shall not be exposed to excessive heat such as sunshine, fire 
or the like.

NOTICE:

 For safety making information including product identification and supply 

ratings, please refer to the main label on the bottom of the apparatus.

IMPORTANT SAFETY 

INSTRUCTIONS

1.  Read these instructions. 
2.  Keep these instructions.
3.  Heed all warnings. 
4.  Follow all instructions. 
5.  Do not use this apparatus near water. 
6.  Clean only with dry cloth. 
7.  Do not block any ventilation openings. Install in accordance with the 

manufacturer’s instructions.

8.  Do not install near any heat sources such as radiators, heat registers, stoves, or 

other apparatus (including amplifiers) that produce heat. 

9.  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 fit into 
your outlet, consult an electrician for replacement of the obsolete outlet.

10.  Protect the power cord from being walked on or pinched particularly at plugs, 

convenience receptacles, and the point where they exit from the apparatus.

11.  Only use attachments/accessories specified by the manufacturer.
12.  Use only with the cart, stand, tripod, bracket, or table 

specified 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.

13.  Unplug this apparatus during lightning storms or when 

unused for long periods of time.

14.  Refer all servicing to qualified service personnel. Servicing 

is required when the apparatus has been damaged in any 
way, such as 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.

FCC Compliance Statement

This device complies with part 15 of the FCC rules. Operation is subject to the 
following two conditions: 
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that 

may cause undesired operation.

NOTE:

 This equipment has been tested and found to comply with the limits 

for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits 
are designed to provide reasonable protection against harmful interference in 
a residential installation. This equipment generates, uses, and can radiate radio 
frequency energy and, if not installed and used in accordance with the instructions, 
may cause harmful interference to radio communications. However, there is no 
guarantee that interference will not occur in a particular installation. 
If this equipment does cause harmful interference to radio or television reception, 
which can be determined by turning the equipment off and on, the user is 
encouraged to try to correct the interference by one or more of the following 
measures: 

 

y

Reorient or relocate the receiving antenna.

 

y

Increase the separation between the equipment and receiver.

 

y

Connect the equipment into an outlet on a circuit different from that to which 
the receiver is connected.

 

y

Consult the dealer or an experienced radio/TV technician for help. 

CAUTION:

 Any changes or modifications not expressly approved by the party 

responsible for compliance could void the user’s authority to operate this 
equipment.

FCC WARNING: 

This equipment may generate or use radio frequency energy. 

Changes or modifications to this equipment may cause harmful interference 
unless the modifications are expressly approved in the instruction manual. The user 
could lose the authority to operate this equipment if an unauthorized change or 
modification is made.

FCC RF Radiation Exposure Statement : 

This equipment complies with FCC 

radiation exposure limits set forth for an uncontrolled environment. This equipment 
should be installed and operated with minimum distance 20 cm between the 
radiator and your body. End users must follow the specific operating instructions 
for satisfying RF exposure compliance. This transmitter must not be co-located or 
operating in conjunction with any other antenna or transmitter.

CAUTION:

 Regulations of the FCC and FAA prohibit airborne operation of radio-

frequency wireless devices because their signals could interfere with critical aircraft 
instruments.

Responsible Party :

LG Electronics USA, Inc.1000 Sylvan Avenue  
Englewood Cliffs, NJ 07632  
TEL. : +1-800-243-0000

LG Customer Information Center

1-800-243-0000

 

USA, Consumer

1-888-865-3026

 

USA, Commercial

Register your product Online!

www.lg.com

NP7550-B0.BUSALLK_SIM_MFL68880410.indd   2

2014-12-26     2:23:41

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