LG NP1540B User manual

OWNER’S MANUAL
Please read this manual carefully before operating your set and retain
it for future reference.
WIRELESS SPEAKER
NP1540B / NP1540BP
NP1540W / NP1540WP
www.lg.com
ENGLISH

2
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 su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:
yTo prevent re or electric shock
hazard, do not expose this product to
rain or moisture.
yDo not install this equipment in a
conned space such as a book case
or similar unit.
CAUTION:
yThe 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.
yNo naked ame sources, such as
lighted candles, should be placed on
the apparatus.
yInternal 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.

3
yTo avoid re or electric shock, do not
open the unit. contact to qualied
personnel only.
yDo not leave the unit in a place near
the heating appliances or subject
to direct sunlight, moisture, or
mechanical shock.
yTo 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.
yDo 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.
yDo 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, x the unit.
yDo not leave the unit on an unstable
place such as high shelves. it may fall
down because of the vibration of the
sound.
CAUTION: Do not remove battery
incorporated with product for your safety.
If you need to replace the battery, take it
to the nearest authorized LG Electronics
service point or dealer for assistance.
CAUTION when using this product in
environments of low humidity.
yIt may cause static electricity in
environments of low humidity.
yIt is recommended to use this
product after touching any metal
object which conducts electricity.
NOTICE: For safety making information
including product identication and
supply ratings, please refer to the main
label on the bottom of the apparatus.

4
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 ampliers)
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 t 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
specied by the manufacturer.

5
12. Use only the cart, stand, tripod,
bracket, or table specied by
the manufacturer, or sold with
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 qualied 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.

6
Overview
-
T
1
+
Dual pairing LED
& PORT. IN LED
Volume -
Volume +
Play / Pause
Power on / o
& Charging LED
Bluetooth LED
[Front]
L-MONO-R CHARGE PORT. IN
Speaker mode switch
(Left / Mono / Right)
Portable input
connector
Micro USB port
for charging
[Rear]

7
LED Indicator
Status LED
Battery low 1/ Red / Blinking
Charging 1/ Red / Staying
Charged 1/ O
Turn on or / Red / Staying
Turn o / O
Ready for single pairing / Red / Blinking
Single paired & Ready to play / Red / Staying
Ready to detect each other / Red / Blinking
/ Red / Blinking
Paired each other &
Ready for dual pairing
/ Red / Blinking (L speaker only)
/ Red / Staying
Dual paired &
Ready to play
/ Red / Staying
/ Red / Staying

8
L-MONO-R CHARGE
PORT.IN
CHARGE Charging LED
for battery status
yCharging : Red
yCharged : O
Charging time
yAbout 3 hours
yThe battery can last up to 5 hours. (Based on 30 % volume, 1 kHz
signal, 600 mV portable input and fully charged status)
yWhen the battery is low, the beep sound is heard in Bluetooth
mode.
yCharging the unit using the PC takes longer time.
yTo prevent electric shock, handle with care during charging.
yAvoid high or low temperature or humidity.
yAC adaptor is not supplied.
yThis unit must always be operated with DC 5 V. certied/listed
adaptor which complies with LPS.
yDo not use the adaptor higher than DC 5 V.
[Note]
Charging

9
b
-
T
1
+
T
1
Press and hold to turn on. The unit
goes into the pairing mode.
a
L-MONO-R CHARGE PORT.IN
L-MONO-R
C
Before turning on the unit, move
the mode switch to MONO.
Bluetooth Connection

10
c
Select “LG BT Box (XX:XX)”on your
Bluetooth device. (XX:XX means the
last four digits of BT address.)
d
-
T
1
+
After pairing, the voice notication is
heard and Bluetooth LED stays turned
on. If the unit fails to pair, go to step 1
and try again.
Bluetooth Connection

11
e
z
Play the desired music on the Bluetooth device. After
pairing, you can control playback using the buttons
on the front of the unit.
yOnce pairing is performed, it does not need to be done again even
if you turn o this unit.
yTo unpair the Bluetooth device, press and hold Ton the front of
the unit for 3 seconds. The unit is unpaired.
[Note]
Bluetooth Connection

12
a
Before turning on the unit, move
the each speaker’s mode switch to
L and R.
L-MONO-R CHARGE PORT. IN
L-MONO-R
C
L-MONO-R CHARGE PORT. IN
L-MONO-R
C
b
Press and hold to turn on. The two
speakers begin to detect each other
automatically. It takes about 45 seconds
but can be longer depending on use
environment.
-
T
1
+
T
1
-
T
1
+
T
1
Within 5 m
Dual Speaker Connection
* Two speakers are needed to enjoy in stereo.

13
c
-
T
1
+
After detecting, beep sound is
heard and dual pairing LED stays
turned on. the unit goes into the
pairing mode. If the units fail to
detect, go to step 1 and try again.
d
Select “LG BT Box 2 (XX:XX)”on your
Bluetooth device.
Dual Speaker Connection

14
e
After pairing, the voice
notication is heard and the
Bluetooth LED stay turned
on. If the unit fails to pair, go
to step 1 and try again.
-
T
1
+
f
z
Play the desired music on the Bluetooth device.
After pairing, you can control playback using
the buttons on the front of the unit.
Dual Speaker Connection

15
Portable Input Connection
b
-
T
1
+
T
1
Press and hold to turn on.
PORT. IN LED stays turned
on.
a
Connect the unit to the external
device using PORT. IN cable.
L-MONO-R CHARGE PORT.IN
PORT. IN
<

16
c
Play the desired music on the device
connected to the unit. While the unit is
connected with PORT. IN cable, Tin
the front of the unit does not work.
z
Portable Input Connection

17
Additional Information
yThe operating time on battery is subject to battery status, operational status
and environment conditions.
yThe Bluetooth connection can be disconnected in case that the distance
between the unit and your Bluetooth device is more than the Bluetooth
range limitation.
yThis unit is turned o automatically in case that any button is not pressed or
any input source is not connected for 20 minutes in Bluetooth mode.
yPORT. IN cable (ø 3.5 mm mini stereo cable) is not supplied.
yWhile using PORT. IN connection, Bluetooth connection is unavailable.
yWhile using PORT. IN connection, stereo mode using extra speaker is
unavailable.
yWhen you disconnect PORT. IN connection, previous Bluetooth connection is
repaired to the unit automatically.
yDepending on the type of the Bluetooth device, some devices have a
dierent way of pairing.
yThe sound may be interrupted when the connection is interfered by the
other electronic wave.

18
yIn case that there are obstacles between your Bluetooth device and the unit,
the device cannot be connected even though the distance between both is
less than the Bluetooth range limitation.
yWhen you use dual speaker connection, keep the distance between the
units closer than Bluetooth range limitation. If the distance between the
units is more than the Bluetooth range limitation, the units can be turned o
automatically.
yThe electrical malfunction due to the devices using same frequency such as
medical equipment, microwaves or wireless LAN devices, may make the unit
disconnected.
yThe sound notication function is available in Bluetooth mode only.
yBluetooth connection using the PC or dongle is not supported.
Additional Information

19
Specication
Power Supply
y5 V 02 A
yBuilt-in rechargeable battery
Power Consumption
y2.5 W
Dimensions (W x H x D)
yApprox. 83 mm x 95 mm x 83 mm
Net Weight
yApprox. 370 g
Operating Temperature
y0 °C to 35 °C
Operating Humidity
y5 % to 60 %
External Connector
yø 3.5 mm mini jack
yMicro USB port for charging battery
Communication
yBluetooth 3.0
Speaker
yType : Built-in
yImpedance Rate : 4 Ω
yMax. Output Power : 2.8 W
yTHD: 10%
yDesign and specications are subject to change without notice.

20
No power
yThe battery is discharged. Recharge
the battery.
yConnect the unit to the power
supply with the AC adapter.
No sound or sound distortion
yThe unit or your Bluetooth device’s
volume is set to minimum. Check
and adjust the volume of the unit or
Bluetooth device’s volume.
yWhen you use an external device at
high volume, the sound quality may
be deteriorated. Lower the volume
of the devices.
yIf you use the unit for purposes other
than listening to music, the sound
quality may be lowered or the unit
may not work properly.
yIf the unit does not work well in
Bluetooth mode, switch Bluetooth
o and on again on your Bluetooth
device.
Bluetooth pairing does not work well.
ySwitch Bluetooth o and on again
on your Bluetooth device, then try
pairing again.
yBe sure that your Bluetooth device is
on.
yRemove the obstacle in the path of
the Bluetooth device and the unit.
yDepending on the type of the
Bluetooth device or surrounding
environment, your device may not
be paired with the unit.
Troubleshooting