Jbl WR2.4 User Manual

JBL® Wr2.4

Wireless Rechargable Headphones

quIck-StArt GuIdE

IntroductIon

These 2.4 GHz digital wireless
headphones use the latest digital
wireless technology, so you can enjoy
crystal-clear stereo music and TV
sound anywhere inside your home.
Simply connect the transmitter to your
portable device, TV set or other audio
source. Without complicated wiring
and installation, the system enables
you to enjoy thrilling, lifelike sound in
minutes. Please take a few minutes

to carefully read the instructions
below before operating your
headphones.

coMPonEnt
PArt LISt (FIG. A)

HEADPHONE RECEIVER

1. Signal link LED

2. Volume Up (+) and Down (-) Control

3. Power LED

4. Power button

5. Charging contacts

TRANSMITTER

6. Power/Signal LED

7. Charge LED

8. Charging pins

9. Attenuation (ATT) select switch
(0dB and -8dB)

10. RCA Audio In sockets

11. DC IN socket

ACCESSORIES

12. Audio cable

13. NMH AAA size batteries for

Headphone (2 pieces)

14. AC/DC adaptor

connEctIonS (FIG. B)

TRANSMITTER

1. Connect the supplied AC/DC power
adaptor to an AC wall outlet.

2. Connect the AC/DC power adaptor
cable to the DC jack located on
the rear of the transmitter. The red
Power/Audio Signal LED starts to

ash for approximately 6 seconds.

3. Connect the supplied audio cable
to the transmitter’s RCA Audio In
sockets. Connect the other end of
the cable to the audio output jack
of your portable device, TV or other
audio source. If your audio source
does not have a 3.5mm output
connector you may need to acquire
another cable (not included).

4. For TV/VCR/DVD/Hi-Fi sources, set
the ATT switch to -8dB. For portable
device sources, set the ATT switch
to 0dB

Turn on and begin playing your audio
source; the transmitter will automatically
switch on and the red Power/Signal
LED will light red when it receives an
audio signal.

HEADPHONE RECIEVER

1. To install or replace the rechargeable
batteries, carefully rotate the Right-
Hand Side (R)
Ear Pad counter-clockwise and
remove it. (Fig. C)

2. Insert the two supplied AAA
size rechargeable batteries into
the battery compartment of the
headphone housing, observing the
correct polarity.

3. After inserting the batteries, restore
the Ear Pad to the headphone
housing, according to the indication
of the arrow marking.

oPErAtIon

TRANSMITTER

Turn on the audio source to which the
transmitter is connected. The Power
/ Signal LED (6) on the transmitter
will light red when it receives an audio
signal.

HEADPHONE RECEIVER

1. Turn on the headphones by

pressing the Power button (4) for

approximately 1 second. The red

Power LED (3) will light up, and the
green LED (1) will be ashing. When

the signal link between transmitter
and receiver is established, the
green LED (1) will light up steadily.

2. Place the headphones on your head.
To obtain the desired sound level,
adjust the volume control (2) on the
headphones.

3. If interference or poor signal
reception occurs when out of range
of the transmitter, the headphones
will mute and the green LED (1)
will turn off. Move closer to the
transmitter.

4. When the headphone batteries are
at low level, the Power Red LED
(3) blinks. There will be a beeping
sound in each minute for the last 5
minutes. After that, the headphones
will switch Off automatically.

5. To charge the headphone batteries,
turn the headphones OFF by pressing
the Power button (4) for about 1
second. Place the headphones on
the transmitter’s charging cradle.
The charging process begins
automatically, and the Charge green

LED (7) will blink when the charging
contacts of the transmitter (8)

and headphones (5) make proper
contact. When the charging process
is completed, the Charge green

LED (7) will light up steadily.

NOTE: For the initial use, please
charge the batteries for 7 hours.
To ensure a long service life, fully
charge the batteries before using the

headphone for the rst time. If the

headphones are not in use, please
store them on the transmitter’s
charging cradle. (Fig. D)

IMPORTANT

1. Switching Off

a) To protect the transmitter and

conserve power, the transmitter
will switch off automatically if
there is no audio source signal

for approximately 3 minutes. If

the audio source signal returns,
the transmitter will automatically
switch on. To listen, press the
headphones’ Power button again

for approximately 1 second.

b) The headphones will automatically

switch off if they receive no signal
from the transmitter for 3 minutes.

2. Make sure the headphones are
turned off when charging is in
process.

3. Use only the rechargeable AAA
batteries supplied with the
headphones. When the headphones
are not in use, turn the headphones
OFF.

4. Ensure the charging socket located
on the right headphone housing
connects securely with the charging
prongs on the transmitter cradle.
According to the capacity of the
included rechargeable batteries, the
battery charging process will take

approximately 5 to 7 hours.

This device must be used with the AC/
DC adaptor supplied in the package.

WArnInG

• Never attempt to recharge

conventional dry cell batteries.

• Batteries (battery pack or batteries
installed) shall not be exposed to
excessive heat such as sunshine, re

or the like.

• Never use another type of battery or

non-rechargeable batteries to replace
the supplied rechargeable (LR03/
AAA) batteries

• Excessive sound pressure from

earphones and headphones can
cause hearing loss.

• Before charging the headphones

batteries, always make sure that the
batteries in the headphones are the
rechargeable types.

• Dispose of spent dry or rechargeable

batteries conforming to local waste
disposable rules. Never throw

batteries into re.

• Operate the transmitter with the

supplied 5V DC, 550mA AC/DC
adapter only. Check that the AC
voltage stated on the AC/DC adapter
is the same as that available in your
country. Using the transmitter with a
different AC/DC adapter makes the
warranty void.

• Always switch the headphones OFF

after use.

• Never try to open the headphone or

transmitter case. Refer servicing to

qualied service personnel only.

• Never use alcohol, petroleum-based

cleansers, or paint thinners to clean
the headphones or transmitter.

• Use the equipment for the

applications described in this manual
only. JBL cannot accept any liability
for damages resulting from improper
handling or misuse.

• Do not subject this equipment to

any environments where drops or
splashes can make contact with
the equipment and make sure that

no objects lled with water, such as

vases, are placed on the equipment.

• This equipment is fully disconnected

from the mains power by pulling the
mains plug out of the wall outlet. The
power disconnect procedure must
be easily accessible.

• The mains plug on the mains cable

must always be ready to use.

trouBLESHootInG

NO SOUND

• Ensure the AC/DC adaptor is fully

inserted into the AC outlet and the
power connection input on the
transmitter.

• Ensure you’ve inserted the batteries

correctly.

• Ensure the headphones are switched

ON.

• Headphone battery charge level

may be too low, fully recharge the
batteries.

• Ensure that the connected audio

source device is switched ON and
is playing.

• The volume of the headphones may

be too low. Increase the volume of
the audio source.

DISTORTION

• Ensure the volume level of the

headphones is set to an appropriate
level.

• If the headphones are too far from the

transmitter, move them closer.

• If the audio signal input level is too

low. Increase the volume of the audio
source.

INTERFERENCE

• If you encounter inference from WLAN

systems, Bluetooth devices or other

2.4GHz systems we recommend
moving the transmitter away from the
other device / system.

• Your JBL WR2.4 scans for a free

frequency slot each time you plug
in the power cable into the DC jack
of the transmitter. If an additional

2.4GHz source appears after you
initially set up your WR2.4, we
recommend that you unplug the
power cable for 1 minute and
then re-connect it to allow a new
frequency scan.

tEcHnIcAL
SPEcIFIcAtIonS

Transmission Mode: UHF Stereo

Carrier Frequency: 2.4GHz Digital

Operation Voltage:

Transmitter: DC 5V 550mA
Headphone: 2 x AAA size

rechargeable NiMH batteries
(included)

Frequency Response: 18Hz- 20kHz

S/N Ratio: 75dB

Operating Distance: typically 20

meter/ 65 ft

FCC STATEMENT

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 with one or more of
the following measures:

• Readjust or distance the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to

which the receiver is connected.

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

Shielded cables and I/0 cords must be used or this equipment. Changes

or modications not explicitly proved in writing by JBL may make the user’s

authority to operate this equipment void. 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.

JBL hereby declares that the WR2.4 headphones comply with the essential requirements
and othe r releva nt provi sions of D irecti ve 1999/5/EC. To orde r your fre e copy of ou r
Declaration of Conformity, please visit http://www.jbl.com. or contact [e-mail].

HARMAN International Industries, Incorporated
8500 Ba lboa Bo ulevard, North ridge, CA 91329 USA

© 2013 HARMAN In ternational In dustr ies, Inc orpor ated. All r ights re ser ved. JBL is a
tradem ark of HA RMAN In ternati onal In dustri es, Inc orpor ated, registered i n the Uni ted
States a nd/or othe r countries.

The Bluetooth® word mar k and log os are registere d trademarks ow ned by Blu etooth SIG,
Inc., and an y use of suc h marks by H ARMAN I nterna tional I ndustr ies, In corpo rated, is
under l icens e. Other tradem arks an d trade na mes are th ose of the ir resp ective o wners.

All Rig hts Rese rved. Features, specifications and appearance are subject to change
without notice.

Part No. JBLP5356 Rev: A

www.jbl.com