JBL Wr24 Manual

							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 
flash 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.
oPErA tIon
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 flashing. 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 first time.  If the 
headphones are not in use, please 
store them on the transmitter’s 
charging cradle. (Fig. d)
imPoRT
anT
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.
W ArnInG
•  Never attempt to recharge 
conventional dry cell batteries.
•   Batteries (battery pack or batteries 
installed) shall not be exposed to 
excessive heat such as sunshine, fire 
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 fire.
•   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 
qualified 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 filled 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.
JBL
®
 Wr 2.4
Wireless Rechargable Headphones
quIck-St Art GuIdE 
						

							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 
SPEcIFIcA tIonS
Transmission mode: UHF Stereo
carrier Frequency: 2.4GHz Digital
operation v oltage: 
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
HARMAN International Industries, Incorporated  
8500 Balboa Boulevard, Nor thridge, CA 91329 USA
© 2013 HARMAN International Industries, Incorporated. All rights reser ved. JBL is a 
trademark of HARMAN International Industries, Incorporated, registered in the United 
States and/or other countries. 
The Bluetooth
® word mark and logos are registered trademarks owned by Bluetooth SIG, 
Inc., and any use of such marks by HARMAN International Industries, Incorporated, is 
under license. Other trademarks and trade names are those of their respective owners.
All Rights Reser ved. Features, specifications and appearance are subject to change 
without notice.
Part No. JBLP5356 Rev: A www.jbl.com
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 Rule\
s. 
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 modifications 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 condition\
s: 
(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 other relevant provisions of Directive 1999/5/EC. To order your free copy of our 
Declaration of Conformity, please visit http://www.jbl.com. or contact [email protected].