WRKW 1000 - JBL Audio User Guide / Operation Manual. Page 2

Problem: No audio or very low volume level.
Solution:
• Check that the slide switch on the back of the

speaker is set to the correct position.

• Make certain both channels from your audio

source are connected to the inputs of the
transmitter.

• Check that the speakers are receiving power.

The LED should glow when the power switch
is pressed in.

• Make certain the Level Control on the 

transmitter is set correctly.

• The distance between your WRKW1000

transmitter and speaker(s) may be farther than
the system’s maximum range for your specific
usage and environment. See the opening
paragraph of this owner’s manual regarding
some of the many conditions that may reduce
your system’s operating range. In such
instances, you will need to use the
WRKW1000 speaker(s) in a location that is
closer to the transmitter and then repeat the
steps above.

Features & specifications.

• Two-way ported speaker system
• 4" woofer, 1-1/2" tweeter
• Adjustable slide switch that allows the 

speaker system to be used either in 
stereo or mono

• Frequency response: 40Hz – 20kHz
• Audio power: 10 Watts @ 1% THD
• Transmitter frequency: 914 – 916MHz 

(continuously adjustable)

• Transmitter operating range: up to 100 feet
• Stereo separation: better than 30dB
• Speaker dimensions (HxWxD): 

8-1/4 x 5-1/2 x 6 inches
209.6 x 139.7 x 152.4mm

• Transmitter dimensions (HxWxD): 

1-3/4 x 7 x 6-1/2 inches
44.5 x 177.8 x 165.1mm

• Power Supply: Transmitter 

(15VDC, 100mA – center pin positive)

• Power Supply: Receiver 

(12VDC, 1A – center pin positive)

ONLY USE THE JBL POWER SUPPLIES

INCLUDED WITH THE WRKW1000

• Weight: 12 lbs. per system 

What to do if your system isn’t working.

Problem: The light on the powered speaker is
always orange and, despite turning the TUNE
knob, signal cannot be locked onto.
Solution:
• Make sure that the transmitter is connected to

its AC adapter, and the adapter to a working
AC power outlet.

• To verify that the transmitter is receiving

power, increase its level control while playing
music through the system. The LED should
flash red at some point, indicating that the
transmitter is powered. Reset the control to its
original position after the test.

• Slowly adjust the tuning dial until the tuning

light glows green.

• Adjust the Frequency Selector Control on the

rear of the transmitter.

• Reposition the speakers slightly.

• The distance between your WRKW1000

transmitter and speaker(s) may be farther than
the system’s maximum range for your specific
usage and environment. See the opening
paragraph of this owner’s manual regarding
some of the many conditions that may reduce
your system’s operating range. In such
instances, you will need to use the
WRKW1000 speaker(s) in a location that is
closer to the transmitter and then repeat the
steps above.

Problem: Sound is distorted.
Solution:
• The transmitter may be getting too much

volume. Make sure that the red LED on the
transmitter only flashes brightly on loud
musical passages.

• Slowly adjust the tuning dial until the tuning

light glows green.

• Reposition the speakers slightly.

• Adjust the Frequency Selector Control on the

back of the transmitter.

• Re-adjust the TUNE knob on the powered

speaker after having performed either of the
two steps above.

• If none of the above works, you may have to

raise the physical location of the transmitter or
the receiver, or both, to clear obstacles and
then re-check the steps above.

• The distance between your WRKW1000

transmitter and speaker(s) may be farther than
the system’s maximum range for your specific
usage and environment. See the opening
paragraph of this owner’s manual regarding
some of the many conditions that may reduce
your system’s operating range. In such
instances, you will need to use the
WRKW1000 speaker(s) in a location that is
closer to the transmitter and then repeat the
steps above.

Adjust the level control on the back 
of the transmitter.

1. Turn the level control counterclockwise all 

the way.

2. Play music through your audio system while

turning this control clockwise in small incre-
ments, until the red LED on the front of the
transmitter flickers brightly only during the
loudest passages. Wait a few seconds
between changes to allow the transmitter to
recognize the new setting.

Note: If the LED doesn’t glow during the 
loudest passages or it glows all the time, the
sound may be distorted. The setting is correct
when the LED flashes brightly only during the
loudest passages.

Connect the speakers to the system.

Position the speakers where they will be used.
Play music through your audio system while
doing the following:

1. Plug the two large AC adapters into the 

DC IN jacks on the back of the speakers.

2. Turn the Volume Control to a ten o’clock 

position and the Tone Control to a twelve
o’clock position.

3. Plug the AC adapters into a wall outlet.
4. Set the slide switch located on the back of

each speaker. If both speakers are to be
used in the same room in stereo, designate
one of them as the “Left” speaker and the
other as the “Right” speaker, and set the
switches on the back accordingly. If only a
single speaker is to be used in a room, or if
both speakers are intended for use in a
monaural application, set the switch(es) in
the Mono position.

5. Push in the power switch of each speaker.

Slowly adjust the tuning knob on the front of
each speaker until the tuning light glows
green. You should then hear your program
material playing through the speakers. Fine
tune the reception by slowly turning the
tuning knob slightly to the right and to the left
for best reception. In case you cannot get
clear reception, move the speaker slightly to
the right or left until reception improves.

6. Adjust the Volume and Tone controls to the

desired listening level and enjoy your
WRKW1000s.

Note: The speakers (receivers) may require
slight re-tuning from time to time due to changes
in surrounding temperature, humidity, etc. This
is normal.

Wall-mounting your WRKW1000.

The WRKW1000 speakers may be 
wall-mounted. The customer is responsible for
proper selection and use of mounting hardware
available through hardware stores to properly
and safely wall-mount the WRKW1000. This
product is not intended for ceiling mounting.

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JBL is a registered trademark of JBL, Incorporated
Design and digital production by Harman Consumer Group
Design and Production Center, Woodbury, NY

Part No. WRKW1000OM

A Harman International Company