33-1186.fm Page 1 Tuesday, October 31, 2000 4:48 PM
900 MHz Wireless Stereo Headphones
OWNER’S MANUAL — Please read before using this equipment.
Your RadioShack Rechargeable 900 MHz
Wireless Stereo Headphones use the 900
MHz band to deliver high-quality stereo
sound to almost anywhere in or around your
home. Your headphones’ three selectable
channels, PLL (Phase-Locked Loop) circuitry
and built-in antenna give you precise tuning,
so you can enjoy your favorite sounds without disturbing others while you exercise or
work around your yard or house — up to 150
feet away from your stereo.
Power/Transmitter Indicator —
green when the AC adapter is correctly
plugged in and turns amber when the transmitter is on.
Charging Indicator —
battery is charging.
lights red when the
lights
THE FCC WANTS YOU TO
KNOW
Your headphones might cause TV or radio
interference even when they are operating
properly. To determine whether your headphones are causing the interference, turn off
the headphones. If the interference goes
away, your headphones are causing the interference.
Try to eliminate the interference by:
• moving your headphones’ transmitter
away from the receiver
• connecting your headphones’ transmitter to an outlet that is on a different electrical circuit from the receiver
• contacting your local RadioShack store
for help
If you cannot eliminate the interference, the
FCC requires that you stop using your headphones.
Warning:
unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the unit.
Notes:
• This equipment has been tested and
• Your headphones are subject to interfer-
Changes or modifications to this
found to comply with the limits for a
Class B digital device, pursuant to Part
15 of the
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.
ence from other devices, such as cordless phones, wireless speakers, and
other wireless headphones that operate
on the same frequencies. If you experience interference, try moving the headphones away from the other device.
FCC Rules.
These limits are
PREPARATION
Choosing a Location
Many factors affect the range of your system.
To achieve the best performance:
• Position the transmitter as far as possible from other electronic devices such
as TVs, receivers, or VCRs. Radio inter-
2000 RadioShack Corporation. All Rights Reserved.
©
RadioShack and RadioShack.com are trademarks
used by RadioShack Corporation.
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ference from these devices could affect
your system’s performance.
• Position the transmitter away from large
metal objects, as these could block your
transmitter’s signals.
• Try several locations for the transmitter.
Select the location that provides the best
performance.
Your system’s overall performance depends
on your home’s construction method, the other devices near the system, and other radio
frequency sources in your home (such as
cordless telephones).
Using AC Power
Use the supplied 12V, 250mA AC adapter to
connect the transmitter to AC power.
Cautions:
• You must use a Class 2 power source
that supplies 12 volts DC and delivers at
least 250mA. Its center tip must be set to
positive and its plug must fit the transmitter's
jack. The supplied adapter
DC 12V
meets these specifications. Using an
adapter that does not meet these specifications could damage the transmitter or
the adapter.
• Always connect the AC adapter to the
transmitter before you connect it to AC
power. When you finish, disconnect the
adapter from AC power before you disconnect it from the transmitter.
Plug the supplied AC adapter’s barrel plug
into the transmitter’s
DC 12V
jack, then plug
the adapter into a standard AC outlet.
Charging the Rechargeable Battery
Packs
To power the headphones, use the supplied
nickel-metal-hydride rechargeable battery
packs. There are two batteries supplied, so
you can alternately charge one and use the
other.
Your transmitter has a built-in charger to
charge the rechargeable battery pack. When
the headphones are not in use, the battery
pack can be continuously charged over several days.
Before using your headphones for the first
time, you must charge the battery pack for at
least 24 hours. If the headphones’ range decreases, you do not hear sound from the audio source, or the headphones’ POWER
indicator is blinking, recharge the batteries. It
takes 12 to 14 hours to completely recharge
the batteries.
To charge the
battery pack,
plug it into the
Charging
Portal
transmitter’s
charging portal.
The battery pack
Battery
Pack
automatically begins charging
and the
CHARGE indica-
POWER
tor lights.
When charging is complete, unplug the battery pack. The indicator turns off.
You can charge the battery pack with
Note:
the transmitter set to on or off.
Installing a Battery Pack
1. Remove the
battery compartment
cover on the
left earpiece
by pressing
the sides of
the cover
and lifting it
off.
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2. Place the battery pack in the compartment so its metal plates contact the metal
tabs inside the compartment.
3. Replace the cover.
Warning:
Dispose of old batteries promptly
and properly. Do not burn or bury them.
Caution:
When you replace the battery, use a
RadioShack replacement battery pack.
When the headphones stop operating
Note:
properly, replace or recharge the battery pack.
Connecting to an Audio Source
To connect the transmitter to your audio
source, connect one end of the supplied stereo audio cable to the transmitter’s
(red plug) and
L/AUDIO IN
(white plug) jacks.
R/AUDIO IN
Then plug the other ends into the audio
source's audio output or headphone jacks.
1. To operate the
transmitter, press
POWER
. The
power indicator
turns amber .
2. Press
POWER
to
switch the transmitter to standby.
The power indicator turns
green.
When the transmitter is not in use,
Note:
L/R
AUDIO IN
Switch
CH
AC
Jack
set it to standby to avoid interference with
other wireless devices.
OPERATION
begin listening, adjust the volume to a
comfortable level.
• Do not listen at extremely high volume
levels. Extended high-volume listening
can lead to permanent hearing loss.
• Once you set the volume, do not increase
it. Over time, your ears adapt to the volume level, so a volume level that does
not cause discomfort might still damage
your hearing.
Using Your Headphones
You can use multiple sets of headphones with
each transmitter. We do not recommend using
multiple transmitters in the same area.
1. Set the headphones’ channel (
the same channel as the transmitter.
2. Turn on the transmitter and the audio
source.
3. To turn on the headphones, slide
to ON. The POWER indicator lights.
If the POWER indicator is blinking,
Note:
the battery level is low and you must
recharge it before use.
4. Put on the headphones and adjust
to the desired listening level.
UME
If you connected the transmitter to
Note:
an audio source’s headphone jack, set
the audio source’s volume control to its
mid-position, then adjust the headphones’
VOLUME
to the desired level.
5. To turn off the headphones, slide
to
.
ON/OFF
OFF
– 3) to
1
ON/OFF
VOL-
POWER
Listening Safely
To protect your hearing, follow these guidelines when you use headphones.
• Set the volume to the lowest setting
before you begin listening. After you
Notes:
• To preserve battery life, be sure to turn off
the headphones when you are not using
them.
• If reception is poor even when the batteries are fully charged and you are near the
3
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transmitter, try moving the transmitter to a
higher location or moving it away from the
audio source.
TROUBLESHOOTING
We do not expect you to have problems with
your headphones, but if you do, these suggestions might help.
Problem Solution
No sound Be sure the headphones are turned
Charge the headphones’ batteries.
Be sure the AC adapter is plugged in
and has power.
Be sure all cables are securely con-
nected.
Be sure the audio source is turned on
and tuned to an active channel.
Be sure the source’s volume control is
turned up.
Be sure the headphones and transmit-
ter are set to the same channel.
Adjust the headphones’ volume con-
trol.
Change the position of the transmitter.
Distorted
audio
Be sure the headphones and transmitter are set to the same channel.
If you connected the transmitter to an
audio source’s headphone jack, reduce
the audio source’s volume.
Charge the headphones’ batteries.
Change the position of the transmitter.
on.
CARE
Keep the headphones dry. Use and store the
headphones only in normal temperature environments. Handle the headphones carefully.
Keep the headphones away from dust and
dirt, and wipe them with a damp cloth occasionally to keep them looking new.
Modifying or tampering with the headphones’
internal components can cause a malfunction
RadioShack Corporation
Fort Worth, Texas 76102
and might invalidate their warranty and void
your FCC authorization to operate them. If
your headphones are not performing as they
should, take them to your local RadioShack
store for assistance.
SPECIFICATIONS
Transmitter
Carrier Frequency ....................................... 911.4 – 918.4 MHz
Power Source ................................................. 12V DC, 250 mA
Modulation Method ............................................ FM Modulation
Frequency Response ............................. 50 Hz – 20 kHz (6 dB)
Receiver
Sensitivity .............................................. <2µV (with 20 dB S/N)
S/N Ratio (@ –50dBm) ................................. >60 dB (A weight)
Audio Distortion .................................................................. <2
Max. Audio output ......................................................... > 8 mW
Power requirement ............................................. 3.6V 200 mAH
Specifications are typical; individual units might vary. Specifications are subject to change and improvement without notice.
This product is warranted by RadioShack against manufacturing defe cts in material and workmanship under normal use fo r ninety (9 0) days from the date of
purchase from RadioShack company-owned stores and authorized
RadioShack franchisees and dealers. EXCEPT AS PROVIDED HEREIN,
RadioShack MAKES NO EXPRESS WARRANTIES AND ANY IMPLIED WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE DURATION OF THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN. EXCEPT AS PROVIDED HEREIN, RadioShack SHALL HAVE NO LIABILITY OR
RESPONSIBILITY TO CUSTOMER OR ANY OTHER PERSON OR ENTITY
WITH RESPECT TO ANY LIABILITY, LOSS OR DAMAGE CAUSED DIRECTLY OR INDIRECTLY BY USE OR PERFORMANCE OF THE PRODUCT
OR ARISING OUT OF ANY BREACH OF THIS WARRANTY, INCLUDING,
BUT NOT LIMITED TO, ANY DAMAGES RESULTING FROM INCONVENIENCE, LOSS OF TIME, DATA, PROPERTY, REVENUE, OR PROFIT OR
ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
EVEN IF RadioShack HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES.
Some states do not allow limitations on how long an implied warranty lasts or
the exclusion or limitation of incidental or consequential damages, so the above
limitations or exclusions may not apply to you.
In the event of a product defect during the warranty per iod, take the product
and the RadioShack sales receipt as proof of purchase date to any RadioShack
store. RadioShack will, at its option, unless otherwise provided by law:
(a) correct the defect by produc t repair without charge for parts and l abor; (b)
replace the product with one of the same or similar design; or (c) refund the purchase price. All replaced parts and products, and products on which a refund is
made, become the property of RadioShack. New or reconditioned parts and
products may be used in the performance of warranty service. Repair ed or replaced parts and products are warranted fo r the remainder o f the origina l warranty period. You will be charged for repair or replacement of the product made
after the expiration of the warranty period.
This warranty does not cover: (a) damage or failure caused by or attributable to
acts of God, abuse, accident, misuse, improp er or abnormal usage, failure to
follow instructions, improper installatio n or maintenanc e, alteration, l ightning or
other incidence of excess voltage or current; (b) any repairs other than those
provided by a RadioShack Authorized Service Fac ility; (c) consumables such
as fuses or batteries; (d) cosmetic dama ge; (e) transportation, shipping or insurance costs; or (f) costs of product remov al, installation, set-up service adjustment or reinstallation.
This warranty gives you specific legal rights, and you may also have other
rights which vary from state to state.
RadioShack Customer Relations, 200 Taylor Street, 6th Floor, Fort Worth, TX
Limited Ninety-Day Warranty
We Service What We Sell
Ni-MH rechargeable battery pack
76102
12/99
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