Radio Shack 33-1185 User Manual

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33-1185.fmPage 1 Wednesday, November 10, 1999 10:29 AM

Cat. No. 33-1185

OWNER’S MANUAL

Please read before using this equipment.

Rechargeable 900 MHz

Wireless Stereo

Headphones

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INTRODUCTION

Your RadioShack Rechargeable 900 MHz Wireless Stereo Headphones bring you the latest in wireless headphone technology. They use the 900 MHz band to deliver high-qualitystereo sound to almost anywhere in or around your home. The signals from your audio source can easily travel through walls and floors, 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. Its features include:

Adjustable Deluxe Headphones — headband automatically adjusts for the most comfortable fit.

Supplied Rechargeable Nickel-Cad-mium Batteries, Y Adapter Cable,1/4- Inch Adapter Plug, AC Adapter, Charging Cable— everything you need to power the headphones and connect them to your home audio system.

Charging Jack — lets you charge rechargeable alkaline batteries in the headphones.

Charging Indicator — lets you see when the batteries are charging.

Volume Control — lets you easily adjust the volume to a comfortable listening level without adjusting the audio source.

THE FCC WANTS YOU TO KNOW

Your Wireless Stereo 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.

Note: Your headphones are subject to interference 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.

© 1999 Tandy Corporation.

All Rights Reserved.

RadioShack is a registered trademark used by Tandy Corporation.

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CONTENTS

 

Preparation ..............................................................................................................

4

Connecting to an Audio Source ..........................................................................

4

Using AC Power .................................................................................................

4

Installing Batteries ..............................................................................................

5

Charging Rechargeable Batteries ................................................................

6

Operation .................................................................................................................

7

Listening Safely ..................................................................................................

7

Using Your Headphones ....................................................................................

7

Adjusting the Frequency .....................................................................................

8

Troubleshooting ......................................................................................................

9

Care and Maintenance ..........................................................................................

10

Specifications .......................................................................................................

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PREPARATION

CONNECTING TO AN AUDIO SOURCE

Caution: Do not connect the transmitter to the audio source's speaker output. Doing so could damage the transmitter and audio source.

Connect the transmitter to your audio source's stereo headphone jack or to separate left and right audio output jacks (if available). If you connect the transmitter to audio output jacks, you can use the headphones’ volume control to adjust the volume without turning up the volume on your audio source.

To connect the transmitter to your audio source's stereo headphone jack, plug the single (1/8-inch)end of the supplied Y adapter cable into the headphone jack and connect the other ends into the supplied stereo audio cable (red plug to red jack and white plug to white jack). Then connect the red plug to transmitter'sR/ AUDIO IN jack and connect the white plug to theL/AUDIO IN jack.

Note: To connect aY-adapterto a1/4- inch headphone jack, slip the supplied1/4-inchadapter plug over the1/8-inchplug and complete the connections.

To connect the transmitter to your audio source's audio output jacks, connect one end of the supplied stereo audio cable to the transmitter's R/AUDIO IN and

R/AUDIO IN jacks (red plug to R/AUDIO INand white plug to L/AUDIO IN). Then plug the other ends into the audio source's audio output jacks (red plug to the right channel and white plug to the left channel).

USING AC POWER

Use the supplied 12-volt,100-mAAC adapter to connect the transmitter to AC power.

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Cautions:

You must use a Class 2

!power source that supplies 12 volts DC and delivers at

least 100 mA. Its center tip must be set to positive and its plug must fit the transmitter's DC 12V jack. The supplied adapter 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.

INSTALLING BATTERIES

To power the headphones’ receiver, use the three supplied AAA nickel-cadmiumrechargeable batteries. Or, you can use three AAA alkaline batteries (not supplied, available at your local RadioShack store).

Cautions:

Use only fresh batteries of the required size and recommended type.

Do not mix old and new batteries, different types of rechargeable batteries, or rechargeable batteries of different capacities.

Follow these steps to install batteries.

1.Remove the battery compartment cover on the left earpiece by pushing up the tab and pulling the cover up in the direction of the arrow.

2.Place the batteries over the ribbon in the compartment, as indicated by the polarity symbols (+ and –)in the illustration.

3.Replace the cover.

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When the headphones stop operating properly, replace or recharge the batteries.

Warnings:

Do not dispose of the batteries in a fire because they can explode.

Do not open or mutilate a battery. Swallowing a battery can be fatal.

Be careful not to short the batteries with conducting materials, such as rings, bracelets, and keys. The batteries or the conductor might overheat and burn.

Do not attempt to charge alkaline batteries.

Caution: When you replace the batteries, use replacement batteries of the required type (AAA), available through your local RadioShack store.

Important: This

product

 

 

 

 

 

 

 

 

can use nickel-cadmium

 

 

 

 

 

 

 

 

rechargeable

batteries.

 

 

 

 

 

 

 

 

At the end of

a

nickel-

-

 

 

 

 

 

 

2

 

 

 

1

 

 

 

 

 

2

 

 

 

 

8

 

 

 

 

 

 

cadmium battery's useful

0

0

 

 

 

4

 

-8

 

7

 

 

 

-

 

 

 

 

 

43

 

 

 

 

 

 

 

 

 

 

 

 

 

life, it must be recycled or

disposed of properly. Contact your local, county, or state hazardous waste management authorities for information on recycling or disposal programs in your area or call 1-800-843-7422.Some options that might be available are: municipal curbside collection,drop-offboxes at retailers such as your local RadioShack store, recycling collection centers, andmail-backprograms.

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Charging Rechargeable

Batteries

Before using your headphones for the first time, you must charge the headphones’ batteries for at least 24 hours. If the headphones' range decreases or you hear no sound from the audio source, recharge the batteries. It takes 12 to 14 hours to completely recharge the batteries.

Follow these steps to charge the batteries.

1.If necessary, press the headphones' POWER ON/OFF button to turn off the headphones.

Note: You cannot charge the batteries with the headphones turned on.

2.Plug the supplied charging cable into the headphones' CHARGE jack on the left earpiece.

3.Plug the other end of the charging cable into the transmitter base's CHARGE jack. The indicator beside the jack lights.

4.When charging is complete, unplug the charging cable. The indicator turns off.

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OPERATION

LISTENING SAFELY

flash, rotate LEVEL clockwise until the indicator flashes.

To protect your hearing, follow these guidelines when you use headphones.

Set the volume to the lowest setting before you begin listening. After you begin listening, adjust the volume to a comfortable level.

Do not listen at extremely high volume levels. Extended high-volumelistening 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

1.Turn on the audio source.

Note: If connecting headphones does not automatically disable the audio source’s speakers, turn off the speakers.

2.If you connected the transmitter to an audio source's headphone jack

(or a jack that is controlled by the audio source's volume control), set LEVEL on the back of the transmitter about midway, then rotate the audio source's volume control until the indicator at the front of the transmitter flashes. If the indicator does not

If you connected the transmitter to an audio source's line output jack

(or a jack that is not controlled by the audio source's volume control), rotate VOL on the headphones fully counterclockwise, then rotateLEVEL until the indicator flashes rapidly or remains lit.

Note: Some audio sources might not make the indicator flash. For these sources, rotateLEVEL all the way to the left.

3.Press the headphones' POWER ON/OFF button to

turn on the headphones. The POWER indicator on the left earpiece lights.

4.Rotate TUNE until the STEREO indicator on the right earpiece lights.

5.Put on the head-

phones and adjust VOL on the right earpiece to the desired listening level.

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6.To turn off the headphones, take off the headphones, then press the

POWER ON/OFF button.

To preserve battery life, be sure to turn off the headphones when you are not using them.

Notes:

The STEREO indicator on the right earpiece lights when the headphones are receiving a clear signal. As you move out of the transmitter's range, the STEREO indicator turns off. You still can hear the audio source in mono until you move completely out of range.

If reception is poor even when the batteries are fully charged and you are near the transmitter, try moving the transmitter to a higher location or moving it away from the audio source.

ADJUSTING THE

FREQUENCY

If you receive interference from other devices, you might be able to reduce the interference by adjusting your headphones’ operating frequency.

Simply rotate FREQ ADJUST on the transmitter then rotateTUNE on the right earpiece until the STEREO indicator lights steadily.

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TROUBLESHOOTING

We do not expect you to have any problems with your headphones, but if you do, the following suggestions might help.

Problem

Solution

 

 

 

 

No sound

Be sure the headphones are turned on.

 

 

 

Charge the headphones' batteries.

 

 

 

Be sure the AC adapter is plugged in and has power.

 

 

 

Be sure all cables are connected securely.

 

 

 

Be sure the audio source is turned on and tuned to an

 

active channel.

 

 

 

If you have connected the transmitter to jacks that are

 

controlled by the audio source's volume control, be sure

 

the source's volume control is turned up.

 

 

 

If the stereo indicator on the right earpiece is not on,

 

adjust TUNE on the right earpiece until it turns on.

 

 

 

Adjust the headphones' volume control.

 

 

 

Change the position of the transmitter.

 

 

Distorted audio

If the STEREO indicator on the right earpiece does not

 

light steadily, adjust TUNE on the earpiece until it turns

 

on.

 

 

 

Rotate FREQ ADJUST on the transmitter, then adjust

 

TUNE on the right earpiece until the STEREO indicator

 

on the earpiece lights steadily.

 

 

 

If you connected the transmitter to an audio source’s

 

headphone jacks, reduce the audio source’s volume.

 

 

 

Charge the headphone's batteries.

 

 

 

Change the position of the transmitter.

 

 

 

Adjust the LEVEL control on the transmitter so the level

 

indicator flashes only occasionally.

 

 

If you still have problems, take the headphones to your local RadioShack store for assistance.

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CARE AND MAINTENANCE

Your RadioShack Rechargeable 900 MHz Wireless Stereo Headphones are an example of superior design and craftsmanship. The following suggestions will help you care for your headphones so you can enjoy it for years.

Keep the headphones dry. If they get wet, wipe them dry immediately. Liquids might contain minerals that can corrode the electronic circuits.

Use and store the headphones only in normal temperature environments. Temperature extremes can shorten the life of electronic devices, damage batteries, and distort or melt plastic parts.

Keep the headphones away from dust and dirt, which can cause premature wear of parts.

Handle the headphones gently and carefully. Dropping them can damage circuit boards and cases and can cause the headphones to work improperly.

Use only fresh batteries of the required size and recommended type. Batteries can leak chemicals that damage your headphones’ electronic parts.

Wipe the headphones with a damp cloth occasionally to keep them looking new. Do not use harsh chemicals, cleaning solvents, or strong detergents to clean the headphones.

Modifying or tampering with the headphones’ internal components can cause a malfunction and might invalidate their warranty and void your FCC authorization to operate them. If your headphones are not performing as they should, take they to your local RadioShack store for assistance.

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