RCA WHP175, WHP170 User Manual

900MHz Wireless Headphones
Casque sans fil à émetteur de 900 MHz
Audífonos inalámbricos con transmisor

de 900 MHz

Transmits stereo signal
even outside your home!

Émet un signal stéréo même
à l'extérieur de la maison!

¡Transmite señal estereofónica
incluso afuera de su casa!

* Range may vary by environment.
* La portée peut varier selon l'environnement.
* El alcance puede variar según el entorno.

WHP170/WHP175

HEADSET SAFETY

Follow these precautions for safe usage of your wireless headphones.

1. These wireless headphones have been designed for residential use and should
not be used for industrial purposes. The headphones should be installed and
used in accordance with the instructions contained in this manual.

2. Read through these instructions completely before installation. Follow the
instructions carefully and carry them out in the correct order. Keep the manual
on hand for future reference.

3. The power for this headphone system is delivered with batteries. Before
charging, read the instructions in this manual. Disconnect
the power supply from the recharging cradle/transmitter before installing or
removing batteries.

4. Always leave easy access to the main power supply.

5. Disconnect the unit from the main power supply during storms,
or if you will be absent for a long period of time.

6. If you observe smoke or detect a burning odor, immediately disconnect the
device from the main power supply.

7. Never open the unit yourself; you may receive a severe electric shock, leading
to serious injury or even death.

8. Protect the unit from dust, humidity and sources of excessive heat (e.g.,
fireplace or radiator).

9. The power source should not be in contact with liquids or exposed
to the risk of dripping or splashing liquid. Be careful not to place
the power source or recharging cradle/transmitter near any object containing
liquid (e.g., a vase, glass or bottle).

10. Do not expose the unit to direct sunlight. Its maximum ambient temperature is
95° Fahrenheit (35° Celsius).

11. The ventilation should not be impeded by covering the unit
with any items, such as newspapers, tablecloths, curtains, etc.

12. No flame sources, such as lighted candles, should be placed on
or close to the recharging cradle/transmitter.

13. This unit has been designed for use in a dry environment. If, for exceptional
reasons, you must utilize the unit out of doors (balcony, veranda, etc.), take
care to protect it from dampness (dew, rain
or splashes of liquid).

14. The maximum ambient humidity that the device supports is 85 percent.
If the unit is cold and you wish to use it in a warm room, wait until any
condensation on the unit evaporates by itself before you turn it on.

15. Clean the unit with a soft cloth soaked in a neutral detergent.
You may damage the unit if you use an alcohol-based product.
If you are unsure if the detergent is alcohol-based, test the cleaning product on
the underside of the unit.

Audiovox declines all liability for any use that does not comply with the
instructions in this User’s Manual.

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

HEADSET SAFETY (continued)

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 and correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect this 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.

Industry Canada: This device complies with Canadian ICES-003 and RSS210 rules.

Keep your sales receipt to obtain warranty parts and service and
for proof of purchase. Attach it here and record the serial and model numbers.
These numbers are located on the product.

Model No. ______________________
Serial No. ______________________
Purchase Date: __________________
Dealer/Address/Phone: ____________________________________
__________________________________________________________

TABLE OF CONTENTS

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Headphone Set Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Recharging the Headset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Recharging Cradle/Transmitter Description . . . . . . . . . . . . . . . . . . . . . . .6

Supplied Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Battery Installation and Information

Installing the Rechargeable Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Charging the Rechargeable Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

NiMH Rechargeable Battery Memory Effect. . . . . . . . . . . . . . . . . . . . . .8

NiMH Natural Power Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

NiMH Battery Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Connecting the Recharging Cradle/Transmitter . . . . . . . . . . . . . . . . . . . .9

Operation

Standard Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Alternate Installation Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

INTRODUCTION

Congratulations on your purchase of this wireless headphone
system. The WHP170/WHP175 utilizes wireless, radio frequency
transmission (900 MHz). The headphones are induction recharged
using an electric field and incorporate Phase Lock Loop (PLL)
technology, which offers three channels for radio transmissions.
This 900 MHz stereo wireless headphone system features a compact
design that enables you to enjoy music and TV sound just about
anywhere inside or outside your home. It’s simple to connect this
system to any sound source, such as a DVD, DBS, CD, TV, VCR,
stereo receiver or radio.

FEATURES

900 MHz RF technology lets you roam freely throughout your house

Operating distance up to 150 feet/45 meters from cradle/transmitter*

No line-of-sight limitations

Convenient power, volume and tuning controls located on headphones

* Range may vary by environment.

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HEADPHONE SET DESCRIPTION

For stand-alone functioning, your wireless headphones must be
powered by rechargeable batteries (included). The rechargeable batteries
must be installed into the battery compartment and recharged before
use. (See Battery Installation and Information, page 7).

Fine tuning control

(WHP170: knob)
(WHP175: button)

Volume control On indicator

On/off button

Rechargeable
battery
compartment

Rechargeable
battery
compartment

Rechargeable
batteries

Charge indicator

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RECHARGING THE HEADSET

To recharge the headset unit, place the headphones into the recharging
cradle/transmitter with the charge indicator facing to the front.
It is important that the headphones are placed in a completely vertical
position, not leaning to either side. If the headphones are placed
correctly, the charge indicator light on the headphones illuminates.

On indicator:
correct
recharge

Off indicator:
incorrect
recharge

RECHARGING CRADLE/TRANSMITTER

The recharging cradle/transmitter acts both as the transmitter of the signal
to the headphones as well as the recharging base.

FRONT

Power on indicator Charging contact

AUDIO IN
input jack

BACK

Channel selection control 1, 2, 3

DC IN power supply socket

6

SUPPLIED ACCESSORIES

This headphone system includes accessories that enable you to use your
wireless headphone set in a number of ways. (See sections on Standard
Usage and Alternate Installation Configuration, page 9).

Stereo Y adapter cable

(RCA/3.5 mm jack)

Stereo cable

(3.5 mm jacks)

Main power adapter

(AC/DC: 120 V ~ 60 Hz, 12 V = 200mA)

3.5 mm/6.35 mm jack adapter

BATTERY INSTALLATION AND INFORMATION

Your wireless headphone unit requires two rechargeable AAA batteries.
The two rechargeable batteries that are supplied with your wireless
headphones are uncharged. Before you can use the wireless headphones,
the batteries must be charged. Follow these steps to charge and install
the batteries.

Installing the Rechargeable Batteries

Take care to follow these steps to correctly charge and install the batteries.

1. On the left earphone, locate the battery compartment and the word
“Open.” Use your fingernail in the groove on top of the battery
compartment to lift the cover.

2. Insert two AAA rechargeable batteries (included), carefully following
the markings inside to ensure the batteries are inserted properly, with
the + and – ends in the correct positions.

3. Replace the battery compartment cover.

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BATTERY INSTALLATION AND INFO (continued)

Charging the Rechargeable Batteries

Follow these steps to recharge the NiMH rechargeable batteries.

1. Connect the AC/DC main power adapter to the DC IN

power supply socket, located on the back of the recharging cradle/
transmitter.

2. Then, plug the adapter into an electrical outlet.

3. Place the headphones into recharging cradle/transmitter, with

the charge indicator facing to the front. Make sure the headphones
are placed in a completely vertical position, not leading to either
side. If the headphones are placed correctly, the charge indicator
light illuminates.

4. Subsequent charging must be performed in about 15-17 hours.

NiMH Rechargeable Battery Memory Effect

When an NiMH rechargeable battery is first used, it is important to fully
charge it and then allow it to discharge three times in order to maximize
the battery’s storage capacity. When a battery is recharged before
it is completely discharged, it develops a memory that will limit the
amount of charge in the future. This reduces the battery’s storage
capacity for subsequent charges and so reduces the amount of time
your headphones can be used before recharging is necessary.

NiMH Natural Power Discharge

Due to their chemical design, all rechargeable batteries incur some
degree of natural discharge. This means they automatically lose their
charge to in varying degrees, and the battery’s capacity drops even
when not in use. The size of this power loss varies, depending on the
battery’s type, size, design, internal resistance and, most especially, the
temperature. The higher the temperature, the greater the power loss
through natural discharge.

NiMH Battery Warning

If you are using NiMH or NiCd batteries, the batteries will charge when
the headphones are powered with the AC power adapter. Do not power
the headphones with the AC power adapter if you installed alkaline or
other non-rechargeable batteries—this could cause the batteries to leak.
Do not mix batteries with different chemistry types (for example, a zinc
battery with an alkaline battery). Do not mix new and used batteries.
Do not leave batteries installed in the product when not in use for long
periods. Respect the environment and the law. Before disposing of
rechargeable batteries, ask your distributor if they can be recycled and
whether or not the distributor collects rechargeable batteries for recycling.

8

CONNECTING THE RECHARGING CRADLE/
TRANSMITTER

Follow this quick setup guide to ensure trouble-free installation of your
headphones. To connect the recharging cradle/transmitter to the audio
source, follow these steps.

1. Plug the stereo audio cable into the headphone jack of your audio

source (e.g., stereo, TV, CD player, DVD, etc.). If your audio source
has two RCA output jacks in place of a headphone jack, use the
supplied Y cable to connect your headphones to the two (red and
white) RCA jacks.

2. Connect the other end of the stereo audio cable to the AUDIO IN

socket at the back of the recharging cradle/transmitter.

3. Connect the AC/DC main power adapter to the DC IN power

supply socket at the back of the recharging cradle/transmitter. Then,
connect the adapter to an electrical outlet.

Important: This power unit is intended to be correctly oriented in a

vertical or floor mount position.

OPERATION

Standard usage

1. Switch on the audio source (TV, DVD, CD player, etc.) to which the

recharging cradle/transmitter is connected. If your audio source is
a DVD or CD player, start a disc.

WARNING: The recharging cradle/transmitter has an automatic
function that switches it off if the audio input jack does not receive
an audio signal for approximately two minutes. If the volume on
the audio source is too low, the recharging cradle/transmitter also
switches off after two minutes. This feature was installed to comply
with current legislation that reduces the amount of radio emissions
in the environment. To ensure that this function is not accidentally
triggered, set the audio source volume at approximately 50 percent
capacity. Consult your component user’s manual for details on how
to set the volume for headphones/earphones.

2. The recharging cradle/transmitter is now ready to receive an audio

signal. The recharging cradle/transmitter is activated automatically
when receiving an audio signal from the audio source.

3. Check to make sure the power on indicator light on the front of the

recharging cradle/transmitter is lit, indicating that the unit is ready.

4. Push the POWER ON/OFF button, located on the right earphone.

The LED light turns on to indicate activation.

5. The recharging cradle/transmitter features three phase lock loops

(PLL) for radio frequency transmissions. Select one of these channels,
using the switch on the back of the recharging cradle/transmitter.

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OPERATION (continued)

6. After selecting a channel, use the fine tuning control, located on right

earphone to adjust the reception. The PLL function automatically
locks the three channels, providing you with top-quality audio
reception with no sound loss.

7. Adjust the volume using the volume control, also located on the

right earphone.

8. When you are through using the headphones, switch them off

using the POWER ON/OFF button, and place the audio source
on standby.

Note: To ensure that your headphones are charged and ready for
use at all times, place them in the recharging cradle/transmitter when
not in use.

Alternate Installation Configuration

The accessories included with your headphone system include a jack
adapter for connecting the unit to a 6.35 mm headphone socket and
a Y cable. Normally, when a device is plugged into a headphone jack,
it automatically shuts off the speakers. If you want the speakers to
continue playing while you are using the headphone set, you can use
the Y adapter instead of the headphone jack. Use the supplied Y cable
to connect your headphones to the two (red and white) RCA jacks.
Connect the other end of the stereo audio cable to the AUDIO IN input
jack at the back of the recharging cradle/transmitter. This is especially
useful if, for example, your family is listening to music in one room
of your home and you want to listen to the same music in another
room. It is also beneficial in families where one person has a hearing
impairment. That person can use the headphones to listen to the
audio source, adjusting the volume as needed. This type of connection
also enables you to use your headphones more simply as you will
only need to switch on the audio source and switch on your
headphones to activate.

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TROUBLESHOOTING

Refer to this troubleshooting section if you encounter any difficulties in
setting up and using your headphones.

PROBLEM

No sound heard
through the
headphones

Poor sound quality
or interference

SOLUTION

A) Check that your audio source, recharging

cradle/transmitter and headphones are
connected, supplied properly and turned on.

B) Check to ensure that the rechargeable

batteries are installed in the headset
correctly and have been recharged properly.

C) Check to ensure the recharging cradle/

transmitter is running and the power
indicator light on the unit is lit.

D) Check that the audio source is delivering

a sufficient signal to the recharging cradle/
transmitter’s AUDIO IN input jack.

A) Check to ensure that the sound provided

by the audio source is loud enough and
of sufficient quality.

B) Check if the batteries in the headphones have

sufficient power. Recharge or replace them,
if necessary.

C) Check to see if you have selected the best

transmission channel (1, 2, or 3) to provide
the optimum signal reception. If necessary,
try another channel, remembering to fine­tune the reception using the tuning control.

D) Check if the distance between the headphones

and the recharging cradle/
transmitter is within the operating range.
(The effective range of this device is up to
150 feet/45 meters from the cradle/
transmitter.)* Move closer to the recharging
cradle/transmitter to receive the sound.

E) Check that the audio source provides

stereo sound.

* Range may vary by environment.

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TROUBLESHOOTING (continued)

PROBLEM

Power cut off

SOLUTION

The recharging cradle/transmitter has an
automatic power off function. When no signal
is received through the recharging cradle/
transmitter’s AUDIO IN input jack, it switches
off. Switch on your audio source again, and use
the tuning control to adjust reception. If necessary,
increase the audio source’s volume.

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SPECIFICATIONS

Models WHP170

Description Radio Frequency

Transmitter

Carrier Frequency 900 MHz

Effective Range Up to 150 feet/45 meters*

Power Supply 12 V (DC) via a 120V–60 Hz (AC)

Transmission Frequency UHF – 900 MHz/three channels:

Headset

Power Supply Two AAA 1.2V rechargeable batteries

* Range may vary by environment.

WHP175

Wireless Headphones System

main power supply adapter

911.9 MHz (1), 912.6 MHz (2)
and 913.3 MHz (3)

13

12 MONTH LIMITED WARRANTY

Audiovox Electronics Corporation (the “Company”) warrants to the
original retail purchaser of this product that should this product or any part
thereof, under normal use and conditions, be proven defective in material
or workmanship within 12 months from the date of original purchase, such
defect(s) will be repaired or replaced (at the Company’s option) without charge
for parts and repair labor. To obtain repair or replacement within the terms of
this Warranty, the product along with any accessories included in the original
packaging is to be delivered with proof of warranty coverage (e.g. dated bill of
sale), specification of defect(s), transportation prepaid, to the Company at the
address shown below. Do not return this product to the Retailer.

This Warranty is not transferable and does not cover product purchased,
serviced or used outside the United States or Canada. The warranty does not
extend to the elimination of externally generated static or noise, to costs incurred
for the installation, removal or reinstallation of the product. The warranty does
not apply to any product or part thereof which, in the opinion of the company,
has suffered or been damaged through alteration, improper installation,
mishandling, misuse, neglect, accident or exposure to moisture. This warranty
does not apply to damage caused by an AC adapter not provided with the
product, or by leaving non-rechargeable batteries in the product while plugged
into an AC outlet.

THE EXTENT OF THE COMPANY’S LIABILITY UNDER THIS WARRANTY IS
LIMITED TO THE REPAIR OR REPLACEMENT PROVIDED ABOVE AND, IN
NO EVENT, SHALL THE COMPANY’S LIABILITY EXCEED THE PURCHASE
PRICE PAID BY PURCHASER FOR THE PRODUCT. This Warranty is in lieu
of all other express warranties or liabilities. ANY IMPLIED WARRANTIES,
INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE, SHALL BE LIMITED TO
DURATION OF THIS WARRANTY. ANY ACTION FOR BREACH OF ANY
WARRANTY HEREUNDER, INCLUDING ANY IMPLIED WARRANTY, MUST
BE BROUGHT WITHIN A PERIOD OF 24 MONTHS FROM THE DATE OF
ORIGINAL PURCHASE. IN NO CASE SHALL THE COMPANY BE LIABLE
FOR ANY CONSEQUENTIAL OR INCIDENTAL DAMAGES WHATSOEVER.

No person or representative is authorized to assume for the Company any
liability other than expressed herein in connection with the sale of this product.
Some states/provinces do not allow limitations on how long an implied
warranty lasts or the exclusion or limitation of incidental or consequential
damage so the above limitations or exclusions may not apply to you. This
Warranty gives you specific legal rights and you may also have other rights
which vary from state/province to state/province.

Audiovox Electronics Corporation, 150 Marcus Blvd.,

U.S.A.:

Hauppauge, New York 11788

CANADA:

Unit 3, Door 16, Mississauga, Ontario L5T 3A5

Audiovox Return Center, c/o Genco, 6685 Kennedy Road,

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