Williams Sound WIR 100 User manual

Williams Sound
®
Helping People Hear

1
WIR 100 Listening System Instructions
Model WIR TX4 Transmitter, WIR RX4 Receiver
Quick-charge 
Indicator
Audio Signal
Indicator
Auto Power 
Indicator
Quick Charge
Switch
RCA Jack
Audio Cable
110 VAC to 
12 VDC Adaptor
12 VDC Input
Charge
Contacts
TV Microphone
On/Off
Switch
(off to charge)
Charge
Indicator
Volume
Control
Battery
Door
Charging
Contacts
Figure 1: TX4 Transmitter (Rear View)
Figure2: TX4 Transmitter (Front View)
Figure3: RX4 Receiver
Overview
Thank you for purchasing the WIR 100 Listening
System from Williams Sound Corp. Anyone needing
auditory assistance to overcome background noise,
reverberation, or distance from the sound source can
benefit from the WIR 100.
You can use the WIR 100 for listening to the TV or
other audio equipment, or for hearing assistance in
conference rooms. You can also use your RX4
Receiver in most facilities which have an infrared
transmitter operating on 95 kHz, such as theaters,
cinemas, or churches.
If at anytime you have problems with the system,
don’t hesitate to call us toll-free at 1-800-843-3544.
System Components
The WIR 100 Listening System includes the follow-
ing elements.
1. TX4 Transmitter
• 110 VAC to 12 VDC Adaptor
•TV Microphone (MIC 059)
•RCA Plug Adapter (2)
2. RX4 Receiver
•(2) AAA Rechargeable Batteries (BAT 022)
Operating Instructions
1. Connect the Transmitter’s
Power Supply
Plug the 110 VAC to 12 VDC Adaptor cord into
the “DC 12V” input jack on the back of the TX4
Transmitter (Figure 1). Then plug the Adaptor
into a 110 VAC outlet. The red “auto power”
indicator will light momentarily. This red “auto
power” indicator will only stay lit once a proper
audio signal is connected.

3. Set Up The Transmitter
Ideally, the TX4 Transmitter should be at ear-
level height or above. The infrared light pattern
is cone-shaped as it leaves the Transmitter, as
shown in Figure 4. The best reception is inside
the cone. Sunlight can cause infrared interfer-
ence in the form of a buzz, hiss, or static. Thus,
the system cannot be used outdoors and may not
work properly inside if a lot of direct sunlight is
present. Closing drapes or blinds will help if sun-
light is a problem.
Any number of Receivers may be used with the
TX4 Transmitter, but use only one Transmitter in
aroom at the same time. Otherwise, interference
will occur.
2. Connect the Transmitter to the
Audio Source
For best operation, the Audio Cable can be con-
nected directly to your VCR or TV’s audio out-
put. As a second choice, the TX4 Audio Cable
can also be connected to an earphone/headphone
jack. (Use the plug adapters supplied if neces-
sary.)
If you have difficulty finding the direct audio
output on your TV, consult its operating instruc-
tions.
If your TV has no direct audio output or ear-
phone/headphone jack, use the MIC 059 TV
Microphone supplied. Plug the TV Mic into the
Audio Cable as shown in Figure 1. The micro-
phone has a self-adhesive clip that can be
attached near the loudspeaker of your TV
.
(See Figure 5.)
The TX4 Transmitter features an Automatic
Level Control to adjust for different audio signal
levels and to maintain a comfortable listening
level. When a proper audio signal is present, the
“Audio Signal” indicator will flash coincidently
with the audio signal. The red “Auto Power”
indicator will light constantly when enough
audio signal is present. If the audio signal is
removed, the “Auto Power” indicator will turn
OFF after approximately 4 minutes and will
remain offuntil an audio signal is reconnected.
Williams Sound
®
Helping People Hear

2
Transmitter
Receiver
Infrared Light "Cone"

Transmitter on top
of TV
TV Microphone
near speaker
Figure 5: TX4 Transmitter On TV
Figure 4: Infrared Light Pattern

4. Charging The Receiver Batteries
Load the two AAA Ni-Cad rechargeable batter-
ies into the RX4 Receiver. Be careful not to bend
the plastic tabs when you replace the battery
door.
The RX4 Receiver must be charged before it can
be used for the first time. For charging, set the
receiver on top of the transmitter so that:
a) the RX4’s ON/OFF switch is pointed toward
the back of the transmitter, and
b) the charging pins on the TX4 engage the
charging contact holes in the receiver.
(See Figure 3.)
Makesurethe Receiver Power Switch is
turned OFF while charging. (Figure 3.)
The Charging Indicator on the Receiver should
light. (See Figure 3.) If it doesn’t, make sure the
Transmitter power is connected and the charging
contact pins are properly engaged. The Receiver
trickle charges whenever it is placed on the
Transmitter / Charger Stand.
Press the Quick Charge Switch on the TX4 (See
Figure 1.) The Quick Charge Indicator on the
Transmitter will light.
In the Quick Charge mode, the batteries will
charge fully in about 6 hours. A fully-charged
battery will provide approximately 6 hours of
continuous Receiver operation.
Disposable AAA Alkaline batteries can be used
in the Receiver, but the Receiver should not be
placed on the charging stand.
5. Using the RX4 Receiver
Make sure your TV or Audio Source is turned
ON. Turn the receiver’sPower Switch to ON.
Place the headset on your head and locate the
Volume Control Wheel. (See Figure 3.) The
headband size can be adjusted by pulling or
pushing on each earpiece. Adjust the headset vol-
ume to a comfortable level.
The infrared receiver “eye” is located on top
of the headset. Do not cover it up or you will
lose reception.
Be sure to turn the Receiver OFF when it is
not in use.
In Case of Difficulty
If the system does not seem to be functioning:
1. Make sure that your television is plugged in and
turned on.
2. Make sure that the TX4 Transmitter is plugged in
and correctly connected to the TV or VCR’s
audio output.
3. If you’re using the TV Mic and not getting a sig-
nal, try turning the TV volume up slightly. Also,
try positioning the TV Mic directly over the TV
speaker.
4. Make sure that the RX4 Receiver has working
batteries.
5. Make sure you are not covering the RX4’s
infrared “eye”. Remove any objects obstructing
the line between the TX4 Transmitter and the
RX4 Receiver.
6. If you’ve installed the TX4 Transmitter other
than on top of the TV, make sure that its front
panel is facing the RX4 Receiver.
7. If the system still does not function, call Williams
Sound Corporation at 1-800-843-3544.
Warranty
The WIR 100 Listening System carries a one year
parts and labor warranty on the TX4 Transmitter and
RX4 Receiver. The TV microphone, rechargeable
batteries, adaptors, and Power Adaptor carry a 90 day
warranty. Be sure to fill out and mail the Warranty
Card to register your serial number and warranty.
Williams Sound
®
Helping People Hear

3
!! WARNING !!
DO NOT ATTEMPT TO RECHARGE
DISPOSABLE BATTERIES!
The batteries may heat up and burst, causing
possible injury and damage to the equipment.

Williams Sound Corp.
10321 West 70th St., Eden Prairie, MN 55344-3446
U.S.A. 800-843-3544 / 952-943-2252 / FAX: [phone]
Copyright 1996, Williams Sound Corp. MAN 042D
WIR 100 Listening System Specifications
Infrared Transmitter, Model WIR TX4
Power Input: 12 VDC from 115 VAC, 60 Hz, 200 mA Class II wall transformer (UL-Listed)
center is negative, shield is positive on DC connector
Size and Weight: 12 cm W x 23 cm H x 11.5 cm D (5" x 9.5" x 4.5"), 287 g (10.1 oz.)
Case Material and Color: Plastic, textured grey
Subcarrier Frequency: 95 kHz FM
Compatibility: Compatible with all 95 kHz ISO systems (including Sennheiser)
Audio Level Indicator: LED flasher indicates correct audio level
Microphone Input: MIC 059 TV Mic has RCA jack which connects to the TX4 audio input
RCA plug
Auxiliary Audio Input: RCA plug, 10 kΩimpedance
AGC Threshold: 25 mV at 1 kHz, 10 Vrms max. input level
Frequency Response: 50 Hz to 12 kHz, +/- 3 dB
Distortion: 1% Max. THD
AGC Compression Range: 30 dB
WIR RX4 Headset Receiver Specifications:
Weight: 154 g (5.4 oz) with batteries
Earpad Size: 6.5 cm (2.5") Diameter,foam cushions, adjustable headband,
Material and Color: ABS plastic, Textured Gray
Battery Type: 2 - AAA Ni-Cad Rechargeable
Battery Life: 6 hrs/charge
Modulation Frequency: 95 kHz FM, 50 µS de-emphasis
Signal to Noise Ratio: 45 dB at 4m
Controls: On/Offslide switch, volume control wheel
Acoustic Output: 120 dB MAX SSPL90, 115 dB HF AVG SSPL90 with 2 cc coupler
WIR RX3 Lavalier Receiver (Optional) Specifications:
Size and Weight: 9.2 cm L x 6 cm W x 2.2 cm H (3.62" x 2.36" x 0.86") 90 g (3.2 oz) with battery
Material and Color: Polypropylene, Gray
Battery Type: 9 Volt, Eveready 216, Eveready 522, or BAT003 Ni-Cad 7-cell rechargeable
Battery Life: 15 hrs with Eveready 216, 35 hrs with Eveready 522, 6 hrs/charge with BAT 003
Charging Jack: Earphone jack is used for charging
Modulation Frequency: 95 kHz FM, 50 µS de-emphasis
Signal to Noise Ratio: 50 dB at 4 m
Controls: Combination volume/On-Offwheel
Audio Output: 3.5 mm mono mini phone jack, 250 mW into 16 Ω
Acoustic Output: 130 dB MAX SSPL90, 110 dB HF A
VG SSPL90 with EAR 013, 2 cc coupler
The RX3 Receiver can be used with a Neckloop TeleCoil Coupler (NKL 001) to magnetically couple into a hearing aid that
has a telephone pick-up coil. The RX4 does not have a Neckloop jack.