Williams Sound Sound Plus WIR 950 Troubleshooting guide

Installation Guide &
User Manual
Sound Plus® Infrared System, Model WIR 950
Sound Plus
®
Sound Plus
®
Williams
Sound
Sound Plus
®
Sound Plus
®
Williams
Sound
MAN 101B
Williams Sound
®
Helping People Hear

1

OVERVIEW
Thank you for purchasing the WIR 950 Infrared 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 950.
You can use the WIR 950 for hearing assistance in conference rooms, lis-
tening to the TV, or with other audio equipment. The TX95 Transmitter fea-
tures an Automatic Level Control to adjust for different audio signal levels
and to maintain a comfortable listening level.
If you have problems at anytime with the WIR 950, do not hesitate to
call us toll-free at 1-800-843-3544.
SYSTEM COMPONENTS
• WIR TX95 Transmitter • WIR RX95 Receiver
• Power Supply • 1m Audio Cable with
• TV Microphone dual RCA plugs (WCA 078)
(MIC 084) • Two Rechargeable Batteries
(BAT AP97A)
SETTING UP
NOTICE: THE RECHARGEABLE BATTERIES ARE SHIPPED IN A DIS-
CHARGED STATE. THE BATTERIES MUST BE CHARGED OVERNIGHT
BEFORE USING THE WIR 950 SYSTEM.
Williams Sound
®
Helping People Hear

Receiver
Charging 
Indicator
Receiver Charging Cradle
Right
Battery
Charging
Indicator
Left
Battery
Charging
Indicator
Battery
Charging
Port
Battery
Charging
Port
Infrared
Transmitting
Diodes
Infrared
Transmitting 
Diodes
(only forWIR 
RX95 Receiver)
3

+
-
RDC12V LM
POWER SUPPLY
TELEVISION,
VCR,
STEREO
MICROPHONE
TX95
TV, VCR, STEREO
TV Mic
- OR -
3
1
2
4
LR
STEP 1: SET UP THE TX95 TRANSMITTER
The WIR TX95 Transmitter may be placed on top of a TV or shelf. Place the
TX95 Transmitter where it is clearly visible from your listening position.
Infrared light behaves like visible light, so it is blocked by solid objects. This
confines the signal to the room where the transmitter is located. The Transmitter
cannot be placed inside or behind anything except glass. The maximum operat-
ing distance is approximately 30 feet (9 m).
Ideally, the TX95 Transmitter should be at ear-level height or above. The
infrared light pattern is much like a floodlight “cone” as it leaves the transmit-
ter, with the best reception inside the cone.
Sunlight can cause infrared interference 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 sunlight
is a problem.
Any number of receivers may be used with the TX95 Transmitter, but use only
one transmitter in a room at the same time. Otherwise, interference will occur.
Williams Sound
®
Helping People Hear

4

STEP 2: CONNECT THE TRANSMITTER POWER SUPPLY
Plug the Power Supply
1 cord into the “DC 12V” jack on the back of the
TX95. Then plug the Power Supply into an AC outlet. When the receiver is
placed into the charging cradle built into the top of the transmitter, the center
charging indicator on the front of the TX95 will turn on. When the spare battery
is plugged into the left or right battery charging port on the transmitter, the cor-
responding charge indicator light will turn on.
STEP 3: CONNECT THE TRANSMITTER TO THE AUDIO SOURCE
If you are using the TVMicrophone 2 , plug it into the “Mic” jack on the TX95
as shown. Use the Velcro strip supplied to attach the microphone near the loud-
speaker of your TV. The microphone will allow you to play the TV at lower vol-
ume for other listeners and will pick up other important sounds like the tele-
phone or doorbell ringing.
You may also use theAudio Cable 3 supplied to connect the TX95 Transmitter
directly to TV, VCR, or other equipment output jacks
4 . The WIR 950 is a
mono system, so the Left and Right Inputs are mixed together. The Left or Right
input jack may be used with a mono sound source. When the Audio Inputs are
used, the Mic input is disabled.
The TX95 has an automatic shut-off feature that turns the Transmitter off 90
seconds after the audio signal is no longer present.
STEP 4: INSTALL THE RECEIVER BATTERIES
Insert the Rechargeable battery into the bottom of the RX95 Receiver. Place the
Receiver into the charger cradle built into the top of the TX95 Transmitter and
let charge overnight. The spare battery can be plugged into the charging port
located on either side of the Transmitter. By keeping the spare battery charged,
you can easily swap batteries when the one in use runs out and always have a
fresh battery ready. A fully charged battery will operate the receiver for approx-
imately 5 hours, depending on the volume setting. The battery should be
changed when you notice the sound getting weak and noisy or if the Receiver
indicator light is not on. The batteries may be left charging when not in use.
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®
Helping People Hear
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5

STEP 5: USING THE WIR RX95 RECEIVER
To use the system, first make sure your TV orAudio Source is turned ON. Make
sure the Receiver battery is fully charged. The RX95 Receiver has an automat-
ic on/off function. When you put the receiver on, it turns on. When you take the
receiver off, it turns off. Rotate the Volume Control to adjust the volume to a
comfortable level.
Sound Plus
®
RX95 Receiver
Battery (BAT AP97A)
Volume Control
A dual detector infrared “eye” is located on the front of the receiver. Do not
cover it up or you will lose reception. Make sure the “SOUND PLUS” label
is facing away from you when you put the receiver on.
Return the Receiver to the charger when it is not in use.
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Helping People Hear
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6

ADDITIONAL RECEIVER ADJUSTMENTS
Balance Control: Use a small screwdriver to adjust the loudness balance
between the Left and Right Earphones.
Tone Controls: Use a small screwdriver to adjust the tone for the left and
right earphones.
Ear Cushions: Replacement Ear Cushions are available from your
Williams Sound dealer, Part Number EAR 031
BAL
L
L
-
-
R
-
–
+
R
–
+
RX95 (Rear View)
Tone Controls Balance Control
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®
Helping People Hear
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7

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 TX95 Transmitter is plugged in and correctly connected to
the TV Mic or audio output jacks.
3. If you’re using the TV Mic and not getting a signal, try turning the TV vol-
ume up slightly. Also, try positioning the TV Mic directly over the TV speak-
er.
4. Make sure that the RX95 Receiver has a fully charged battery.
5. Make sure you are not covering the RX95's infrared “eye.” Remove any
objects obstructing the line between the TX95 Transmitter and the RX95
Receiver.
6. If you’ve installed the TX95 Transmitter other than on top of the TV, make
sure that its front panel is facing the RX95 Receiver.
7. If the system still does not function, call Williams Sound at 1-800-843-3544.
WARRANTY
The WIR 950 carries a five year parts and labor warranty. The TV microphone,
Rechargeable Battery, Audio Cable, and AC Power Supply carry a 90 day war-
ranty. Be sure to fill out and mail the Warranty Card to register your warranty.
Williams Sound
®
Helping People Hear
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8

WIR 950
SYSTEM SPECIFICATIONS:
WIR TX95 Transmitter:
Models: WIR 950 (N. America)
WIR 950-01 (EURO)
WIR 950-02 (UK)
Size, Weight, Color: 6.25”L x 3.25”W x 1.25”H (15.9cm x 8.3cm x
3.2cm), 5.1oz. (140g), Gray
Power Input: 12 VDC (center is positive) on DC connector,
200 mA Class II wall transformer
TFP 024 Power Supply: North America:
120VAC, 60Hz, UL/CSA
TFP 032 Power Supply, 2 pin Euro mains plug,
230VAC, 50-60 Hz, CE
TFP 033 Power Supply, 3 pin UK mains plug,
230VAC, 50-60 Hz, CE
Subcarrier Frequency: 95 kHz FM, 35 kHz wide-band modulation, 50
µS pre-emphasis
Auto Power On/Off: Transmitter shuts off infrared after 1.5 minutes
when audio signal is removed. Battery charging
functions remain on full time.
Microphone Input: 3.5 mm jack for MIC 084 Electret TV
Microphone, 1.5 k½
Line Inputs: 2 RCA jacks for mono or stereo line-level
sources (bridged to mono)
200 mV min. to 10 V rms max. input level,
5.1 k½
Automatic Level Control: 35 dB compression range
Infrared LEDs, Pattern: 6 IR LEDs, 45 degree cone-shaped coverage
pattern to 6dB intensity,
30ft. (9m) line of sight
Charging Ports: Charges one WIR RX95 Receiver plus two addi-
tional BAT AP97A NiMH battery packs
Warranty: 5 years*
Williams Sound
®
Helping People Hear
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9

WIR RX95 Receiver:
Weight: 2.1 oz (60 g) with batteries
Material and Color: ABS plastic, Black and Grey
Battery Type, Life: BAT AP97A NiMH Battery Pack, 6 hours
Modulation Frequency: 95 kHz FM
Frequency Response: 200 Hz to 8 kHz, ± 5 dB
Signal to Noise Ratio: 60 dB at 10 m
Controls: Volume control thumbwheel; screwdriver
adjust balance and (L & R) tone controls
Acoustic Output: 112 dB MAX SSPL90 with 2 cc coupler
Compatibility: Compatible with most wide-band 95kHz IR
Transmitters
Power Switch: Built into receiver “arms”
On Indicator: Green LED
Ear pads: Uses EAR 031 foam cushions
Warranty: 5 years*
*90 days on accessory items
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®
Helping People Hear

10

Williams Sound Corp.
10399 West 70th St., Eden Prairie, MN 55344-3459
U.S.A. 800-328-6190 / 952-943-2252 / FAX: [phone]
www.williamssound.com
©2000, Williams Sound Corp. MAN 101B