Williams Sound WIR TX295 User manual

VERVIEW

Thank you for purchasing the WIR 175 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 175.

You can use the WIR 175 for listening to the TV or other audio equipment, or for hearing assis-

tance 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, do not hesitate to call us toll-free at

1-800-843-3544.

YSTEM

OMPONENTS

1. TX295 Transmitter 2. RX4 Receiver

•TV Microphone (MIC 084) • AAA Batteries

• 1m Audio Cable with dual RCA plugs (WCA 078) (BAT 010)

•Power Supply

TEP

1: S

TX295 T

RANSMITTER

The WIR TX295 Transmitter may be placed on top of a TV or shelf. Place the TX295 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 operating distance is approximately 30 feet (9 m).

WIR 175 Listening System Instructions

Model WIR TX295 Transmitter, WIR RX4 Receiver

Williams Sound

Helping People Hear



Receiver Charging Cradle

Battery

Charging

Port

Battery

Charging

Port

Receiver

Charging 

Indicator

Right

Battery

Charging

Indicator

Left

Battery

Charging

Indicator

Infrared

Transmitting

Diodes

Infrared

Transmitting 

Diodes

(only for WIR 

RX295 Receiver)

Williams

Sound

Ideally, the TX295 Transmitter should be at ear-level height or above. The infrared light pat-

tern is much like a floodlight “cone” as it leaves the transmitter, 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 TX295 Transmitter, but use only one transmit-

ter in a room at the same time. Otherwise, interference will occur.

TEP

2: C

ONNECT THE

RANSMITTER

OWER

UPPLY

Plug the Power Supply cord into the “DC 12V” jack on the back of the TX295. Then plug the

Power Supply into an AC outlet.

TEP

3: S

ELECT AN

PERATING

REQUNCY FOR THE

TX295 T

RANSMITTER

To use the TX295 transmitter with the RX4 receiver, you must first setup the transmitter to oper-

ate in 95 kHz mode. Referring to the diagram above, slide the Stereo/Mono Selection Switch to

the “L” Left position for 95 kHz. The transmitter is now setup to operate with the RX4 receiver.

TEP

4: C

ONNECT THE

RANSMITTER TO THE

UDIO

OURCE

If you are using the TV Microphone, plug it into the “Mic” jack on the TX295 as shown. Use

the Velcro strip supplied to attach the microphone near the loudspeaker of your TV. The micro-

phone will allow you to play the TV at lower volume for other listeners and will pick up other

important sounds like the telephone or doorbell ringing.

Touse the supplied Audio Cable to connect the TX295 Transmitter directly to TV

,VCR, or

other equipment output jacks:

Connect the LEFT RCA plug from the TV (or VCR) speaker output into the LEFT RCA

jack on the TX295 transmitter. Remember, the Stereo/Mono Selection Switch must be in

the “L” Left position to transmit in 95 kHz!

When the Audio Inputs are used, the Mic input is automatically disabled.

NOTE: The TX295 has an automatic shut-offfeature that turns the Transmitter off90 seconds

after the audio signal is no longer present.

Williams Sound

Helping People Hear



ETTING UP THE

TX295 T

RANSMITTER

Power

Input ST = Stereo mode

L=95 kHz mode

R = 250 kHz mode

Stereo/Mono Switch RCA Jack (connect from TV speaker output).

STEREO: Use both RIGHT and LEFT jack.

95 kHz or 250 kHz: Use LEFT jack only.

Mic

Jack

DC12V

L MIC

ST L R

STEP 5: INSTALL THE RECEIVER BATTERIES

Load two AAA batteries into the RX4 Receiver.

Be careful not to bend the plastic tabs when you

replace the battery door.

Be sure to insert the battery “plus” and “minus”

terminals correctly. DO NOT force them in back-

wards.

STEP 6: USING THE RECEIVER

Make sure your TV or Audio Source is turned ON.

Turn the receiver’s Power 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 sureto turnthe Receiver OFF when it is not

in use.

INCASE 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 TX295 Transmitter is

plugged in and correctly connected to the TV

or VCR’s audio output.

3. Make sure the TX295 is operating on 95 kHz, not

stereo or 250 kHz mode. See Step 3.

If you’re using the TV Mic and not getting a sig-

nal: 1) Be sure the audio cable is not plugged

into the TX295; 2) Try turning the TV volume

up slightly; 3) Try positioning the TV mic

directly over the TV speaker.

5. Make sure that the RX4 Receiver has working

batteries.

6. Make sure you are not covering the RX4’s

infrared “eye.” Remove any objects obstruct-

ing the line between the TX295 Transmitter

and the RX4 Receiver.

7. If you’ve installed the TX295 Transmitter

other than on top of the TV, make sure that its

front panel is facing the RX4 Receiver.

8. If the system still does not function, call

Williams Sound Product Service at

1-800-843-3544.

ARRANTY

The WIR 175 Listening System carries a five year

parts and labor warranty on the TX295 Transmitter

and RX4 Receiver.The TV microphone, earphones,

headphones, rechargeable batteries, adaptors, and AC

to DC Power Adaptor carry a 90 day warranty. Be

sure to fill out and mail the Warranty Card to register

your serial number and warranty.

On/Off

Switch

Volume

Control

Battery

Door

Williams Sound

Helping People Hear



FIGURE 3: RX4 RECEIVER

WIR 175 LISTENING SYSTEM SPECIFICATIONS

WIR TX295 Transmitter:

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 or stereo or 250 kHz

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 kΩ

Line Inputs: 2 RCA jacks for mono or stereo line-level sources. 200 mV min. to 10 V rms

max. input level, 5.1 kΩ

Automatic Level Control: 35 dB compression range

Infrared LEDs, Pattern: 8 IR LEDs, 45 degree cone-shaped coverage pattern to 6dB intensity, 30ft.

(9m) line of sight

Charging Ports: Charges one WIR RX295 Receiver (not included)

Warranty: 5 years*

RX4 Receiver:

Weight: 5.4 oz (154 g) with batteries

Earpad Size: 6.5 cm (2.5") Diameter, adjustable headband, uses HED 023 foam cushions

Material and Color: ABS plastic, Textured Gray

Battery Type, Life: 2 - AAA Alkaline, 50 hours

Modulation Frequency: 95 kHz FM, 50 µS de-emphasis

Frequency Response: 200 Hz to 8 kHz, ± 5 dB

Signal to Noise Ratio: 60 dB at 4 m

Controls: On/Offslide switch, volume control wheel

Acoustic Output: 105 dB MAX SSPL90, 100 dB HF AVG SSPL90 with 2 cc coupler

Compatability: Compatible with most wide-band 95kHz IR Transmitters

Warranty: 5years*

On Indicator: Red LED

*90 days on battery, power supply and cords.

Williams Sound Corp.

10321 West 70th St., Eden Prairie, MN 55344-3459

U.S.A. 800-328-6190 / 952-943-2252 / FAX: 952-943-2174

www.williamssound.com

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