Williams Sound WIR 237 User Manual

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237 WIR Model • System Listening Infrared TVSoundPlus

SoundPlusTV Infrared Listening System •Model WIR 237

Description:

The WIR 237 system is ideal for TV or stereo listening, meetings, offices, or other small group listening applications. It connects directly to your TV, VCR, or DVD equipped with standard audio output jacks. The system features the versatile WIR RX237 receiver; with a 3.5mm jack, the listener can plug in a variety of stereo or mono earphone, headphone, or neckloop accessories. The receiver’s on/off switch is conveniently built into the jack of the unit.

Applications:

• Television Listening • Stereo Listening • Small Group Listening • Language Interpretation • Offices

WIR TX238 Transmitter:

Size, Weight, Color:

6.25” L x 3.25” W x 1.25” H (15.9 cm x 8.3 cm x 3.2 cm), 5.1 oz (140 g), Gray

Power Input:

12 VDC (center is positive) on DC connector, 200 mA Class II wall transformer

 

TFP 024 Power Supply: North America: 120 VAC, 60 Hz, UL/CSA

 

TFP 032 Power Supply, 2 pin Euro mains plug, 230 VAC, 50-60Hz, CE

 

TFP 033 Power Supply, 3 pin UK mains plug, 230 VAC, 50-60Hz, CE

Subcarrier Frequency:

2.3 MHz, 2.8 MHz, or stereo

Range:

30ft (9m) line-of-site

Auto Power On/Off:

Transmitter shuts off infrared after 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-levelsources. 200 mV min. to 10 V rms max. input level, 5.1 kΩ

Automatic Level Control:

35 dB compression range

Infrared LEDs, Pattern:

6 IR LEDs, 45 degree cone-shapedcoverage pattern to 6 dB intensity, 30 ft (9 m) line of sight

Charging Ports:

Charges one WIR RX238 Receiver plus two additional BAT AP97A NiMH battery packs**

Approvals:

RoHS, WEEE

Warranty:

5 years, parts and labor*

R

L

MIC

DC12V

- +

TX238 Front

TX238 Rear

*90 days on accessories.

NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

 

©2007, Williams Sound Corp. MCAT 052B

1

 

 

 

237 WIR Model • System Listening Infrared TVSoundPlus

SoundPlusTV Infrared Listening System •Model WIR 237

WIR RX237 Receiver:

Weight:

1.7 oz (50 g) with battery

Material and Color:

ABS plastic, Black

Battery Type, Life:

BAT AP97A NiMH Battery Pack, 6

 

hours

Modulation Frequency:

2.3 and 2.8 MHz

Frequency Response:

200 Hz to 8 kHz, ± 5 dB

Signal-to-NoiseRatio:

60 dB at 9 m

Controls:

Volume control thumbwheel; screw-

 

driver adjust balance

 

and (L & R) tone controls

Acoustic Output:

115 dB MAX SSPL90 with EAR 013

 

(2cc coupler)

Compatibility:

Compatible with transmitters operat-

 

ing on 2.3 MHz/2.8 MHz

Power Switch:

Built into jack

Approvals:

RoHS, WEEE

Warranty:

5 years, parts and labor*

RX237 Front

(Earphone not included.)

*90 days on accessories.

NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

 

©2007, Williams Sound Corp. MCAT 052B

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237 WIR Model • System Listening Infrared TVSoundPlus

SoundPlusTV Infrared Listening System •Model WIR 237

Bid Specs:

TX238 Transmitter

The transmitter shall be encased in a grey, ABS plastic, compact in design for easy mounting on top of a TV, VCR or audio equipment. The transmitter shall have 6 infrared LEDs that can transmit a signal up to 30 ft (line-of-sight)at 6 dB of intensity. There shall be a two position slide switch for selecting stereo or mono (2.3/2.8 MHz) operation. Two RCA jacks shall be available for mono or stereoline-levelinput at 200 mV to 10 V. A 3.5 mm jack shall be available for microphone input at 1.5 k. A television microphone shall be included to directly pick up the audio of the sound source where there are no available jacks. The transmitter shall have a battery charger for the RX238’s BAT AP97A on each side of the transmitter.

The transmitter shall serve as a charger for a single RX238 receiver plus two additional BAT AP97A batteries.** The transmitter shall automatically turn off after 5 minutes of no audio. The transmitter shall have RoHS and WEEE approval and be covered by a five-yearparts and labor warranty.* The transmitter shall be the Williams Sound Corp. model WIR TX238.

RX237 Receiver

The receiver shall be underchin with an IR detector lens in the face of the unit. The receiver shall be compatible with transmitters operating on 2.3 MHz/2.8 MHz. The receiver shall have a rotary-typevolume control and the power switch shall be built into the “jack,” so that the unit will automatically shut off when the earphone or headphone is unplugged. The receiver shall have left and right tone and balance control adjustable by a screwdriver. The receiver shall operate for 6 hours per charge with 1 BAT AP97A NiMH battery. The receiver shall be housed in a black ABS plastic case. The receiver shall provide 115 dB SSPL90 output (w/EAR 013). The system frequency response shall be 200 Hz to 8 kHz, and the sig-nal-to-noiseratio shall be 60 dB at 9 m. The receiver shall have RoHS and WEEE approval and be covered by afive-yearparts and labor warranty*, 90 days on the battery. The receiver shall be the Williams Sound Corp. model WIR RX237.

**Only one additional battery is supplied with the WIR 237 system.

*90 days on accessories.

NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

 

©2007, Williams Sound Corp. MCAT 052B

3

 

 

 

237 WIR Model • System Listening Infrared TVSoundPlus

SoundPlusTV Infrared Listening System •Model WIR 237

Contact:

United States

Williams Sound Corp.

10321 W. 70th Street

Eden Prairie, MN 55344-3446

Ph: 800-328-6190or952-943-2252Fax:952-943-2174

Email: info@williamssound.com Web: www.williamssound.com

Canada

Thorvin Electronics

2861 Sherwood Heights Dr. Units 36-37Oakville, ONL6J-7K1Canada

Ph: 800-323-6634or905-829-3040Fax:905-829-4196

Web: www.thorvinelectronics.com

Asia, Australia, Latin America, Middle East, South Africa

International Sales Department Williams Sound Corp.

10321 W. 70th Street

Eden Prairie, MN 55344 USA Phone: +1 952 224 7791 Fax: +1 952 943 2174

Email: info@williamssound.com Web: www.williamssound.com

NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

 

©2007, Williams Sound Corp. MCAT 052B

4