Williams Sound WIR 237 User Manual
SoundPlus
™
TV Infrared Listening System • Model WIR 237
SoundPlus™TV Infrared Listening System • Model WIR 237
©2007, Williams Sound Corp. MCAT
052B 1
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
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
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, 50-60 Hz, CE
TFP 033 Power Supply, 3 pin UK mains plug, 230 VAC, 50-60 Hz, 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-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: 6 IR LEDs, 45 degree cone-shaped coverage 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*
WIR TX238 Transmitter:
TX238 Front
TX238 Rear
*90 days on accessories.
DC12V
-
+
R
L MIC
SoundPlus
™
TV Infrared Listening System • Model WIR 237
SoundPlus™TV Infrared Listening System • Model WIR 237
©2007, Williams Sound Corp. MCAT
052B 2
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
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-Noise Ratio: 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*
WIR RX237 Receiver:
RX237 Front
(Earphone not included.)
*90 days on accessories.
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