Williams Sound Corp.
10321 West 70th St., Eden Prairie, MN 55344-3446
U.S.A. 800-843-3544 / 952-943-2252 / FAX: 952-943-2174
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 k
Ω
impedance
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/Off slide 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 BAT 003 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-Off wheel
Audio Output:
3.5 mm mono mini phone jack, 250 mW into 16
Ω
Acoustic Output:
130 dB MAX SSPL90, 110 dB HF AVG 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.
