Specifications

WARRANTY
The WIR TX7 carries a five year parts and labor warranty. 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 warranty.
WIR TX7 LISTENING SYSTEM SPECIFICATIONS
TX7 TRANSMITTER:
Size and Weight: 8.5 cm W x 12.5 cm H x 10.5 cm D (3.4" x 4.2" x 4.1"), 177 g (6.2 oz.)
Power Input: 12 VDC from 115 VAC, 60 Hz, 200 mA Class II wall transformer (UL-Listed) center is positive
on DC connector
Subcarrier Frequency: 250 kHz FM
Auto On/Of
f Indicator: Illuminates when12 VDC power and an audio signal are applied,
Transmitter shuts off 2–3 minutes after audio signal is removed.
Microphone Input: 3.5 mm jack connects to either MIC 070 Microphone or to Direct Audio Input with 5 kΩ
impedance.
Automatic Level Control: 30 dB compression range: 25 mV to 750 mVrms max. at 1 kHz
Frequency Response: 100 Hz to 10 kHz, ± 3 dB
Distortion: 1% Max. THD
INFRARED RECEIVER, MODEL WIR RX7
Size and Weight: 3-5/8" L x 2-3/8" W x 7/8" H (9.2 cm x 6 cm x 2.4 cm) 4.48 oz. (127 g)
Color and Material: Gray, shatter-proof polypropylene
Battery Type: 1.5V (AA) x 2, Alkaline (BAT 001) or Rechargeable AA Ni-Cad (BAT 026)
Battery Life: 30 hours with BAT 001, 15 hours/charge with BAT 026, 25 mA, nom. current drain
Modulation Frequency: 250 kHz FM, 50 µS de-emphasis
Signal to Noise Ratio: 60 dB with WIR TX7
Controls: Combination volume/On-Off knob,
Switched Low-Cut tone control (Lo: 20 Hz / Mid: 120 Hz / Hi: 700 Hz)
Audio Output: 3.5 mm mono mini phone jack, 35 mW maximum into 16 Ω
Acoustic Output: 130 dB MAX SSPL90 with EAR 013
Note: The RX7 Infrared 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.
Add’l Compatible Receivers: WIR RX5: Selectable Channel Infrared Receiver, operates at either 95 kHz or 250 kHz
ACCESSORIES
CHG 200 Multi-Char
ger
This char
ger is designed to stor
e and char
ge one or two r
eceivers simultaneously
overnight. 110 VAC. Use with Williams Sound BAT 022 rechargeable AA Ni-Cad batteries
only.
Williams Sound Corp.
10399 West 70th St., Eden Prairie, MN 55344-3459
U.S.A. 800-328-6190 / 612-943-2252 / FAX: [phone]
© 1998, Williams Sound Corp MAN 087 A