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© 2012, Williams Sound, LLC MCAT 155C
800.843.3544 / info@williamssound.com / www.williamssound.com
Mid-range Infrared System
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!
Domestic Sales
Williams Sound
10300 Valley View Rd.
Eden Prairie, MN 55344
Ph: 800-328-6190 / 952-943-2252
FAX: 952-943-2174
Email: info@williamssound.com
Web: www.williamssound.com
International Sales
International Sales Department
Williams Sound
10300 Valley View Rd.
Eden Prairie, MN 55344 USA
Phone: +1 952 943 2252
Fax: +1 952 943 2174
Email: info@williamssound.com
Web: www.williamssound.com
Bid Specs
WIR TX75/b
The Williams Sound WIR TX75 Infrared Transmitter shall consist
of an all in one modulator and emitter operating on 2.3MHz and/
or 2.8MHz. The WIR TX75b shall operate at 3.3 MHz and/or 3.8
MHz. The carrier frequency shall use 50kHz deviation and 50 μS
pre-emphasis.
The TX75 shall have a minimum coverage of 5,000 sq ft with the
WIR RX22-4 receiver in single channel mode.
The TX75 shall be housed in a heavy-duty black plastic enclosure
with a durable infra-red transparent front lens. It shall be convection
cooled without fans. The Transmitter includes an omni-directional
mounting bracket for various permanent installations.
The TX75 shall have a line level RCA input for each of the channels.
Each channel shall have an audio input level LED. There shall be
a single 3.5mm microphone input with gain control. The mic input
shall have a channel selector switch.
The Transmitter shall have a switch to turn off all indicator LED’s.
There shall be a switch for selecting either balanced or unbalanced
line level inputs.
The TX75 shall have two RJ45 outputs to supply power and
baseband signal to two WIR TX75-S slave emitters via CAT-5 cable.
A single CAT-5 cable supplies power, signal and digital control to the
slave unit up to 100 ft from the Transmitter.
The Transmitter shall be powered by a 48VDC universal power
supply, 50-60Hz, 100-240 VAC input, 24W.
The TX75 shall be covered by a two-year parts and labor warranty,
90 days on accessories.
This Transmitter shall be the Williams Sound model WIR TX75.
WIR RX22-4
The receiver shall be a body-pack type with IR detector lens
behind face of the unit. The unit shall have a lanyard for hands-free
operation. The receiver shall have a rotary-type volume control. The
receiver shall operate for 60 hours with two AA alkaline batteries
and for 30 hours per charge with NiMH AA batteries. The receiver
shall be charged without battery removal via charger contacts in
the case. A drop-in charger accessory shall recharge the batteries
in 16 hours when used with CHG 3512 charger. The receiver
shall be housed in an impact resistant plastic case with a hinged
battery door that does not separate from the receiver. The receiver
shall receive 2.3 MHz, 2.8 MHz, 3.3 MHz or 3.8 MHz modulated
IR signals with 50 μS de-emphasis. The receiver shall have a
3.5 mm stereo phone jack and accommodate low-impedance
mono or stereo earphones and headphones. The receiver shall
accommodate neckloop telecoil couplers. The receivers shall
provide 125 dB SSPL90 output with HED 021 headphone and 110
dB SSPL90 with EAR 013 earbud-type earphone.
The system electrical frequency response shall be 25 Hz to 16 kHz,
+1, -3 dB and the S/N ratio shall be 60 dB. The receiver shall have
CE, FCC RoHS and WEEE approval. The receiver shall be covered
by a ve-year parts and labor warranty, excluding earphones,
headphones, batteries and chargers.
The receiver shall be the Williams Sound model WIR RX22-4.