SoundPlus
™
WIR TX300 Infrared Listening System Specifications
Infrared Audio Processor/Modulator, Model MOD 1
Dimensions, Weight:
8.45" (21.5 cm) W x 8.18" (20.8 cm) D x
Rear Panel:
1.72" (4.4 cm) H, 3 lbs. (1.5 kg)
Audio Inputs:
Color:
Black epoxy paint with white legends
Rack Mount:
One IEC rack space high, one or two
units can be mounted in a single rack
Balanced Audio In:
space with optional RPK 005 (single) or
RPK 006 (double) Rack Mount Kits
Mic Input:
Power:
External power supply, 24VAC, 50 or
60Hz, 2.4VA, 82mA max. current drain
Modulation:
95kHz FM, ± 15kHz deviation, 75
½
source
impedance, 75µsec pre-emphasis,
Line Input:
AGC:
Variable slope compressor/limiter
Operating Req.:
0-50°C ambient temperature, non-
70 Volt Input:
condensing, non-corrosive atmosphere
Unbalanced Audio Ins:
Front Panel:
Power Switch:
Two-position rocker, ON/OFF
Input Selector:
Power Indicator:
Green LED
Audio Indicators:
Amber LED "Ok" for nominal input signal
High-Pass Filter:
level
Red LED "Hi" for excessive input signal level
Modulation Outputs:
Audio Level Control:
Rotary pot, screwdriver adjust, used
with audio indicator lights
Tape Output:
RCA jack, 600mV, 1200
½
source
impedance, 10K
½
nominal load
Power Connections:
impedance
Transmitter Type:
Infrared Test LED:
IR LED for receiver testing, monitoring,
and audio signal testing
Infrared Transmitter, Model TX3
Dimensions, Weight:
11.125" (28.3 cm) W x 8.125" (20.6 cm)
TX3 Front Panel:
H x 3.25" (8.3 cm) D, 3.25 lbs. (1.6 kg)
Power Indicator:
Color:
Black epoxy paint with white legends,
red acrylic window
Wall Mount:
Omnidirectional mount included for
TX3 Rear Panel:
wall and ceiling mounting.
Mounting Holes:
Tripod Mount:
Optional SS-2 Tripod Stand Kit available
Power:
External power supply, 24VAC, 50 or
60Hz, 50VA, 0.9A nom. current drain
Transmitter shuts off when modulation
Modulation Input:
signal is not present
Operating Req.:
0-50° C ambient temperature, non-
Modulation Output:
condensing, non-corrosive atmosphere
Coverage Area:
10,000 sq. ft. (930 sq. m), 50° cone
Power Connection:
pattern, see coverage diagram
95 kHz Carrier Cable:
Power Cable:
All three inputs are actively mixed into a
single signal, allowing use of mono,
stereo, or 3 channel audio sources
3-pin female XLR, accepts microphone,
line, 25V or 70V audio input
lo-Z, 100µV min. to 50mV max. 1mV
nominal, 3k
½
input impedance Supplies
simplex power 20V (DIN45296) for
condenser mics
21mV min. to 10V max., 212mV nominal,
100K
½
input impedance
216mV min. to 100V max., 2.16V
nominal, 100K
½
input impedance
(2) RCA, 21mV min. to 10V max., 212mV
nominal, 50K
½
input impedance
3-position slide-type switch, selects:
mic/line/70V on balanced audio input
3-position slide-type switch, 20Hz, 175Hz,
or 725Hz, 6dB/octave roll-off
(2) F-type connectors, 75
½
, 95kHz FM,
±15kHz deviation, 0.5V P-P signal uses
RG-59 cable, 1000 ft. (304 m) max.
CATV splitters cannot be used
2-conductor, screw-terminals
For use with Williams Sound WIR TX1, WIR
TX2, WIR TX3 Transmitter/Emitter panels.
Each MOD 1 Modulator can drive two
Transmitter panels directly. For multi-
transmitter systems, each TX3 repeats
the modulation signal to drive the next
transmitter in the chain.
Red LED, visible in center of window,
also indicates 95 kHz signal is present
Two sets of threaded holes for use with
omnidirectional mount (included) two
threaded holes on sides of the cabinet
for Tripod Stand Kit
F-type connector, 75
½
, 95kHz FM, 0.5V
P-P signal from MOD 1 Modulator
F-type connector, 75
½
, 95kHz FM, 0.5V
P-P signal output to additional TX3
2-conductor, screw-terminals
RG-59 Coax, F-connectors
NEC Class 2 wiring, 2-conductor, 18 ga.
min., 200 foot (61 m) max. length (for
18 ga. wire), each TX3 Transmitter
requires its own 24VAC Power Supply.
Williams Sound
®
Helping People Hear
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