SoundPlus® T3 Portable Infrared Courtroom System

IR SYS31

This portable infrared audio system is designed for assistive listening and language interpretation in courtrooms, featuring the SoundPlus® T3 infrared transmitter.

Easily moved between rooms, the system includes a carry case for convenient transport with coverage of up to 32,000 sq ft (2,972 sq m). The table-top tripod securely mounts the T3 transmitter, providing a stable setup, while the omnidirectional conference microphone ensures clear audio capture throughout the room. Handheld receivers pick up the infrared signal, delivering audio through lightweight surround earphones or a mono neckloop, which transmits directly to T-coil hearing aids or cochlear implants.

System Includes

(1) IR T3 Medium-area Infrared Transmitter
(2) WIR RX22-4 Four-channel Infrared Receivers
(1) MIC 149 Omnidirectional Conference Microphone
(2) EAR 022 Surround Earphones
(2) NKL 001 18″ Mono Neckloops
(2) BAT 001-2 AA Alkaline Batteries
(1) IDP 008 ADA Wall Plaque
(1) CCS 029 Carry Case
(1) STD 007 Table-top Tripod
(1) TFP 061 Power Supply
(1) WCA 135 WC 12-foot Mono Cable

IR T3 architectural and engineering specifications

Architectural/Consultant Specs The Infrared Transmitter shall consist of an all-in-one modulator and emitter operating on 2.3 MHz and/or 2.8 MHz (or 3.3 and/or 3.8 MHz). The carrier frequency shall use 50 kHz deviation and 50 µS pre-emphasis. The transmitter will operate in 2-channel mode on 2.3 and 2.8 or on 3.3 and 3.8 MHz. The transmitter will operate in single-channel mode on 2.3, 2.8, 3.3, or 3.8 MHz. The transmitter shall have coverage up to 32,000 ft2 (2,972 m2) with the WIR RX22-4 infrared receiver in single-channel mode or 19,000 ft2. (1,765 m2) with the RX20 infrared receiver in single-channel mode. The transmitter shall be housed in a heavy-duty black plastic enclosure with a metal plate base and a durable infrared transparent front lens. It shall be convection-cooled without fans and have a sleep/power save mode that shuts off the IR when no audio is present for 12 minutes.The Transmitter shall have a signal-to-noise ratio of 70 dB or better and have an audio frequency response of 95 Hz to 17.6Hz, -3 dB re 1 kHz (line inputs), and 125 Hz to 17.0 kHz, -3 dB re 1 kHz (microphone input). The Transmitter includes an omnidirectional mounting bracket for various permanent installations. Each channel shall have a line-level Phoenix-style connector input, and each channel shall have an audio input-level LED.There shall be a single 3.5 mm microphone input with gain control, and the mic input shall have a channel selector switch. The transmitter shall have a switch to turn off all indicator LEDs if pressed and held and change the carrier frequency set if pressed and held. The transmitter shall be powered by a 48 VDC universal power supply, 50-60 Hz, 100-240 VAC input, 18 W with optional Power over Ethernet (PoE) support. The transmitter shall have RS-232 monitoring and control available for third-party controllers.The transmitter shall be covered by a two-year parts and labor warranty and 90 days on accessories. The Williams AV SoundPlus T3® infrared transmitter is specified.

IR T3

Dimensions:

9.0" W (229 mm) x 3.8" D (97 mm) x 1.4" H (36 mm)

Weight:

0.84 lb. (0.38 kg)

Color:

Black

Power Supply:

TFP 057 Desktop style international certified power supply with IEC line cord, 100-240 VAC input, 50-60 Hz, 18 W; 48 VDC output

DC Power Input:

2.1 mm ID barrel connector, 48 VDC, 0.2A, center positive

Power Indicator:

Green LED

Sleep/Power Save Mode:

Shuts off IR when no audio present for 12 minutes

Modulation:

FM Wideband, ±50 kHz deviation max, 50 μS pre-emphasis

Baseband Frequencies:

2.3, 2.8, 3.3, 3.8 MHz

Coverage Area:

Up to 32,000 sq. ft (2,972 sq. m) in single-channel mode with the RX22-4 receiver Up to 19,000 sq. ft (1,774 sq. m) with the RX20 stethoset receiver

Microphone gain adjust: Rotary 10 dB range
Microphone channel switch: Selects microphone input to Ch. A or Ch. B
Microphone input: 3.5 mm, stereo jack with signal and bias connected to tip, electret microphone compatible (6 VDC bias supply with 2.7 k ohm series resistor)

Audio Inputs:

Line inputs: Phoenix style connector jack for Ch A and Ch B accept line level, balanced or unbalanced audio

Audio Indicators:

One yellow LED per channel. Lights up and stay on steady with minimum audio level.

Signal-to-Noise Ratio:

70 dB (line input)

Frequency Response:

95 Hz to 17.6 kHz, -3 dB re 1 kHz (line inputs) 125 Hz to 17.0 KHz, -3 dB re 1 kHz (microphone input)

Operating Requirements:

32°-122°F (0-50°C)

Mounting Kit:

Wall or Ceiling mount: BKT 024 Omnidirectional mount

Compatible Receivers:

WIR RX22-4, IR RX20

Warranty:

2-year warranty against component failure and manufacturing defects. See Full Warranty statement on the website for details.

Approvals/Regulatory Compliance:

CE, FCC, Industry Canada, WEEE, RoHS, CB Scheme, RCM, PSE

 

Warranty

2 Years

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Infrared audio is ideal for assistive listening for ADA/Disability compliance, language interpretation, and audio description in environments requiring privacy and confidentiality or where audio signals must remain in a space without spillover to adjacent spaces. Frequently used in:

  • Medical centers and treatment rooms
  • Courtrooms, jury deliberation rooms, and city council chambers
  • Classrooms and lecture halls
  • Auditoriums and theaters
  • Conference rooms, corporate boardrooms, and training centers

Design & Consultant Specs