Williams Sound SoundPlus T3 Portable Infrared Courtroom System

SKU: WSIRSYS3100 MFR: IR SYS31-00
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Key Features

  • Crystal-clear courtroom audio: Enjoy superior sound quality with this infrared system.
  • Ensure ADA compliance: This assistive listening system meets accessibility requirements.
  • Portable & complete: Includes transmitter, receivers, mics, & accessories for easy setup.
  • Secure infrared technology: Prevents eavesdropping, ideal for confidential discussions.
  • Versatile audio solution: Perfect for courtrooms, conferences, and sensitive meetings.
  • Long-lasting battery life: Alkaline batteries provide up to 60 hours of reliable use.
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Williams Sound IR SYS31 Specifications

IR T3 Infrared Transmitter

IR T3 Infrared Transmitter

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  • Color

    Black

  • Compatible Receivers

    WIR RX22-4, IR RX20

  • 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

    2.1mm 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 microS pre-emphasis

  • Baseband Frequencies

    2.3, 2.8, 3.3, 3.8 MHz

  • Coverage Area

    Up to 32000 sq. ft (2972 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

    3.5mm, 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 Degree F to 122 Degree F (0 Degree C to 50 Degree C)

  • Mounting

    Wall or Ceiling mount: BKT 024 Omnidirectional mount

  • Approvals/Regulatory Compliance

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

  • Dimensions

    9 x 3.8 x 1.4" (229 x 97 x 36mm)

  • Weight

    13.44 oz (380g)

WIR RX22-4 Receiver

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  • Color

    Black

  • Compatibility

    Headphones/ or stereo, 8-32 ohms, 3.5 mm mini phone plug, HED 021, HED 026, EAR 013, EAR 014, EAR 022, NKL 001

  • Receiver Style

    Body-Pack, dual-lens detector, lanyard

  • Lanyard

    3' (0.91m), allows receiver to be worn around the neck

  • Operating Temperature

    14 Degree F to 122 Degree F (-10 Degree C to 50 Degree C)

  • Charging Contacts

    For use only with CHG 3512

  • Carrier Frequency

    Channel 1: 2.3 MHz
    Channel 2: 2.8 MHz
    Channel 3: 3.3 MHz
    Channel 4: 3.8 MHz

  • De-Emphasis

    50 uS

  • FM Deviation

    +/-50 kHz

  • Signal-to-Noise Ratio

    60 dB min.

  • Squelch

    Receiver squelches (mutes) at 28 dB S/N ratio

  • Frequency Response

    25 Hz to 16 KHz, +1 dB, -3 dB, electrical response

  • Total Harmonic Distortion

    Less than 1%, electrical response

  • Controls

    ON/OFF/VOLUME: combination thumbwheel knob
    Channel Selector four-position rotary switch

  • Indicators

    Red LED "ON" indicator, flashes to indicate Low battery

  • Audio Output Jacks

    3.5 mm stereo mini phone jack Accepts 3.5 mm mono or stereo phone plug

  • Audio Output Power

    15 mW max at 32 Ohm

  • Acoustic Output

    125 dB SSPL90 with HED 021; 110 dB SSPL90 w/ EAR 013

  • Sensitivity

    Better than 1 nW/cm2 for 40 dB signal-to-noise ratio

  • Approvals

    CE, FCC, RoHS, WEEE

  • Battery

    2x AA, alkaline (BAT 001-2) or NiMH (BAT 026-2)

  • Battery Life

    Alkaline: 60 hours
    NiMH: 30 hours/charge

  • Battery Drain

    25 mA, nominal

  • Battery Info

    Required, included

  • Battery Material

    Alkaline

  • Battery Type

    AA

  • Battery Quantity

    4

  • Dimensions (L x W x H)

    4.1 x 2.85 x 1.2" (104.1 x 72.4 x 30.4mm)

  • Weight

    4.5 oz (127 g) (with batteries)

MIC 149 Conference Microphone

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  • Color

    Black

  • Type

    Electret Condenser

  • Plug

    3.5mm mono

  • Cord

    39" (99cm)

  • Output Impedance

    1500 Ohm

  • Polar Pattern

    Omnidirectional

  • Bias Power Requirement

    1.0-10VDC

  • Sensitivity

    -40 dB +/- 3 dB

  • Dimensions (Dia. x H)

    2.36 x 0.63" (60 x 16mm)

EAR 022 Surround Earphone

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  • Style

    Around-ear speaker

  • Plug

    3.5mm mono

  • Cord

    39" (99cm)

  • Driver Size

    23mm

  • Nominal Impedance

    32 Ohm

  • Freq. Response

    20 - 20kHz

  • Max Power Input

    30 mW

  • Sensitivity

    118 dB @ 1kHz

  • Weight

    0.52 oz (15g)

NKL 001 Neckloop

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  • Color

    Black

  • Cord Length

    18.5" (47cm)

  • Connector

    NKL 001: 3.5mm mono plug
    NKL 001-S: 3.5mm stereo plug with ring disconnected

  • Impedance

    8-16 Ohms

  • Input Power

    500 mW max

  • Magnetic Field Strength

    25 mW input at 1000 Hz produces 1.7 A/m 6" above the center of loop
    85microW input produces 0.1 A/m (IEC Standard)

  • Approvals

    RoHS, WEEE

  • Weight

    1.5 oz (42.52g)

About Williams Sound 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..

- SoundPlus T3 Medium-Area Infrared Transmitter -
The SoundPlus T3 continues Williams AV's legacy of audio innovation. Featuring cutting-edge LED technology, it delivers a stronger, more consistent audio signal over a wider range than previous models, ensuring comprehensive coverage and minimizing dropouts.

The new LEDs offer increased power and efficiency, providing complete coverage of up to 32,000 sq. ft (2,972 sq. m), overcoming background noise, reverberations, and distance from the sound source. With its expanded coverage pattern and more robust audio signal, there's no need for the additional cost of a secondary unit.

Engineered for AV professionals, the T3 offers a two-channel infrared transmitter with an integrated modulator and emitter. It operates on switchable carrier frequencies and includes optional Power-over-Ethernet (PoE) capability, allowing remote power delivery up to 100 feet, and remote RS-232 commands provide convenient control.

The T3's compact form factor allows for discreet placement, ensuring it integrates seamlessly into any room's aesthetics. It accommodates adjacent rooms without signal spillover, maintaining clear, high-quality audio within a single space. Ideal for environments requiring privacy or confidentiality, such as corporate boardrooms or spaces with sensitive information.


- Four-Channel Infrared Receiver -
This infrared receiver, offering four-channel selection, is fully compatible with transmitters operating within the 2.3/2.8/3.3/3.8 MHz bandwidth. Enhanced by dual infrared detectors, it optimizes sensitivity and extends operational range. When utilized with a Williams AV Infrared Transmitter. it covers up to 30,000 square feet (2,800 square meters) in single-channel mode. Its sleek, body-pack design features convenient channel selector and easy-to-use on/off volume control.

The RX22-4N can be used with mono or stereo headphones, earphones or a neckloop.

- Surround Earphone -
Experience a secure fit with the Surround Earphone, designed to hang on the outside of the ear. Enjoy excellent sound quality with a 32 Ohm mono configuration. Ideal for mild hearing loss and low gain. Weighing just 0.04 lbs, this lightweight earphone ensures a comfortable and high-quality audio experience.

Features:
• Hangs on outside of the ear
• Excellent sound quality
• 3.5mm mono plug
• 1m cord
• Monoaural
• 32 ohm
• Recommended for FM receivers and select IR receivers
• Designed for individuals with mild and low gain hearing loss


- 18" Mono Neckloop -
This mono neckloop is designed to be worn around the neck, allowing an audio signal from a hearing loop to be transmitted directly to a user's hearing aid or cochlear implant equipped with a T-coil switch. It features a mono plug. For a stereo plug, see the NKL 001-S. 3.5 mm plug, mono, 8 - 16 Ohm. This neckloop is for users with moderate to severe hearing loss.

Safety Breakaway Feature
Integrated safety breakaway device. In the event the neckloop cord becomes entangled with an object in motion, the breakaway device will disconnect the neckloop from the user.

Features
• Integrated safety breakaway device
• 18" Cord
• Adult size
• 3.5mm plug
• monoaural
• 8-16 ohm
• Recommended for PockeTalkers, WF R1 receiver
• For individuals with moderate to severe hearing loss


- ADA Wall Plaque -
Let your customers know that an ADA-compliant hearing assistance system is available to them with a Hearing Assistance Available sign.

Elevate visitor awareness of your hearing assistance offerings through the ADA Wall Plaque. Designed for your convenience, the included adhesive and stand offer versatile mounting choices. You can effortlessly hang it on a wall or window using the provided adhesive or use the provided stand to display it on a service counter or desk, ensuring clear communication of your ADA-compliant hearing assistance options available.

Williams Sound IR SYS31 Features

  • Portable infrared system covers up to 32000 sq. ft (2972 sq. m) for easy assistive listening
  • SoundPlus T3 transmitter offers wider coverage with advanced LED technology
  • Compact design allows discreet placement and seamless integration into rooms
  • Two-channel infrared transmitter supports switchable frequencies and PoE capability
  • Four-channel receiver provides flexible, extended coverage up to 30000 sq. ft (2787 sq. m)
  • Lightweight Surround Earphone ensures comfortable, high-quality sound for mild hearing loss
  • Mono Neckloop transmits audio directly to hearing aids with T-coil, ideal for moderate to severe loss
  • Safety breakaway feature on neckloop prevents accidents if cords get tangled
  • ADA wall plaque clearly indicates hearing assistance is available for accessibility
  • Easy transport with carry case makes this system perfect for courts and conference rooms

Warranty Information

This product has a limited warranty of 24 months.

Product Documents

User Manual

Key Features

  • Crystal-clear courtroom audio: Enjoy superior sound quality with this infrared system.
  • Ensure ADA compliance: This assistive listening system meets accessibility requirements.
  • Portable & complete: Includes transmitter, receivers, mics, & accessories for easy setup.
  • Secure infrared technology: Prevents eavesdropping, ideal for confidential discussions.
  • Versatile audio solution: Perfect for courtrooms, conferences, and sensitive meetings.
  • Long-lasting battery life: Alkaline batteries provide up to 60 hours of reliable use.

What's in the box:

  • IR T3 Medium-Area Infrared Transmitter
  • 2x WIR RX22-4 Four-Channel Infrared Receivers
  • MIC 149 Omnidirectional Conference Microphone
  • 2x EAR 022 Surround Earphones
  • 2x NKL 001 18" Mono Neckloops
  • 2x BAT 001-2 AA Alkaline Batteries (Set of 2)
  • IDP 008 ADA Wall Plaque
  • CCS 029 Carry Case
  • STD 007 Tabletop Tripod
  • TFP 061 Power Supply
  • WCA 135 WC 12' Mono Cable
  • Williams Sound 2 Year Limited Warranty