Hearing augmentation

Ir System Complete WIRSYS1 Williams AV

Product Code: WI-WIRSYS1

Williams AV
RRP $8,749.00
Unit of Measure


1 Year
Technical Specifications
Brands Williams AV
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Energy-efficient WIR TX9 DC emitter -- now featuring a DC power supply.

This two-channel IR courtroom system is the pro’s choice, offering a complete hearing assistance, language interpretation or private listening solution. Features four-channel, selectable, body-pack receivers (can be recharged when used with BAT 026-2 AA NiMH rechargeable batteries and CHG 3512 multi-bay charger—not included). This system ensures private and secure transmission to participants within the listening area. Power supplies, cables and rack mount included.

system includes
  • (1) MOD 232 modulator (with TFP 016 110VAC/24VAC power supply)
  • (1) WIR TX9 DC emitter (with TFP 053 U.S. DC power supply)
  • (1) BKT 024 wall/ceiling mount
  • (4) WIR RX22-4 receivers
  • (4) HED 021 headphones
  • (2) NKL 001 neckloops
  • (1) RPK 005 rack mount kit
  • (8) BAT 001 AA alkaline batteries
  • (1) IDP 008 ADA wall plaque
  • Now with improved range up to 30,000 sq ft
  • Elimination of wall-mount power supply
  • Fully compatible with previous generationsSupports additional emitter for additional coverage area


bkt 024
  • Base 1:2" (50.8 mm) round base with four 0.188" (4.8mm) holes on 1.6" (40.6mm) bolt circle for solid surface mounting
  • Base 2: T-Bar Clip for drop ceiling rails
  • Base Cover: Black Vinyl, covers either base
  • Shafts: Two 0.5" (12.7mm) diameter, 2" (50.8mm long aluminum, black. 1/4-20 stud with lock ring.
  • Head: 190° Tilt, 360° Turn & 360° Rotation
  • Finished Lengths: 2", 4" or 6"
  • Maximum Weight: 3 lbs (1.36 kg)
  • Shipping Weight: 0.3 lbs (166.5g)

hed 021
  • Style: Mono, folding headphone
  • Plug: 3.5mm mono
  • Cord: 39"
  • Driver Size: 30 mm
  • Nominal Impedance: 32Ω
  • Freq. Response: 20 - 20kHz
  • Weight: 52g
  • Max Power Input: 100 mW
  • Sensitivity: 110 dB @ 1kHz
  • Replacement Pads: HED 023 (one pair)

idp 008
  • 10-3/8" (L) x 6-¼" (W) x 1/8" (H)

mod 232 architectural and engineering specifications
  • The infrared system shall consist of separate modulator and emitter units, with portable receivers.
  • The modulator unit shall be a half-rack style, metal enclosure. A rack panel shall be available to mount one or two modulator units within a single EIA rack space. An adjustable floor stand and mounting bracket shall be available to mount the modulator and emitter together for portable operation.
  • The modulator shall provide two channels of selectable FM carrier signals, 2.3/2.8/3.3/3.8 MHz, so that a single modulator can be used to simultaneously transmit up to two channels, and two modulators can be ganged together to transmit up to four channels simultaneously.
  • The carrier signals shall use 50 kHz deviation and 50 µS pre-emphasis.
  • The carrier signals (baseband) shall be transmitted to one or more emitters by 50 ohm RG58 coaxial cable with BNC-type connectors. A BNC–type baseband input jack and baseband output jack shall be provided on the modulator.
  • The modulator shall be powered by an external 24 VAC, 10 VA, 50-60 Hz power supply, connected via a three-pin Molex power connector.It shall have a rocker-type power switch, power LED indicator, four carrier indicator LEDs and two bar graph-type LED audio indicators.
  • The modulator shall have a modulated IR LED on the front panel for testing purposes, and a headphone jack that accommodates mono and stereo 1/4" headphones, and channel monitoring switch.
  • The modulator shall have two rotary audio input level controls, and a screwdriver adjustable control for varying the input compression from 1:1 or 2:1.
  • The modulator shall have two timers that automatically shut off the carriers when there is no audio signal present for 15 minutes.
  • The modulator shall have two combination input jacks that accept 3-pin XLR plugs for balanced microphone input or 1/4" TRS plugs for balanced or unbalanced line-level inputs.
  • The XLR inputs shall be low impedance, accept signal levels from 100 µV to 90 mV and supply 15 V simplex power per DIN45596.
  • The TRS jacks shall accept balanced or unbalanced audio signal levels from 21 mV to 10 V.
  • The modulator shall have CE, FCC, RoHS, and WEEE approval and carry a five-year parts and labor warranty.
  • *The modulator shall be the Williams Sound model MOD 232.

mod 232
  • Size, Weight: 8.5" W x 8.2" D x 1.7" H (21.5 cm x 20.8 cm x 4.4 cm), 3.1 lbs (1.5 kg)
  • Color: Black epoxy paint with white legends
  • Rack Mount: 1/2 rack space wide, 1 rack space high, one or two modulators may be mounted in a single IEC rack space with RPK 005 (single) or RPK 006 (double) Rack Mount Kits
  • Power Supply:
    • Wall Transformer, 24 VAC, 50-60 Hz, 15VA
    • North America: TFP 016, UL/CSA
    • Europe: TFP 027-01, 2-pin Schuko plug, CE
    • UK: TFP 027-02, 3-pin UK plug, CE
  • Modulation: FM Wideband, +50 kHz deviation, 50 uS pre-emphasis
  • Carrier Frequency:
    • Channel A: Selectable, 2.3/2.8/3.3/3.8 MHz,
    • Channel B: Selectable, 2.3/2.8/3.3/3.8 MHz
  • Signal-to-Noise Ratio: More than 60dB
  • Frequency Response: 30 to 16,000 Hz, +1 dB, -3 dB, electrical response
  • Total Harmonic Distortion: Less than 2%, electrical response
  • Audio Processing:
    • Compression (slope) adjustable from 1:1 or 2:1
    • Switchable compression gain: Moderate: 16dB. Max: 33dB
  • Auto Carrier Shut-Off: 15-minute timer shuts off carrier when no audio is present (can be disabled)
  • Power Switch: Two-position push button, ON/OFF
  • Power Indicator: Green LED
  • Audio Level Controls: CHA and CHB Input Level, rotary knobs
  • Audio Indicators: CHA and CHB Audio Level, 10-segment LED’s
  • Carrier LEDs: 4 green LED carrier “on" indicators per channel (indicates frequency, malfunctions)
  • Compress Control: 1:1 or 2:1
  • Input Mix LED: Indicates inputs A and B audio are mixed and transmitted by CHA and CHB off
  • Stereo LED: Indicates stereo mode
  • Phones Switch: Selects CH1 or CH2 for phones when not in stereo mode
  • Phones Output: 1/4" TRS headphone jack. Accepts stereo, mono and any impedance phones.
  • Infrared Test LED: IR LED for receiver testing, monitoring and audio signal testing.
  • Power Input: 3-Pin Molex, 24 VAC, 50-60 Hz, 15 VA
  • Audio Input Jack: CHA and CHB combination XLR/TRS jack
  • Mic Level: Balanced, Lo-Z, 100 µV min. to 90 mV max., 1 mV nominal, 3kΩ input impedance, supplies switchable simplex power per DIN 45596 for condenser mics
  • Line Level: Balanced or unbalanced, 21 mV min. to 10V max., 212 mV nominal, 100 kΩ
  • Audio Line Output Jacks: RCA Jack, CHA and CHB, 500 mV, unbalanced, 100 Ω source impedance, load impedance must be greater than1 kΩ
  • Configuration Switches: CHA and CHB 8-position DIP switch, selects Mic/Line input, compressor gain, simplex power, discrete or mixed inputs, carrier frequency, channel disable, auto shut-off timer
  • Baseband Input Jack: BNC, allows mixing with additional MOD 232 Modulator (4CH operation), 100 mV, 50 Ω input impedance, use with MOD 232 or MOD 112 (111), BNC, RG-58 Cable
  • Baseband Output Jack: Two BNC jacks carry baseband signal, 100 mV/channel, 50 Ω source impedance, for use with WIR TX9 or MOD 232 only
  • Approvals: CE, FCC, RoHS, WEEE
  • Operating Requirements: 0-50º C ambient temperature, non-condensing, non-corrosive atmosphere
  • Warranty: 5 years on modulator*

wir rx22-4n architectural and engineering specifications

  • 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 receiver 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 five-year parts and labor warranty, excluding earphones, headphones, batteries and chargers.
  • The receiver shall be the Williams Sound model WIR RX22-4.

wir rx22-4n
  • Receiver Style: Body-Pack, dual-lens detector, lanyard
  • Size: 4.1" L x 2.85" W x 1.2" H (104.1 mm x 72.4 mm x 30.4 mm)
  • Weight: 4.5 oz (127 g) with batteries
  • Color and Material: Black
  • Lanyard: 3 ft (0.91 m), allows receiver to be worn around the neck
  • Operating Temperature: -10° C to +50° C
  • Battery Type: 2 x AA, alkaline (BAT 001-2) or NiMH (BAT 026-2)
  • Battery Life: Alkaline: 60 hours, NiMH: 30 hours/charge
  • Battery Drain: 25 mA, nominal
  • 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 Ω
  • 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
  • Warranty: 5 years on receiver, 90 days on accessories
  • Compatible Headphones/Earphones: Mono or stereo, 8-32 ohms, 3.5 mm mini phone plug, HED 021, HED 026, EAR 013, EAR 014, EAR 022, NKL 001

wir tx9 dc architectural and engineering specifications
  • The emitter shall be contained in a metal enclosure with a shatter-resistant lens.
  • The emitter shall include an omni-directional mounting bracket for permanent installation and a bracket shall be available for mounting on a floor stand for portable installations.
  • Each emitter shall be powered by a universal power supply with an output of 24 VDC, 1.0 A, 25 W.
  • The power connector shall be a barrel style.
  • The emitter shall have a BNC-type 50 ohm baseband input and 2 BNC-type baseband 50 ohm output jack.
  • The emitter shall have a repeater circuit to allow multiple numbers of emitters to operate from the baseband signal.
  • The emitter shall have a visible LED indicator for power and for baseband signal. Carrier frequency is 2.3 MHz to 3.8 MHz.
  • The emitter shall shut off when the baseband signal is not present.
  • The emitter shall provide an effective coverage area of up to 30,000 sq ft (2,787 sq m) in single-channel mode and up to 19,000 sq. ft. (1,765 sq. m.) in two-channel mode when using the RX22-4, or RX18 receivers.
  • The emitter shall be convection-cooled, without fans.
  • The emitter shall have CE, FCC, RoHS, and WEEE approval and carry a five-year warranty on parts and labor.
  • The emitter shall be Williams Sound model WIR TX9 DC.

wir tx9 dc
  • Dimensions, Weight: 11.25” W x 6.25” H x 2.125” D (28.6 cm x 15.9 cm x 5.4 cm), 1.8 lbs (0.8 kg)
  • Color: Black with white legends, black acrylic lens (optional white enclosure available)
  • Power Supply:
    • Desktop-style, universal power supply.
    • Input: 100-240 VAC, 50/60 Hz, 0.6A. Line cord specified by country of use.
    • Output: 24 VDC, 1.0 A, 25W. Barrel connector.
    • 50 ft DC power supply extension cable available (WCA 123).
  • Carrier Frequency: Accomodates baseband sub carriers from 2.3-3.8 MHz
  • Emitter IR Power: 3.5 watts
  • Coverage Area:
    • 30,000 sq. ft. (2,787 sq. m) in single channel mode when using the RX22-4 Receiver
    • 19,000 sq. ft (1,765 sq. m) in two channel mode when using the RX22-4 Receiver
    • 11,000 sq. ft (1,022 sq. m) in four channel mode when using the RX22-4 Receiver
    • 3,350 sq. ft (311 sq. m) in single channel mode when using the RX18 Receiver
  • Baseband Indicator: Red LED
  • Power Indicator: Red LED
  • Auto Carrier Shut-Off: Turns off LEDs when no baseband is present
  • Power Input: 24 VDC, 0.8 A
  • Baseband Input: BNC, 50 Ω, for use with MOD 232, TX 90, TX 90 DC, TX 9 and TX 9 DC
  • Baseband Output: BNC, 50 Ω, for use with TX 9 or TX 9 DC only
  • Baseband Cable: RG 58 Coax, BNC Connectors, maximum 1000 ft (300 m) length.
  • Operating Requirements: 32-122 °F (0-50 °C), ambient temperature, non-condensing, non-corrosive atmosphere
  • Mounting Kits:
    • Wall or Ceiling Mount: BKT 024 Omnidirectional mount;
    • Optional: Tripod Stands: SS-11 or SS-6
  • Warranty: 5 years on transmitter (90 days on accessories)
  • Approvals: CE, FCC, RoHS, WEEE
  • Compatible Receivers:
  • WIR RX22-4 Four-Channel Receiver
  • WIR RX18 Two-Channel Receiver
  • Notes: Specifications:  Single end input, volume & tone controls at mid point, 1 kHz, “Music” Preset

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