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 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.
(1) MOD 232 modulator
(with TFP 016 110VAC/24VAC power supply)
(1) WIR TX9 WHT emitter (white)
(with TFP 010 U.S. power supply)
(1) BKT 024 wall/ceiling mount
(4) WIR RX22-4N 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
![]() | ![]() | ![]() |
We have no other products in this category.
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* |
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 (.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) or NiMH (BAT 026) |
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: | 60dB min. |
Squelch: | Receiver squelches (mutes) at 40 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 |
Dimensions, Weight: | 11.25” W x 6.25” H x 2.125” D (28.6 cm x 15.9 cm x 5.4 cm), 1.9 lbs (0.9 kg) |
Color: | White with Black legends, clear acrylic lens (Available in black) |
Power Supply: | Wall Transformer, 24 VAC, 50-60Hz, 35 VA, 3-pin MOLEX Connector |
North America: TFP 010, UL/CSA | |
Europe: TFP 027-01, 2-pin Schuko plug, CE | |
UK: TFP 027-02, 3-pin UK plug, CE | |
Note: Each WIR TX9 requires its own power supply | |
Power Cable: | NEC Class 2 wiring, two-conductor, 18 ga, 200’ (61m) max. length |
Indicators: | Green LED power indicator, red LED baseband indicator |
Carrier Frequency: | 50 kHz to 8 MHz |
Emitter IR Power: | 3.5 watts |
Coverage Area: | 28,000 sq. ft. (2600 sq. m) in single channel mode when using the RX22-4 Receiver 18,000 sq. ft (1700 sq. m) in two channel mode when using the RX22-4 Receiver 11,000 sq. ft (1000 sq. m) in four channel mode when using the RX22-4 Receiver 3,500 sq. ft (325 sq. m) in single channel mode when using the RX15-2 Receiver 3,063 sq. ft (285 sq. m) in single channel mode when using the RX18 Receiver (See coverage area diagrams) |
Baseband Input: | BNC, 100 mV per carrier, 50 Ω, for use with WIR TX9 or MOD 232 only |
Baseband Output: | BNC, 50 Ω, for use with TX9 only |
Baseband Cable: | RG 58 Coax, BNC connectors, maximum 1000’ (300m) length |
Operating Requirements: | 0-50º C ambient temperature, non-condensing, non-corrosive atmosphere |
Mounting Kits: | Wall or Ceiling Mount: BKT 024 Omnidirectional mount, Mic Stand Kit: SS-11 or SS-6 |
Warranty: | 5 years on emitter, 90 days on accessories |
Approvals: | CE, FCC, RoHS, WEEE |
Compatible Receivers: | WIR RX22-4 Four-Channel Receiver, RX18 Two-Channel Receiver |
WIR SYS 1 SoundPlus® Pro Courtroom System
All Williams Sound headphones and earphones are compatible with this product.
| Download/View | Name | Type | Language |
|---|---|---|---|
| WIR SYS 1 Specifications | Specifications | English | |
| SoundPlus™ 2 and 4 channel Infrared Listening Systems | Manual | English | |
| Mission Sensitive wireless listening technology-government applications | Brochure | English |