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Williams AV WIR SYS 90 ADV SoundPlus 2-Ch IR Assistive Listening System for Large Areas

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The WIR SYS 90 ADV from Williams AV is a SoundPlus® 2-channel Infrared (IR) Assistive Listening System consists of (1) WIR TX90 IR transmitter, (5) RX18 receivers, (1) CHG 518 5-bay charger, plus (1) IDP 008 ADA wall plaque.

  • WIR TX-90 DC - A 2-channel IR transmitter that combines both modulator and emitter technology into a single operating unit, reducing operating cost and opening up additional precious rack space. It produces a wide-angle infrared signal that concentrates the IR energy efficiently into the listening area. It operates on the 2.3-3.8 MHz frequency band, making it less susceptible to radio and lighting interference. These units cover up to 28,000ft² (2,600m²) in single-channel operation.
  • WIR RX18 - A 2-channel IR receiver designed for use with a transmitter operating on 2.3, MHz, 2.8 MHz or stereo. This easy-to-operate, stethoscope-style receiver is ideal for listening applications where optimal sound quality is vital. An on/off control is built into the arms of the unit, saving on battery life.
  • CHG 518 - This multi-unit, drop-in style charger will conveniently charge and store up to 5 Williams AV WIR RX18 under-the-chin style receivers, helping keep your products organized and batteries consistently charged.

Please note: further information can be found within the items located under the "Documentation" tab above.


Ideal for: Hearing assistance • Language interpretation • Audio description

WIR SYS 90 ADV System Includes

  • (1) WIR TX90 DC IR transmitter
  • (5) RX18 receivers
  • (1) CHG 518 5-bay charger
  • (1) IDP 008 ADA wall plaque


  • Modulator/emitter combined into single operating unit
  • Resistant to high-efficiency lighting interference
  • Transmitter also available in white (WIR SYS 90 ADV WHT - sold separately)
  • Meets ADA Guidelines
  • Made in the USA


  • Note: specifications and further information can be found within the items located under the "Documentation" tab above.

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