Williams AV IR SY23 D – Dante Infrared System with Stethoset Receivers

Product Overview

The Williams AV IR SY23 D is a large-area Dante infrared assistive listening system that pairs the IR M1 D modulator with two IR E4 emitters, an IR A4 emitter array, and five IR RX20 stethoset receivers. The stethoset form factor is the defining choice here: under-chin receivers are easy to hand out, easy to sanitize, and familiar to patrons in theaters and worship venues. With a five-bay drop-in charger and ADA signage included, the system delivers a complete infrared hearing assistance package for commercial venues running Dante audio networks.

Product Description

The rack-mounted IR M1 D modulator anchors the system in a single rack unit. Program audio arrives over two Dante network channels or through two combination XLR/quarter-inch TRS inputs that accept balanced or unbalanced line-level or microphone signals with selectable phantom power. Onboard DSP provides selectable compression and high-pass/low-pass filtering to keep speech intelligible for listeners with hearing loss, while an embedded web page exposes every setting for remote configuration and diagnostics.

Two IR E4 emitters and the IR A4 array distribute the infrared signal. Each connects to the modulator over a single Cat5e cable that delivers +48 VDC power, RS-485 communication, and the baseband signal, so emitter locations need no local power. An IR E4 covers up to 18,000 square feet in single-channel mode, giving the two-emitter-plus-array complement comfortable headroom in auditoriums, council chambers, and performance spaces. Because infrared cannot penetrate walls, the audio stays inside the room and adjacent venues can reuse the same carrier frequencies.

The IR RX20 stethoset receivers weigh 1.6 ounces, run roughly 8 hours per charge on their internal LiPo batteries, and drop into the included CHG 520 five-bay charger between events, eliminating disposable battery management. A three-position switch selects 2.3 MHz, 2.8 MHz, or stereo operation, and a 3.5 mm jack accepts external earphones or neckloops when needed. The IDP 008 wall plaque completes the ADA compliance package. Explore the Williams AV collection at Creation Networks for spare receivers and accessories, or consider the bodypack-based IR SY21 D if four-channel receivers fit your program plan better.

Key Features

• Stethoset Receiver Package — Five IR RX20 under-chin receivers offer a patron-friendly form factor that venues can distribute quickly and clean easily between uses.
• Rechargeable Receiver Fleet — Internal LiPo batteries deliver about 8 hours per charge and recharge in the included CHG 520 five-bay drop-in charger, removing AA battery logistics.
• Dante Network Audio — The IR M1 D modulator subscribes to two Dante channels, integrating the assistive listening feed into the facility's existing audio network.
• Large-Area Emitter Set — Two IR E4 emitters plus the IR A4 array provide coverage scaled for auditoriums, with each emitter rated up to 18,000 square feet single-channel.
• One-Cable Emitter Installs — Cat5e home runs carry power, control, and signal to each emitter from the modulator's RJ-45 ports.
• DSP Speech Processing — Compression ratios of 1:1, 1.5:1, or 2:1 plus adjustable filtering tune the audio for hearing assistance rather than flat program reproduction.
• Contained, Interference-Free Signal — Infrared transmission stops at the walls, supporting privacy-sensitive venues and multi-room facilities.
• ADA Signage Included — The IDP 008 plaque documents assistive listening availability at the entrance.

Typical Applications

• Auditorium
• House of worship
• Government space
• Multi-purpose room
• Commercial meeting space

Technical Specifications

Frequently Asked Questions

What is the practical difference between stethoset and bodypack receivers?

Stethoset receivers like the IR RX20 are self-contained under-chin units with integrated earpieces, which simplifies handout and sanitizing at public venues. Bodypack receivers pair with separate headphones or neckloops and offer four-channel selection. The SY21 D and SY22 D are the bodypack equivalents of this system.

How are the receivers recharged?

All five IR RX20 receivers drop into the included CHG 520 five-bay charger. Each internal LiPo battery provides roughly 8 hours of operation per charge, covering a full day of services or performances.

Can the IR RX20 work with hearing aids?

The receiver includes a 3.5 mm stereo jack, so telecoil users can connect a compatible neckloop instead of using the stethoset earpieces. Neckloops are sold separately for ADA hearing-aid-compatible counts.

Does the system support two audio channels?

Yes. The IR M1 D modulates two channels, and the IR RX20 selects between 2.3 MHz, 2.8 MHz, or stereo. Note the RX20 operates on the 2.3/2.8 MHz pair, so configure the modulator's carrier set accordingly.

How is the system integrated with a Dante DSP?

Route two channels to the IR M1 D in Dante Controller from any Dante-enabled processor or console. The analog combo inputs remain available for non-networked sources.

What warranty coverage applies?

The modulator and emitters carry a 2-year Williams AV warranty, the IR RX20 receivers carry 5 years (90 days on the battery), and accessories are covered for 90 days.